iso 12488-12005-character

Reference numberISO 12488-1:2005(E)

ISO 2005

INTERNATIONAL STANDARD

ISO12488-1

First edition2005-04-15

Cranes Tolerances for wheels and travel and traversing tracks Part 1: General

Appareils de levage charge suspendue Tolrances des roues et des voies de roulement et de dplacement

Partie 1: Gnralits

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ISO 12488-1:2005(E)

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ii ISO 2005 All rights reserved


ISO 12488-1:2005(E)

ISO 2005 All rights reserved iii

Contents Page

Foreword............................................................................................................................................................ iv Introduction ........................................................................................................................................................ v 1 Scope...................................................................................................................................................... 1 2 Normative references ........................................................................................................................... 1 3 Terms and definitions........................................................................................................................... 1 4 Symbols ................................................................................................................................................. 2 5 Classification of tolerances ................................................................................................................. 3 6 Tolerances ............................................................................................................................................. 4 Bibliography ..................................................................................................................................................... 21


ISO 12488-1:2005(E)

iv ISO 2005 All rights reserved

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 12488-1 was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 8, Jib cranes.

This first edition cancels and replaces ISO 8306:1985, of which it constitutes a technical revision.

ISO 12488 consists of the following parts, under the general title Cranes Tolerances for wheels and travel and traversing tracks:

Part 1: General Part 4: Jib cranes


ISO 12488-1:2005(E)

ISO 2005 All rights reserved v

Introduction

This part of ISO 12488 establishes requirements and gives guidance and design rules that reflect the present state of art in the field of crane machine design. The rules given represent good design practice that ensures fulfilment of essential safety requirements and adequate service life of components. Deviation from these rules normally leads to increased risks or reduction of service life, but it is acknowledged that new technical innovations, materials etc. may enable new solutions that result in equal or improved safety and durability.


INTERNATIONAL STANDARD ISO 12488-1:2005(E)

ISO 2005 All rights reserved 1

Cranes Tolerances for wheels and travel and traversing tracks

Part 1: General

1 Scope

This part of ISO 12488 specifies tolerances for construction assemblies and operational conditions of cranes and associated crane tracks as defined in ISO 4306-1. The purpose of the requirements in this part of ISO 12488 is to promote safe operation and achievement of the expected life of components by the elimination of excessive load effects due to deviations or misalignments from the normal dimensions of the structure.

Tolerances given are extreme values. The elastic deformations due to load effects are outside the scope of this part of ISO 12488. These will need to be taken into account at the design stage using other criteria to achieve the intended operation and performance.

Specific values for particular crane types are given in other parts of ISO 12488.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 286-2:1988, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts

ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out

ISO 4306-1, Cranes Vocabulary Part 1: General

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1 construction tolerance amount by which a specific dimension is permitted to vary, resulting from the assembly of the complete crane and its tracks, in new, modified, rebuilt or repaired buildings, before operational use

NOTE 1 This applies to new build or repaired or modified cranes and tracks.

NOTE 2 The amount is given either by the absolute value of the difference between the limits of size, or by the allowable geometric variation.


ISO 12488-1:2005(E)

2 ISO 2005 All rights reserved

3.2 operational tolerance amount by which a specific dimension is permitted to vary, resulting from the use of the crane and its tracks

NOTE The amount is given either by the absolute value of the difference between the limits of size, or by the allowable geometric variation.

4 Symbols

A Tolerance of the span, related to the rail centre of travelling or traversing tracks, at each point of the track or to the wheel centre of crabs or cranes

B Tolerance of the horizontal straightness, in ground plan, at each point of the travelling track

b Tolerance of horizontal straightness related to a test length of 2 metres in ground plan, (sample value) at each point of the rail head

C Tolerance of straightness related to the height of the crane rail centre at each point of the travelling track

c Tolerance of straightness related to a test length of 2 metres (sample value) at each point of height of the crane rail

A Centre-to-centre distance between the horizontal guide rollers, in longitudinal direction of rail

E Centre-to-centre distance between two wheels or bogeys, in longitudinal direction of rail

hF Distance between the top edge of a rail and the bottom edge of horizontal guide rollers

S Span from centre to centre of the rail

0/00 Angle of inclination expressed as vertical points per horizontal thousand

D Wheel diameter

E Height tolerance related to opposite measuring points at right angles to each point of the track

Fmax Parallelism tolerance of end stops or buffers G Angularity tolerance related to rail cross-section with plane surface

HF Vertical offset of a welded connection

HS Horizontal offset of a rail head

K Parallelism tolerance of a rail with reference to the web

D Allowable difference in diameter of the coupled wheels of a coupled drive e Tolerance of the base of a wheel in ground plan F Alignment tolerance of guide rollers in ground plan hr Height tolerance of the points of wheel contact N Tolerance of parallel offset of the wheels in ground plan F Axle tolerance of parallelism of guide rollers across the track


ISO 12488-1:2005(E)


F Axle tolerance of parallelism of guide rollers across the track k Axle tolerance of parallelism in a ground plan of the hole (inclination of axis) r Axle tolerance of parallelism in a ground plan of the wheel (inclination of wheel) k Axle tolerance parallelism in elevation of the hole (axle camber) r Axle tolerance of parallelism in elevation of the wheel (wheel camber)

These symbols and their meanings are applicable to all parts of ISO 12488.

