is 8422-1 (1977): piston rings for ic engines, part i
TRANSCRIPT
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है”ह”ह
IS 8422-1 (1977): Piston Rings for IC Engines, Part I:Plain Compression Rings from 30 up to 200 mm NominalDiameter R-Rings [TED 2: Automotive Primemovers]
UDC 621.43-242.3 J
( First Reprint JUNE 1998 ) IS : 9422 (Part II- 1977
( Reaffirmed 1005 )
Indian Standard
SPECIFICATION FOR PISTON RINGS FOR IC ENGINES PART I PLAIN COMPRESSION RINGS FROM
30 UP TO 200 mm NOMINAL DIAMETER
R - RINGS
I. Scope -Specifies the dimensions, tolerances, tangential loads and other details of R-rings (plain :ompression rings) from 30 up to 200 mm nominal diameter for internal combustion engines.
2. Dimensions and Tolerances - Shall be as given in the Table 1 read along with Fig. 1.
DETAIL A SHOWING CHAMFERING OF INTERNAL EOGES(KI) AN0 SLIDING EDGES (KA)
FIG. 1 PLAIN COMPRESSION RING (R-RING)
3. Designation - Shall include:
a) Type of ring,
b) Nominal diameter 4,
cl Axial width h,,
d) Number of this standard,
4 Material symbol,
f) Manufacturing process,
9) Whether inside edges chamfered (KI), and
h) Type of coating.
\,,
Example:
A plain compression ring (R-ring) having a nominal diameter d,- 90 mm, axial width h,=2*5 mm, made of S.G. iron heat-treated (A6), fully cam turned (F), with inside edges chamfered (KI) and fully coated with tin (SN) shall be designated as :
R-Ring 90x2.5 IS: 8422 (Part I) A6 F KI SN
Adopted 14 April 1977 I
0 September 1977, BIS : Gr3
BUREAU OF INDIAN STANDAFtDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
TABLE 1 DIMENSIONS AND TANGENTIAL LOADS FOR R-RINGS
(Clause 2, and Fig. 1)
(All dimensions in millimetres) - 1 I ‘-7
--
-
- ._ -- -..
I-
I--.-.
!__
I
/ ,
--____ Inside
Diameter d,
__--
Radial Wall Thickness
27 5 29.3 31 .1
1 ,25 1 ,35 1 .45
32.1 1.45 33 1.5 34 8 1.6 35-255 1 ,6
Nominal Iiameter
d,
_-
30
Zf
Axial Width of Ring Closed hl -0.010
- 0.022 Gap s1
Chamferinf of Inside
Edges (KU
Tangential Force Ft* in N*tO%, for A, Shown in Column
3
Chamfering of Sliding
Edges (KA) 10.1
+ 0.20 0.15
0
+0.20 0.20
0
2.5 0.2 0.210.1
-
--
-
_.
--
.-
-
Tol
$0.10 ---0.15 with a
maximum variation of
0.10 in a ring
1 3 - 1 .-
3.9 5.2 6.5 4.4 5.8 7.3 4.8 6.4 8.0
4.5 6.0 7.5 4.7 6.3 7.8 5.1 6.8 8.6 - 6.8 -
5.6 7.4 9.3 5.5 7.3 9.2 5.9 7.9 9.9
6.1 8.2 10.2 6.3 8.5 10.6 6.3 8.4 10.5
r3
I-7 1.75 1.85
6.7 8.9 11.2 7.1 9.5 11.9 7.3 9.8 12.2 7.6 10.1 12.6
7.3
7%
7.9
9.7 9.66
10 9.5
10.6
35
z: (38 455)
40
:: ______ .__ 45 4F 48
36-6 38 5 403
_.__~ 41 2 42.1 44
50 45.8 52 47.6 53 48 5 54 494
1 .9 1 ,95 2
-.___- 2-l 2.2 2-25 2.3
(Z”5 07)
(ES 0)
504 50 47 51.3 52.1 53.1
2-3
z5 2.45 2 45
60 54.9 2.55 (60 33) 55 93 2 55 (61 5) 56 3 2.6 6'2 56 8 2.6 63 57.7 2 65 64 58 6 27
