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DC-MO/SRP1 | 10/07/2018
© Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.1
Bosch Rexroth
MCR Radial Piston Motors
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
© Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.2
Manufacturing Plant Information
Business Unit : Mobile Components (MO)
Product : Radial Piston Motors (ORP)
Location: Glenrothes, Scotland
No. of employees: ~ 420
Production Qty 2017: 118,000pcs
Floor Area: 15000m2
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
© Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.3
Customer Overview
DC-MO/SRP1 | 10/07/2018
© Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.4
Product Overview
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
© Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.5
Standard Product RangeMCR3 MCR5 MCR10 MCR15 MCR20
LD160
225
255
280
HD
325
365
400
LD380
470
520
565
HD620
680
750
820
LD
780
860
940
HD
1120
1250
1340
LD
1130
1250
1500
HD
1780
2150
LD
1750
2100
HD
2500
3000
2
4
6
8
10
12
14
16
18
MCR5
MCR10
MCR15
MCR3
MCR20
LD HD
750
820
920
MCR6
MCR6MCR4
LD HD
325
470
MCR4
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Rotary GroupsLow Displacement (LD)
Cylindrical Piston design
High Displacement (HD)
Stepped Piston design
max ∆P = 450bar max ∆P = 400bar
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Motor Variants
MCR – A MCR – F/W MCR - H MCR - T
Wheel Hydrobase CTL TrackSSL /
Excavator
MCR-W :
Wheel Drive, heavy duty
MCR-F :
Wheel Drives, medium duty
MCR 3, 5, 6*, 10 & 15
Hydrobase without bearings & front case
to fit customer interface
MCR3, 5, 10, 15 & 20
Track Drive for CTL
MCR5, 6 & 10
Double Sprocket,
Splined or Pinion
Shaft
MCR 3,5, 10 & 15
RE 15198 / 15200 RE 15199 RE 15221RE 15195
MCR – D/E
Industrial
Applications
MCR-D :
Flange mounting
MCR-E :
Face mounting
MCR 3, 5 & 10
RE 15196
MCR - R
Drive Assist
HTA Hydraulic Drive Assist
Series 41
MCR10
RE 15223
MCR - S
SSL
Double sprocket chain drive for SSL (up to 55 kW)
MCR4 (325 –470cc)
RE Pending
*MCR6F/W is 2 speed only
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Motor Components
Brake
Rear Case Assembly
Rotary Group
Front Case Assembly
Modular Design
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Motor ComponentsShaft
Flange
Front Bearing Rear Bearing
Rotary Group
Distributor
MCR F-TypeParking
Brake
Mounting Flange
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MCR Applications
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Variants by application groupConstruction Road rollers
Compaction equipment
Pavers/Finishers
Concrete Mixer
Mini dumpers
Mini & Midi Excavator
Compact Track Loaders
Skid Steer Loaders
Material HandlingMining transporters
Drilling Rigs
Fork Lift Trucks 1.5t – 6.0t
Side loaders
Piggy-back trucks
Aerial Work Platforms
Agriculture
& ForestryCoffee & Citric Harvesters
Forestry Processing Heads
Vineyard Machine
Sprayer
Potato Harvester
Harvesting Heads
Commercial
VehiclesAirport vehicles
Sweepers
Municipal Multi purpose
Turf care
Heavy duty on-road vehicles
MCR 5
MCR 10
MCR 15
MCR 20
MCR 3MCR-A
MCR-F
MCR-H
MCR-T
MCR-X
MCR-W
MCR-W
MCR-FMCR-A MCR-R
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Radial piston motors for frame integrated drives: MCR-A Size 160cc to 2150cc
Differential pressure up to 450 bar
Torque output up to 13687 Nm
Speed up to 875 rpm
Front case mount
* List of displacements is not exhaustive. Other displacements are available within this range.
Displacement Vg max cmᶾ * 160 400 565 820 1340 2150
Torque ᵀMax Nm 1146 2546 4047 5220 8531 13687
Maximum Speed ᴺMax rpm 875 350 385 265 125 125
Maximum Δp Δp max bar 450 400 450 400 400 400
Weight m kg 28 28 50 50 70 95
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Radial piston motors for wheel drives: MCR-F Size 160cc to 2150cc
Differential pressure up to 450 bar
Torque output up to 13687 Nm
Speed up to 875 rpm
Rear case mount
Displacement Vg max cmᶾ * 160 400 565 820 1340 2150
Torque ᵀMax Nm 1146 2546 4047 5220 8531 13687
Maximum Speed ᴺMax rpm 875 350 385 265 125 125
Maximum Δp Δp max bar 450 400 450 400 400 400
Weight m kg 28 28 50 50 70 95
* List of displacements is not exhaustive. Other displacements are available within this range.
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Radial piston motors for heavy duty wheel drives: MCR-W Size 160cc to 1340cc
Differential pressure up to 450 bar
Torque output up to 8531 Nm
Speed up to 875 rpm
High radial forces permitted on drive shaft
Displacement Vg max cmᶾ * 160 400 620 820 1120 1340
Torque ᵀMax Nm 1146 2546 3947 5220 7130 8531
Maximum Speed ᴺMax rpm 875 350 350 265 150 125
Maximum Δp Δp max bar 450 400 400 400 400 400
Weight (1L/2W) m kg 28/30 28/30 46/53 46/53 65 65
* List of displacements is not exhaustive. Other displacements are available within this range.