Where symbols for construction tolerances are also applicable to operational tolerances (e.g. in operator instructions), the suffix w is used (e.g. Aw, Bw, Cw, Ew).

Where necessary, an additional suffix may be added, for example,

Aw1 operational tolerance for travelling tracks,

Aw2 operational tolerances for traversing tracks,

Aw3 operational tolerances for cranes,

Aw4 operational tolerances for crabs.

5 Classification of tolerances

The main criteria for determining the class of tolerance is the total amount of travel throughout the life of the crane; however, system sensitivity shall be considered along with the class of tolerance as given in other parts of ISO 12488.

NOTE In the context of this part of ISO 12488, system sensitivity is considered to be the amount of reaction of the system in terms of load effect resulting from the tolerance considered as unintentional displacement (see ISO 8686-1:1989, 6.1.5). In the case of highly sensitive systems, it could be appropriate to select a higher tolerance class than that shown in Table 1.

Table 1 Tolerance classes

Tolerance class Limits of travelling and traversing distance km

1 50 000 u L

2 10 000 u L < 50 000 3 L < 10 000, for stationary erected tracks 4 Temporarily erected tracks for building and erection purposes

NOTE L is calculated as the product of the normal travel speed and the specified working time of the relevant travel/traverse mechanism, either by application of customer specified values or through reference to the classification of the mechanism.


ISO 12488-1:2005(E)


6 Tolerances

6.1 General

The tolerances for the various classes and parameters shall be as given in Tables 2, 3, 4, 5, 6 and 7.

6.2 Thermal effects

The tolerances given in Tables 2, 3, 4, 5, 6 and 7 shall be used for an ambient temperature of 20 C. Where the average ambient temperature for the operational position of the crane differs from 20 C, the tolerances shall be adjusted accordingly.

6.3 Application of vertical out-of-plane tolerance

The tolerance hr given in Tables 4 and 5 for the vertical out-of-plane displacement of a corner of rail wheel of a crane or crane crab, and the corresponding tolerances for tracks given in Tables 2 and 3 are valid for rigid structures travelling or traversing on the rails, i.e. for box beam structures of main girders, crabs or portals. For frames built from open sections, the tolerances used may be one or two classes lower.

6.4 Construction tolerances

6.4.1 General

The measurements shall be taken in the unloaded condition with the crane and its associated tracks supported in the manner in which they will be operated. Tables 2 to 6 show the appropriate tolerances.

If technical documentation requires a means for differentiation of the tolerances, a suffix shall be added to the tolerance symbol, corresponding to the relevant table in this part of ISO 12488.

EXAMPLE A2 is the construction tolerances for travelling tracks as per Table 2.

6.4.2 Rail joints

Construction tolerances shall be in accordance with Table 6.

6.5 Operational tolerances

The operational tolerances given in Table 7 shall be measured with the crane in the unloaded condition.

NOTE Tolerances in excess of those shown in Table 7 can result in unacceptable ride characteristics and additional stresses, leading to increased wear on rails, wheels, guide rollers etc., and possible damage to the supporting structure. If any measurements are beyond the tolerances in Table 7, then investigations should be undertaken by a competent engineer and the appropriate action taken.


ISO 12488-1:2005(E)


Tabl

e 2

C

onst

ruct

ion

tole

ranc

es fo

r tra

velli

ng tr

acks

of t

oler

ance

cla

sses

1 to

4

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect o

f th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

A To

lera

nce

of s

pan

S of

the

cran

e ra

ils re

late

d to

rail

cent

re a

t eac

h po

int o

f tra

velli

ng tr

ack

+ A

= S m

ax S

A =

Sm

in S

3

Val

id fo

r all

span

s S u

16

m

[3+

0,25

(S1

6)]

10

max

.

Val

id fo

r spa

ns

S > 1

6 m

, S in

m

etre

s

5

Val

id fo

r all

span

s S u

16

m

[5+

0,25

(S1

6)]

15

max

.

Val

id fo

r spa

ns

S > 1

6 m

, S in

m

etre

s

8

Val

id fo

r all

span

s S u

16

m

[8+

0,25

(S1

6)]

20

max

.

Val

id fo

r spa

ns

S > 1

6 m

, S in

m

etre

s

12,

5

Val

id fo

r all

span

s S u

16

m

[8+

0,25

(S1

6)]

25

max

.

Val

id fo

r spa

ns

S > 1

6 m

, S in

m

etre

s

B To

lera

nce

of h

oriz

onta

l st

raig

htne

ss o

f rai

l hea

d at

eac

h po

int o

f tra

velli

ng tr

ack

5

10

20

40

b To

lera

nce

of h

oriz

onta

l st

raig

htne

ss re

late

d to

test

le

ngth

of 2

000

mm

(sam

ple

valu

e) a

t eac

h po

int o

f rai

l hea

d

Pos

ition

of c

rane

rail

in g

roun

d pl

an

1 1

2 4

C

Tole

ranc

e of

stra

ight

ness

re

late

d to

hei

ght o

f cra

ne ra

il ce

ntre

at e

ach

poin

t of t

rave

lling

tra

ck

5

10

20

40

c To

lera

nce

of s

traig

htne

ss

rela

ted

to te

st le

ngth

of

2 00

0 m

m (s

ampl

e va

lue)

at

each

poi

nt o

f hei

ght o

f cra

ne ra

il

Hei

ght o

f cra

ne ra

il (a

xial

slo

pe)

1 2

4 8

mm


ISO 12488-1:2005(E)


Tabl

e 2

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect o

f th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

E To

lera

nce

of h

eigh

t rel

ated

to

oppo

site

mea

surin

g po

ints

at

right

ang

les

at e

ach

poin

t of

trave

lling

trac

k

Hei

ght o

f tra

velli

ng tr

ack

(late

ral s

lope

)

0,5

S

S in

met

res,

E u

Em

ax

5 m

ax.