65 59 5 66 GO 4 (66 68j 61 08 67 61 4
275 8.9 2.8 9.1
5.: 8;
+0.20 0.25
0
I.5
to.10 -0.20 with a
maximum variation of
0.15 in a ring
11 .I IO.88 10.7
ii.3 11.6
8.3 -
8; 8.5 8.7
13-9 -
I:8 14.1 14.5
- 14.9 15.2
147
15.1
158
165
164
.-b
.- 11-9 12.2 11.8 11.8
($89 88)
($04)
(73 02) 74
62 3 63 98 64.1 64 14 65.9 66.82 67 8
2 85 2 95 2 95 2 95 3 05
:.:
9.1
95
9-i
92
_-___
12.1 11 6 12.6 12-58 13-2 12.66 13.1
L
68.7 3.15 69.6 3.2
75 76
so.10 -0.20 with a
maximum variation of
0.15 in a ring
IO.1 13.4 IO.3 13.7
- 13.2 10.7 14.3
16.8 17.1
17%
10; 11 .I
II-5
: 3:;” 14.7 14.3 15.3
17: 18.4
197
11.7 11.4
1 l-8 - -
15.6 15.2 14.55 15.8 15.3 15.3
19.5 19.0
197 - -
16.4 16.9
16;
z 21.14 21
24.5 25.4
25;
17.1
17; 18
- -
21.4
;: :f’ 22.5 22.2 22.19
25.7
26: 27.0
- -
17.9 -
182 -
17;
22.3 21.88 21.82 23.0 22.19 22.07 22.0
19.2 24.0 19.5 24.3
18-1 ;;:;”
26.8 -
27; -
26; --
28.8 29.2
28;
23.9 28.7 33.5 - 27.8 -
I.5 2 2.5 0.2 0,2*0.1 (387.0)
2 2.5 3
70.4 71 .4
3.3 3.3
72.68 73.3 75.1 75.65 76.9
3.95 3.35 3.45
V&38)
(ii.55) $020
0.30 0
3.45 3.55
77.8 78.8 79.91 80.6 iii 2 81.52
t i (ii.31)
(88.9) (88.92)
90
(E.08)
3.6
:I; 3.7 3.7 3.7
:f’; 84:28 86.1
3.8
::z 3.95
2:::: with a
maximum variation of
0.18 in a ring
87 : 4.05 4.15 4.15 4.5
(ii.25)
$42)
w (98.43)
100~00 (100.61) ‘1 C&69)
(103.17) (;@‘35)
87.25
;‘9:;
90.12
0,3&0,15 0.3
90.13
91.6 4.2 92.21 4.2 93.09 4.3 93.4 4.3 9457 4.3 94.75 4.3 95.4 4.3
+0*25 640
0
2.5
96.1 97
4.45 4.5 4.5 4.5
105 106
(; O&95) $95
110 100.8 (111 .I 8) 101.78
3 3.5
Nota 1 - Dimensions within the parenthesis are not valid for new designs.
Note 2 - For intermediate sizes and oversizes for reboring, the dimensions and characteristics [other than da) of the next smaller nominal diameter aPPtY.
*Tangential load values are specified for material Al only [see IS : 5791-l 977 ‘Technical supply conditions for piston rings for internal combustion engines (first revisien)‘]. For other materials, load factors given in IS : 5791-1977 shall be used.
(Conthed)
P
TABLE 1 DIMENSIONS AND TANGENTIAL LOADS FOR R-RINGS - Contd G . .
Nominal Inside Radial Wall Thickness Axial yidThO;\Qng Closed Diameter Diameter 1 . Gap
Chamfering Chamfering Tangentia:::;; ~*Ci,?,“,‘,‘O% for h, of Sliding of Inside
d, dz aI Tol - 0.022 s1 Edges Edges (KA) (KU 1 3
1 2 ,3 I
*-to*1 -_
34.4 112 1 102.6 I 4.7 I I I I I I I ( 24.5 1 29.5 e.-. 1
(All dimensions in millimetres)
114 104.6 4.7 (114.3) 104.9 4.7
I
z3Ti LU.4 33.1 - 28.07 -
+0*25 0.40
0 0.3 0,3&0.15 I 24.7 29.6 34.7
__ _ I
.-ln . 33.9
I L4’L
I
Lc.3. I
24.9 29.8 I : 34.8
I_! I ~~-
25.5 30.6 35.6 24.5 28.5 34.4 23.6 28.4 33.1
I- -~
2.5 3 3’5 125 I 114.6 I 5.2
ii!++ I I I I I I I
126 5.2 128 117.6 5.2
I 119.2 I I
/
I
/
I
/
I
1 1
I I
I I i
I
/
I
!!:!