S

S in

met

res,

E u

Em

ax

10

max

.

2 S

S in

met

res,

E u

Em

ax

20

max

.

4 S

S in

met

res,

E u

Em

ax

40

max

.

Fm

ax

Tole

ranc

e of

par

alle

lism

of e

nd

stop

s or

buf

fers

on

trave

lling

track

at r

ight

ang

les

to

long

itudi

nal a

xis

with

par

alle

lism

sy

mbo

l //

Pos

ition

in a

gro

und

plan

(da

tum

sym

bol i

n ac

cord

ance

with

IS

O 1

101)

0,8

S

8 m

ax.

S in

met

res,

e.

g. fo

r S

20

m =

Fm

ax

S

10

max

.

S in

met

res,

e.

g. fo

r S

20

m =

Fm

ax

1,2

5 S

12,

5 m

ax.

S in

met

res,

e.

g. fo

r S

20

m =

Fm

ax

1,6

S

16

max

.

S in

met

res,

e.

g. fo

r S

20

m =

Fm

ax

mm

G

(See

Ta

ble

3)

Tole

ranc

e of

ang

ular

ity re

late

d to

cr

ane

rail

cros

s-se

ctio

n at

eac

h po

int o

f tra

vellin

g tra

ck w

ith

angu

larit

y sy

mbo

l

4 6

9 12

0/

00


ISO 12488-1:2005(E)


Tabl

e 2

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect o

f th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

hr

Hei

ght t

oler

ance

of p

oint

s of

w

heel

con

tact

of e

ach

poin

t of

trave

lling

track

0,5S

or 0

,5e

5 m

ax.

e an

d S

in m

etre

s,

inse

rt e

or S

, w

hich

ever

is th

e le

ast

1,0S

or 1

,0e

10 m

ax.

e an

d S

in m

etre

s,

inse

rt e

or S

, w

hich

ever

is th

e le

ast

1,6S

or 1

,6e

16 m

ax.

e an

d S

in m

etre

s,

inse

rt e

or S

, w

hich

ever

is th

e le

ast

2,0S

or 2

,0 e

20 m

ax.

e an

d S

in m

etre

s,

inse

rt e

or S

, w

hich

ever

is th

e le

ast

K To

lera

nce

of p

aral

lelis

m o

f cra

ne

rail

to w

eb a

t eac

h po

int o

f tra

vellin

g tra

ck

t min

= s

mal

lest

thic

knes

s of

web

0,5

t min

mm


ISO 12488-1:2005(E)


Tabl

e 3

C

onst

ruct

ion

tole

ranc

es fo

r tra

vers

ing

trac

ks o

f tol

eran

ce c

lass

es 1

to 4

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

A To

lera

nce

of s

pan

S of

cra

b ra

ils re

late

d to

rail

cent

re a

t ea

ch p

oint

of t

rave

rsin

g tra

ck

3

Val

id fo

r all

span

s S u

16

m

5

Val

id fo

r all

span

s S u

16

m

8

Val

id fo

r all

span

s S u

16

m

12,

5

Val

id fo

r all

span

s S u

16

m

b To

lera

nce

of h

oriz

onta

l st

raig

htne

ss re

late

d to

test

le

ngth

of 2

000

mm

(sam

ple

valu

e) a

t eac

h po

int o

f rai

l he

ad

Pos

ition

of c

rab

rail

in g

roun

d pl

an (d

atum

sym

bol i

n ac

cord

ance

w

ith IS

O 1

101)

1 1

2 4

E To

lera

nce

of h

eigh

t rel

ated

to

oppo

site

mea

surin

g po

ints

at

right

ang

les

at e

ach

poin

t of

trave

rsin

g tra

ck

Hei

ght o

f tra

vers

ing

track

(lat

eral

slo

pe)

3,2

Valid

for a

ll sp

ans

S u

2 m

1,6

S

E u

Em

ax; S

in

met

res,

val

id fo

r S

> 2 m

6,3

max

.

4,2

Valid

for a

ll sp

ans

S u

2 m

2 S

E u

Em

ax; S

in

met

res,

val

id fo

r S

> 2 m

8 m

ax.

5

Valid

for a

ll sp

ans

S u

2 m

2,5

S

E u

Em

ax; S

in

met

res,

val

id fo

r S

> 2 m

10

max

.

6,3

Valid

for a

ll sp

ans

S u

2 m

3,2

S

E u

Em

ax; S

in

met

res,

val

id fo

r S

> 2 m

12,

5 m

ax.

hr

Hei

ght t

oler

ance

of p

oint

s of

w

heel

con

tact

at e

ach

poin

t of

trave

rsin

g tra

ck

1,6

Valid

for a

ll sp

ans

S u

2 m

0,8

S

hr u

hr m

ax; S

in

met

res,

val

id

for S

> 2

m

3,2

max

.

2

Valid

for a

ll sp

ans

S u

2 m

1 S

hr u

hr m

ax; S

in

met

res,

val

id

for S

> 2

m

4 m

ax.

2,5

Valid

for a

ll sp

ans

S u

2 m

1,25

S

hr u

hr m

ax; S

in

met

res,

val

id

for S

> 2

m

5 m

ax.

3,2

Valid

for a

ll sp

ans

S u

2 m

1,6

S

hr u

hr m

ax; S

in

met

res,

val

id

for S

> 2

m

6,3

max

.

mm


ISO 12488-1:2005(E)


Tabl

e 3

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

Fm

ax

Tole

ranc

e of

par

alle

lism

of

end

stop

s or

buf

fers

on

trave

rsin

g tra

ck to

righ

t ang

les

to lo

ngitu

dina

l axi

s w

ith

para

llelis

m s

ymbo

l //

Pos

ition

in a

gro

und

plan

0,8

S

8 m

ax.

S in

met

res

S

10

max

.

S in

met

res

1,25

S

12,

5 m

ax.

S in

met

res

1,6

S

16

max

.

S in

met

res

mm

G

(See

N

ote)

Tole

ranc

e of

ang

ular

ity

rela

ted

to c

rab

rail

cros

s-se

ctio

n at

eac

h po

int o

f tra

vers

ing

track

with

an

gula

rity

sym

bol

4 6

9 12

0/

00

K

Tole

ranc

e of

par

alle

lism

of

crab

rail

rela

ted

to w

eb a

t ea

ch p

oint

of t

rave

rsin

g tra

ck

with

par

alle

lism

sym

bol /

/

t min

= s

mal

lest

thic

knes

s of

web

0,5

t min

m

m

NO

TE

Par

amet

er G

with

the

char

acte

ristic

of d

atum

app

lies

to c

rab

rails

with

flat

upp

er ra

il su

rface

s on

ly. F

or c

rab

rails

with

con

vex

surfa

ces,

tole

ranc

es fo

r G a

re n

ot re

quire

d.


ISO 12488-1:2005(E)


Tabl

e 4

C

onst

ruct

ion

tole

ranc

es fo

r cra

ne w

heel

s of

tole

ranc

e cl

asse

s 1

to 4

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

A To

lera

nce

of s

pan

S of

a c

rane

re

late

d to

whe

el c

entre

, whe

el

with

flan

ges

2

Val

id fo

r all

span

s S u

10

m

[2+

0,1(

S10

)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

2,5

Val

id fo

r all

span

s S u

10

m

[2,

5+0,

1(S

10)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

3,2

Val

id fo

r all

span

s S u

10

m

[3,

2+0,

1(S

10)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

4

Val

id fo

r all

span

s S u

10

m

[4+

0,1(

S10

)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

A To

lera

nce

of s

pan

S of

a c

rane

re

late

d to

whe

el c

entre

, fla

ngel

ess

whe

els,

gui

de ro

llers

on

one

sid

e

3,2

Val

id fo

r all

span

s S u

10

m

[3,

2+0,

1(S

10)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

4

Val

id fo

r all

span

s S u

10

m

[4+

0,1(

S10

)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

5

Val

id fo

r all

span

s S u

10

m

[5+

0,1(

S10

)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

6,3

Val

id fo

r all

span

s S u

10

m

[6,

3+0,

1(S

10)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

e

Tole

ranc

e of

whe

el b

ase

e or

bo

gey

dist

ance

e, 8

whe

els

3,2

Valid

for e

u 3

m

e

e in

met

res,

val

id

for e

> 3

m

4

Valid

for e

u 3

m

1,2

5e

e in

met

res,

val

id

for e

> 3

m

5

Valid

for e

u 3

m

1,6

e

e in

met

res,

val

id

for e

> 3

m

6,3

Valid

for e

u 3

m

2e

e in

met

res,

val

id

for e

> 3

m

N

Par

alle

l offs

et o

f cra

ne w

heel

s or

bog

eys,

8 w

heel

s

5

Valid

for

inde

pend

ent d

rive

only

2

Valid

for c

oupl

ed

driv

e on

ly,

S u

20

m

[2+

0,2(

S20

)]

S in

met

res,

val

id

for c

oupl

ed d

rive

only

, S >

20 m

6,3

Valid

for

inde

pend

ent d

rive

only

2,5

Valid

for c

oupl

ed

driv

e on

ly,

S u

20

m

[2,

5+0,

2(S

20)]

S in

met

res,

val

id

for c

oupl

ed d

rive

only

, S >

20 m

8

Valid

for

inde

pend

ent d

rive

only

3,2

Valid

for c

oupl

ed

driv

e on

ly,

S u

20

m

[3,

2+0,

2(S

20)]

S in

met

res,

val

id

for c

oupl

ed d

rive

only

, S >

20 m

10

Valid

for

inde

pend

ent d

rive

only

4

Valid

for c

oupl

ed

driv

e on

ly,

S u

20

m

[4+

0,2(

S20

)]