130 5.4 LO ‘Y
$
I JL’J
f
. ...3 a
‘;;;.I 7) 119.37 121.2 5.4 5.4 - 31.3 JL.17 36; 134 123.2 5.4 tg.2 30.2 35.2
+ 0.25 135 124 5.5
-to.10 0.50 26.1 31.4 36.6
136 125 138 127 I
--n.PFi
5.5
_ __
5.5 with a
maximum I 0 25.7 30.9 24.9 29.9 ii.8
- -
140 128.6 5.7
variation of
142 5.7 0.18 in a 130.6 ring 32.2 37.6 31.2 36.5 ty.7 ^_ ^ (142.871 I 131.47 1 5.7 I I I I I I 1~ ..-I __x I ^_^ I 33’6 ‘144 ’ 132.6 5.7 I 0.4 0.4*0,15 3V.L 85.8 40;
145 133.2 5.9 33.1 38.6 44.1 146 134.2 5.9 32.6 38.1 43.5 148 136.2 5.9 31.6 36.9 42.1
150 138 6 32.2 37.6 152 140 3 3.5 4 31.3 36.5 z.7 1
._ 6 154 142 16 l I I I I I I I 30.3 I 35.4 40.5
155 142.6 6.2 + 0.25 33.1 38.6 44.1 156 143.6 6.2 0.60 32.6 38.1 43.5 158 1456 6.2 31 .7 36.9 42.2
160 6.4 I I I I I I I I 33.9 I 39.5
165 152 6.5 166 153 6.5 -I-0.10 33.1 38.6 44.1
168 155 6.5 -0.25 +0.25 32-7 38.1 31 .7 37 .- -i
with a maximum 3
170 3.5
;;:;
:.: 4 0.60
156 6 0 0.4 0.4&O-l 5 172 158.6 variation of 33.9 39.5 45.2 174 1606 67 O-l 8 in a ring 33231 38.5 44
37.5 42.8 -._____ I- PP
175 161.2
176 162.2
E i I
40.4 - -- 178 164.2 69 40
38.9 _- ---__-. _._I _.
180 1 1658 182 167 8 184 I 169.8
--___/ 185 186 188
_~__ _ -._I
-to.15 -0 30 with a
maximum 35 4 -
+0.25 0.70
0 0.5 0.6&0.2
40.4 40 39
41 .3 40.3 39.4
46.2 - 45.7 - 44.5 -
47.2 - 46.1 - 45 -
190 variation of 192 O-23 in a ring 194
~---.-J-.___.. 195 180 75 - 196 181 7.5 40.5 46.2
-
198 183 7.5 45.7
- 200 184.6 7.7
$90.1 44.6 41 -3 47.2 -
__- __--_--
Note 1 -- Dimensions within the parenthesis are not valid for new designs.
Note 2 -~ For immediate Sizes and oversizes for reboring, the dimensions and characteristics (other than dg) of the next smaller nominal diameter applv.
*Tdngentiai load values are specified for material A, only [see IS : 5791-l 977 ‘Technical supply conditions for piston rings for internal combustion engines (first revision)‘]. For other materials, load factors given in IS : 5791-l 977 shall be used.
IS : 9422 (Part I) - 1977
4, General Requirements - Shall be as given in IS : 5791-l 977.
5. Marking - The rings which are to be fitted in a particular direction shall be marked with the word . ‘TOP’ on the top sides of the rings. For other markings reference should be made to IS : 5791-I 977.
5.1 Certification Marking - Details available with the Bureau of Indian Standards.
c
EXPLANATORY NOTE
This standard is one of the series of Indian Standards on piston ring dimensions, tangential force, etc. IS : 5791-I 977 is a necessary adjunct to this standard which gives details of materials, surface finish, gap types and sizes, surface coatings, manufacturing processes, etc.
In the preparation of this standard due consideration has been given to the prevalent sizes in the industry. It is recommended that for new designs, only the sizes given in this standard be used. The sizes given within parenthesis are non-preferred and should be avoided.
In the preparation of this standard assistance has been derived from DIN 70910 ‘Piston rings for automotive engineering, R-rings, plain compression rings from 30 up to 200 mm nominal diameter’, issued by Deutscher lnstitut fur Normung (DIN).
6
Prtnted at New India Prtntlng Press, Khurja. lndta