S in

met

res,

val

id

for c

oupl

ed d

rive

only

, S >

20 m

mm


ISO 12488-1:2005(E)


Tabl

e 4

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

F

Alig

nmen

t tol

eran

ce o

f gui

de

rolle

rs o

r whe

el fl

ange

s

0,32

a

a in

met

res

0,4

e

e in

met

res

0,4a

a in

met

res

0,5e

e in

met

res

0,5a

a in

met

res

0,63

e

e in

met

res

0,63

a

a in

met

res

0,8e

e in

met

res

hr

Hei

ght t

oler

ance

of p

oint

s of

w

heel

con

tact

For a

giv

en s

tiffn

ess

of

stru

ctur

es re

late

d to

whe

el

load

s, th

e di

ffere

nce

in h

eigh

t be

twee

n th

e po

ints

of w

heel

co

ntac

t sha

ll be

lim

ited

in s

uch

a w

ay th

at th

e m

ean

whe

el lo

ad

(cra

b w

ith lo

ad in

cen

tre o

f br

idge

) of t

he d

riven

whe

els

can

chan

ge b

y no

mor

e th

an

5%

. Whe

re th

is c

alcu

latio

n is

no

t mad

e, h

r is

valid

for t

he

heig

ht to

lera

nce

acco

rdin

g to

th

is ta

ble.

The

hei

ght t

oler

ance

of

the

poin

ts o

f whe

el c

onta

ct o

f a

cran

e is

the

max

imum

ver

tical

di

stan

ce o

f a p

oint

of w

heel

co

ntac

t fro

m p

lane

S, e

set

by

thre

e po

ints

of w

heel

con

tact

. Fo

r sta

tical

ly d

eter

min

ate

supp

orte

d cr

anes

, hr

= 0

,4 S

m

ay b

e us

ed.

2 m

ax.

Val

id fo

r all

span

s S u

10

m

[2+0

,1(S

10)

]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

2,5

max

.

Val

id fo

r all

span

s S u

10

m

[2,5

+0,1

(S1

0)]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

3,2

max

.

Val

id fo

r all

span

s S u

10

m

[3,2

+0,1

(S1

0)]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

4 m

ax.

Val

id fo

r all

span

s S u

10

m

[4+0

,1(S

10)

]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 1

0 m

mm


ISO 12488-1:2005(E)


Tabl

e 4

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

D

Allo

wab

le d

iam

eter

diff

eren

ce o

f co

uple

d w

heel

s fo

r one

cou

pled

dr

ive.

a/S

with

out w

heel

flan

ges

e/S

with

whe

el fl

ange

s

Whe

re

whe

els

are

coup

led

by

a co

uple

d dr

ive

or

an

elec

trica

lly d

riven

sha

ft, it

is n

eces

sary

to c

heck

whe

ther

the

max

imum

al

low

able

di

amet

er

diffe

renc

e re

quire

s hi

gher

va

lues

for

e an

d a,

or

low

er to

lera

nces

. For

cra

nes

with

two

coup

led

driv

es,

D s

hall

be d

ivid

ed b

y 1,

4.

h9

For D

1 an

d D

2.

Dia

met

er to

lera

nce

acco

rdin

g to

IS

O 2

86-2

1,6

aD

S

D in

met

res

1,6

eD S

D in

met

res

h9

For D

1 an

d D

2.

Dia

met

er to

lera

nce

acco

rdin

g to

IS

O 2

86-2

2a

D

S

D in

met

res

2eD S

D in

met

res

h9

For D

1 an

d D

2.

Dia

met

er to

lera

nce

acco

rdin

g to

IS

O 2

86-2

2,5

aD

S

D in

met

res

2,5

eD S

D in

met

res

h9

For D

1 an

d D

2.

Dia

met

er to

lera

nce

acco

rdin

g to

IS

O 2

86-2

3,2

aD

S

D in

met

res

3,2

eD S

D in

met

res

mm

k Ax

le p

aral

lelis

m to

lera

nce

in a

gr

ound

pla

n (in

clin

atio

n of

axi

s)

0,3

max

. 0,

4 m

ax.

0,5

max

. 0,

63 m

ax.

r Ax

le p

aral

lelis

m to

lera

nce

in a

gr

ound

pla

n (in

clin

atio

n of

w

heel

)

0,4

0

,5

0,6

3 0

,8

k Ax

le p

aral

lelis

m to

lera

nce

in

elev

atio

n (a

xle

cam

ber)

The

tole

ranc

es a

re fo

r an

unlo

aded

cra

ne (w

ithou

t cra

b)

with

unr

estri

cted

sup

port

on o

r ne

ar th

e en

d ca

rriag

es. T

he

mea

n va

lues

of t

oler

ance

s ar

e ch

osen

app

roxi

mat

ely

so th

at

unde

r loa

d (c

rab

with

tota

l loa

d in

cen

tre o

f brid

ge),

a ho

rizon

tal

posi

tion

of th

e w

heel

axl

e w

ill re

sult

from

ela

stic

def

orm

atio

n.

1,9

0,4

2,4

0,5

0/00


ISO 12488-1:2005(E)


Tabl

e 4

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

r Ax

le p

aral

lelis

m to

lera

nce

in

elev

atio

n (w

heel

cam

ber)

The

tole

ranc

es a

re fo

r an

unlo

aded

cra

ne (w

ithou

t cra

b)

with

unr

estri

cted

sup

port

on o

r ne

ar th

e en

d ca

rriag

es. T

he

mea

n va

lues

of t

oler

ance

s ar

e ch

osen

app

roxi

mat

ely

so th

at

unde

r loa

d (c

rab

with

tota

l loa

d in

cen

tre o

f brid

ge),

a ho

rizon

tal

posi

tion

of th

e w

heel

axl

e w

ill re

sult

from

ela

stic

def

orm

atio

n.

2

0,5

2,6

0,6

0/

00

Fm

ax

Tole

ranc

e of

par

alle

lism

of

end

stop

s or

buf

fers

on

cran

e at

righ

t an

gles

to

long

itudi

nal

axis

with

pa

ralle

lism

sym

bol /

/

(0,

8S)

S in

met

res

8 m

ax.

(1,

0S)

S in

met

res

10

max

.

(1,

25S)

S in

met

res

12,

5 m

ax.

(1,

6S)

S in

met

res

16

max

.

mm

F

Axle

par

alle

lism

tole

ranc

e of

gu

ide

rolle

rs a

cros

s tra

vellin

g tra

ck

0,5

0

,63

0,8

1

F

Axle

par

alle

lism

tole

ranc

e of

gu

ide

rolle

rs a

long

trav

ellin

g tra

ck

0,3

0

,4

0,5

0

,63

0/00

hF

Hei

ght t

oler

ance

of h

0 1+

0 1,6+

0 2,5

+

0 4+

mm


ISO 12488-1:2005(E)


Tabl

e 5

C

onst

ruct

ion

tole

ranc

es fo

r cra

b w

heel

s of

tole

ranc

e cl

asse

s 1

to 4

and

tole

ranc

e fo

r the

gui

de ro

llers

in T

able

4

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

A To

lera

nce

of s

pan

S of

a c

rab

rela

ted

to w

heel

cen

tre, w

heel

w

ith fl

ange

s

1

Val

id fo

r all

span

s S u

2 m

[1+

0,1(

S2)

]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

2

Val

id fo

r all

span

s S u

2 m

[2+

0,1(

S2)

]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

2,5

Val

id fo

r all

span

s S u

2 m

[2,

5+0,

1(S

2)]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

3,2

Val

id fo

r all

span

s S u

2 m

[3,

2+0,

1(S

2)]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

A To

lera

nce

of s

pan

S of

a c

rab

rela

ted

to w

heel

cen

tre,

flang

eles

s w

heel

, with

gui

de

rolle

rs o

n on

e si

de

1,6

Val

id fo

r all

span

s S u

2 m

[1,

6+0,

1(S

2)]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

3,2

Val

id fo

r all

span

s S u

2 m

[3,

2+0,

1(S

2)]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

4

Val

id fo

r all

span

s S u

2 m

[

4+0,

1(S

2)]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

5

Val

id fo

r all

span

s S u

2 m

[

5+0,

1(S

2)]

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

e

Tole

ranc

e of

whe

el b

ase

e of

cr

ab w

heel

s or

bog

ey

dist

ance

e, 8

whe

els

3,2

e in

met

res,

val

id

for e

u 3

m

e

e in

met

res,

val

id

for e

> 3

m

4

e in

met

res,

val

id

for e

u 3

m

1,2

5e

e in

met

res,

val

id

for e

> 3

m

5

e in

met

res,

val

id

for e

u 3

m

1,6

e

e in

met

res,

val

id

for e

> 3

m

6,3

e in

met

res,

val

id

for e

u 3

m

2e

e in

met

res,

val

id

for e

> 3

m

N

Par

alle

l offs

et o

f cra

b w

heel

s or

bog

eys,

8 w

heel

s

5

Valid

for

inde

pend

ent d

rive

only

2

Valid

for c

oupl

ed

driv

e on

ly

6,3

Valid

for

inde

pend

ent d

rive

only

2

,5

Valid

for c

oupl

ed

driv

e on

ly

8

Valid

for

inde

pend

ent d

rive

only

3,2

Valid

for c

oupl

ed

driv

e on

ly

10

Valid

for

inde

pend

ent d

rive

only

4

Valid

for c

oupl

ed

driv

e on

ly

F

Alig

nmen

t tol

eran

ce o

f gui

de

rolle

rs o

r whe

el fl

ange

s

0,3

2a

a in

met

res

0,4

e

e in

met

res

0,4

a

a in

met

res

0,5

e

e in

met

res

0,5

a

a in

met

res

0,6

3e

e in

met

res

0,6

3a

a in

met

res

0,8

e

e in

met

res

mm


ISO 12488-1:2005(E)


Tabl

e 5

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

D

Tole

ranc

e of

cra

b w

heel

di

amet

ers

h9

Dia

met

er

tole

ranc

e ac

cord

ing

to

ISO

286

-2

h9

Dia

met

er

tole

ranc

e ac

cord

ing

to

ISO

286

-2

h9

Dia

met

er

tole

ranc

e ac

cord

ing

to

ISO

286

-2

h9

Dia

met

er

tole

ranc

e ac

cord

ing

to

ISO

286

-2

hr

Hei

ght o

f tol

eran

ce o

f poi

nts

of w

heel

con

tact

1,6

max

.

Val

id fo

r all

span

s S u

2 m

[1,6

+0,1

(S2

)]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

2 m

ax.

Val

id fo

r all

span

s S u

2 m

[2+0

,1(S

2)]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

2,5

max

.

Val

id fo

r all

span

s S u

2 m

[2,5

+0,1

(S2

)]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

3,2

max

.

Val

id fo

r all

span

s S u

2 m

[3,2

-0,1

(S2

)]

max

.

S in

met

res,

val

id

for a

ll sp

ans

S > 2

m

mm

k

Axl

e pa

ralle

lism

tole

ranc

e in

a

grou

nd p

lan

of c

rab

fram

e (in

clin

atio

n of

axi

s)

0,3

0

,4

0,5

0

,63

r

Axl

e pa

ralle

lism

tole

ranc

e in

a

grou

nd p

lan

of c

rab

whe

el

(incl

inat

ion

of w

heel

)

0,4

0

,5

0,6

3 0

,8

k

Axle

par

alle

lism

tole

ranc

e in

el

evat

ion

of c

rab

fram

e (a

xle

cam

ber)

1,9 0,4

+

2,4

0,5

+

r

Axle

par

alle

lism

tole

ranc

e in

el

evat

ion

of c

rab

whe

el (w

heel

ca

mbe

r)

2 0,5

+

2,6

0,6

+

0/00


ISO 12488-1:2005(E)


Tabl

e 5

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

Fm

ax

Tole

ranc

e of

par

alle

lism

of e

nd

stop

s of

buf

fers

on

crab

at r

ight

an

gles

to lo

ngitu

dina

l axi

s w

ith

para

llelis

m s

ymbo

l //

0,8

S

S in

met

res

8 m

ax.

S

S in

met

res

10

max

.

1,2

5S

S in

met

res

12,

6 m

ax.

1,6

S

S in

met

res

16

max

.

mm

NO

TE

For t

oler

ance

s of

gui

de ro

llers

, see

Tab

le 4

.


ISO 12488-1:2005(E)


Tabl

e 6

C

onst

ruct

ion

tole

ranc

es fo

r rai

l joi

nts

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

Gra

phic

al re

pres

enta

tion

All c

lass

es

Uni

t

HF

Ver

tical

offs

et o

f the

wel

ded

join

t at t

he

rail

flang

e H

F to

be

rem

oved

by

finis

h gr

indi

ng

0 (fo

r wel

ding

in p

rodu

ctio

n)

1 m

ax. (

for w

eldi

ng o

n si

te)

HS

Hor

izon

tal o

ffset

of t

he ra

il he

ad

Pos

ition

in g

roun

d pl

an

1 m

ax.,

with

a ta

per o

f 1:5

0 to

ble

nd th

e of

fset

b In

clin

atio

n of

rail

in g

roun

d pl

an b

and

he

ight

c (l

ater

al s

lope

) with

ang

ular

ity

sym

bol

Tol

eran

ces

b an

d c

rela

ted

to a

te

st le

ngth

of 1

met

re

2

c

Une

venn

ess

near

join

t w

eldi

ng s

hall

be t

rued

up

at t

he r

ail h

ead

by

grin

ding

with

out n

otch

es

2

HX

Flat

ness

afte

r grin

ding

the

trued

-up

area

of

HS

No

finis

hing

requ

ired

at th

e ra

il en

d jo

int n

ear t

he ra

il fa

sten

ing

for a

st

agge

red

rail

end

join

t 0,

5 m

ax.

mm

Det

acha

ble

rail

join

ts s

hall

be in

acc

orda

nce

with

this

tabl

e.


ISO 12488-1:2005(E)


Tabl

e 7

O

pera

tiona

l tol

eran

ces

for t

rave

l and

trav

erse

trac

ks a

nd c

rane

and

cra

b w

heel

s of

tole

ranc

es c

lass

es 1

to 4

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

A w1

Tole

ranc

e of

spa

n S

of c

rane

ra

ils re

late

d to

rail

cent

re a

t ea

ch p

oint

of t

rave

lling

trac

k

+ A

= S m

ax S

A =

Sm

in S

10

Val

id fo

r all

span

s S u

16

m

[10

+0,2

5(S

16)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

6 m

16

Val

id fo

r all

span

s S u

16

m

[16

+0,2

5(S

16)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

6 m

25

Val

id fo

r all

span

s S u

16

m

[25

+0,2

5(S

16)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

6 m

40

Val

id fo

r all

span

s S u

16

m

[40

+0,2

5(S

16)]

S in

met

res,

val

id

for a

ll sp

ans

S > 1

6 m

B B1

Tole

ranc

e of

hor

izon

tal

stra

ight

ness

of r

ail h

ead

at

each

poi

nt o

f tra

velli

ng tr

ack

Pos

ition

of c

rane

rail

in g

roun

d pl

an

10

20

40

80

E w1

Tole

ranc

e of

hei

ght r

elat

ed to

op

posi

te m

easu

ring

poin

ts a

t rig

ht a

ngle

s at

eac

h po

int o

f tra

velli

ng tr

ack

Hei

ght o

f tra

vers

ing

track

(lat

eral

slo

pe)

10

20

40

80

A w2

Tole

ranc

e of

spa

n S

of c

rab

rails

rela

ted

to ra

il ce

ntre

at

each

poi

nt o

f tra

vers

ing

track

6

Val

id fo

r all

span

s S u

16

m

10

Val

id fo

r all

span

s S u

16

m

16

Val

id fo

r all

span

s S u

16

m

25

Val

id fo

r all

span

s S u

16

m

mm


ISO 12488-1:2005(E)


Tabl

e 7

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

E w2

Tole

ranc

e of

hei

ght r

elat

ed to

op

posi

te m

easu

ring

poin

ts a

t rig

ht a

ngle

s at

eac

h po

int o

f tra

vers

ing

track

Hei

ght o

f tra

vers

ing

track

(lat

eral

slo

pe)

12,

5 1

6 2

0 2

5

A w3

Tole

ranc

e of

spa

n S

of a

cr

ane

rela

ted

to w

heel

ce

ntre

, whe

el w

ith fl

ange

s

5

Valid

for S

u 1

0 m

[5+

0,2(

S10

)]

S in

met

res,

val

id

for S

> 10

m

8

Valid

for S

u 1

0 m

[8+

0,2(

S10

)]

S in

met

res,

val

id

for S

> 10

m

12,

5

Valid

for S

u 1

0 m

[12

,5+0

,2(S

10)

]

S in

met

res,

val

id

for S

> 10

m

20

Valid

for S

u 1

0 m

[20

+0,2

(S1

0)]

S in

met

res,

val

id

for S

> 10

m

A w3

Tole

ranc

e of

spa

n S

of a

cr

ane

rela

ted

to w

heel

ce

ntre

, with

flan

gele

ss

whe

els

and

guid

e ro

llers

on

one

side

12,

5

Valid

for S

u 1

0 m

[12

,5+0

,2(S

10)

]

S in

met

res,

val

id

for S

> 10

m

14

Valid

for S

u 1

0 m

[14

+0,2

(S1

0)]

S in

met

res,

val

id

for S

> 10

m

16

Valid

for S

u 1

0 m

[16

+0,2

(S1

0)]

S in

met

res,

val

id

for S

> 10

m

20

Valid

for S

u 1

0 m

[20

+0,2

(S1

0)]

S in

met

res,

val

id

for S

> 10

m

Dw3

To

lera

nce

on c

rane

whe

el

diam

eter

for i

ndep

ende

nt

driv

e

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

Dw3

To

lera

nce

on c

rane

whe

el

diam

eter

for c

oupl

ed d

rive

IT12

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

IT13

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

IT14

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

IT14

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

mm


ISO 12488-1:2005(E)


Tabl

e 7

(con

tinue

d)

Tole

ranc

e pa

ram

eter

To

lera

nce

Sym

bol

Des

crip

tion

with

resp

ect t

o th

is ta

ble

Gra

phic

al re

pres

enta

tion

Cla

ss 1

C

lass

2

Cla

ss 3

C

lass

4

Uni

t

Tole

ranc

e of

spa

n S

of a

cra

b re

late

d to

whe

el c

entre

, w

heel

with

flan

ges

3

Val

id fo

r all

span

s S u

2 m

[3+

0,2(

S2)

]

S in

met

res,

val

id

for S

> 2

m

6

Val

id fo

r all

span

s S u

2 m

[6+

0,2(

S2)

]

S in

met

res,

val

id

for S

> 2

m

8

Val

id fo

r all

span

s S u

2 m

[8+

0,2(

S2)

]

S in

met

res,

val

id

for S

> 2

m

12

Val

id fo

r all

span

s S u

2 m

[12

+0,2

(S2

)]

S in

met

res,

val

id

for S

> 2

m

A w4

Tole

ranc

e of

spa

n S

of a

cra

b re

late

d to

whe

el c

entre

, w

ith

flang

eles

s w

heel

s an

d gu

ide

rolle

rs o

n on

e si

de

5

Val

id fo

r all

span

s S u

2 m

[5+

0,2(

S2)

]

S in

met

res,

val

id

for S

> 2

m

10

Val

id fo

r all

span

s S u

2 m

[10

+0,2

(S2

)]

S in

met

res,

val

id

for S

> 2

m

12

Val

id fo

r all

span

s S u

2 m

[12

+0,2

(S2

)]

S in

met

res,

val

id

for S

> 2

m

16

Val

id fo

r all

span

s S u

2 m

[16

+0,2

(S2

)]

S in

met

res,

val

id

for S

> 2

m

Dw4

To

lera

nce

of c

rab

whe

el

diam

eter

for i

ndep

ende

nt

driv

e

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

h18

Tole

ranc

es

acco

rdin

g to

IS

O 2

86-2

Dw4

To

lera

nce

of c

rab

whe

el

diam

eter

for c

oupl

ed d

rive

IT12

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

IT13

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

IT14

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

IT14

Tole

ranc

es

acco

rdin

g to

IS

O 1

101

mm


ISO 12488-1:2005(E)


Bibliography

[1] ISO 8686-1:1989, Cranes Design principles for loads and load combinations Part 1: General


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