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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MCR-W enhanced loading capabilityRadial Piston Motor range in frame sizes 3, 5 & 10:
• 50 percent higher radial load capacity compared to
standard radial piston motors
• Compact and robust construction with mechanical duo-
cone face seals and steel retaining ring for HD cylinder
blocks as standard
• High overall efficiencies with smooth running at very low
speeds
• Available with standard range of MCR options (2 speed,
sensor, flushing, brake)
• Commonly used on forestry harvesting heads, fork lift
trucks and municipal multi purpose vehicles
Technical data
Series: 33
Sizes: 160 cc to 1340 cc
Differential pressure: up to 450 bar
Torque output: up to 8531 Nm
Speed: up to 875 rpm
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Radial piston motors for track drives: MCR-T
Size 380cc to 1340cc
Differential pressure up to 450 bar
Torque output up to 8531 Nm
Speed up to 250 rpm
Compact robust construction
Displacement Vg max cmᶾ * 380 565 920 1120 1250 1340
Torque ᵀMax Nm 2450 3640 5930 7220 8060 8531
Maximum Speed ᴺMax rpm 250 250 195 230 210 195
Maximum Δp Δp max bar 450 450 450 450 450 450
Weight m kg 62.8 62.8 65.9 93.6 93.6 93.6
* List of displacements is not exhaustive. Other displacements are available within this range.
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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MCR-T advantageNew Radial Piston Motor range in frame sizes 5, 6 & 10:
Compact drive solution for track and wheel applications
Starting efficiency improvement of 10% compared with
conventional design
Installation length is 20% shorter due to integrated
holding brake
Optimised shaft position allows use of simplified sprocket
design
Higher radial loads can be accommodated due to the
optimised load distribution
MCR6T option with 9 pistons offers 2/3 secondary
displacement ratio, which is optimal for many market
requirements
Technical data
Series: 33
Sizes: 380 cc to 1340 cc
Differential pressure: up to 400 bar
Torque output: up to 8640 Nm
Speed: up to 250 rpm
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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MCR-T features
Internal brake reduces
overall length by 20%
compared to standard
braked MCR
Larger bearings than
standard MCR motors
Both bearings immersed in
clean & flushed fluid
improving bearing life
Shaft design places
mounting flange between
bearing centres optimising
load distribution
2-Speed spool located
in distributor reduces
external dimensions
Enhanced rotary group
design results in 10%
starting efficiency
improvement
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Radial piston motors for chain drives: MCR-SNew Radial Piston Motor range in frame size MCR4:
Improved and tailored functionality with regards to the
requirements of a SSL
Reduced length and optimized interface
Enhanced efficiency with reduced pressure drop
compared to standard range
New range of displacement (MCR4) to cover small and
mid range SSL (<55KW) up to 470cc
Single and two speed (2 speed ratio of 66%)
Integrated parking brake (≥2200Nm)
SOP planned Q1, 2019
Technical data
Series: 33
Sizes: 325cc to 470cc
Differential pressure: up to 400 bar
Torque output: up to 2992 Nm
Speed: up to 395 rpm
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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MCR-S length comparison with MCR-A
MCR3-A 2-s MCR3-A 1-s MCR4-S 2-s* MCR5-A 2-sMCR5-A 1-s
*showing the MCR5 sprocket S106
155m
m
MCR4-S 1-s*
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Product Development: MCR4FNew Radial Piston Motor range in frame size MCR4F:
New range of displacement (MCR4) to cover 325 up to
470cc
Reduced length and optimized interface. Overall length
220.5mm (single speed) and 257.5mm (two speed).
Calculated weight of two speed variant 28kg and single
speed variant is 26kg
Enhanced efficiency with reduced pressure drop
compared to standard range
Single and two speed (2 speed ratio of 66%)
Integrated parking brake option (≥2200Nm)
SOP planned Q2, 2019
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Optional features overviewMotor Type Parking Brake
(multi – disc)
Dynamic
Brake
(drum)
Bi-directional
two speed
Integrated
flushing valve
Speed
sensor
MCR-A • - • • •
MCR–F/W • • • • •
MCR-D/E • - • • •
MCR-H • - • • •
MCR-R - - -Standard
Feature-
MCR-SStandard
Feature- • • •
MCR-TStandard
Feature- • • •
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MCR Product Update
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Efficiency Improvements
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Starting Efficiency Improvements
Polished Rollers Optimised Cam Profile (HD)
Enhanced cylinder bore finish
MCR Radial Piston Motor Overview
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Analysis of test results indicated a consistent difference
in torque ripple between high and low displacement
motor sharing the same cam (Typically 2% for low
displacement and 5% for high displacement)
Investigation has revealed that the MCR cam designs
are optimised for low displacement rollers and when
using the larger roller diameter of high displacement
rotary group, the torque ripple increases
Work is ongoing to optimise a separate cam for high and
low displacement motors with an expected motor
efficiency increase of 5% for high displacements
Starting Efficiency Improvements: Optimised Cam
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Starting Efficiency Improvements
MCR Radial Piston Motor Overview
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Integrated speed sensor
Hall-effect sensors with direction and frequency detection
MCR3 target disc available with 96 teeth
MCR5 target disc available with 100 teeth
Available with 250mm and 1500mm cable length options
MCR Radial Piston Motor Overview
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Duty cycle / condition monitoring
DSA1 - Speed Sensor
PR4 - A Port Pressure
TSF - Case Temperature
VS - Contamination Switch
PR4 - Case Pressure
PR4 - B Port Pressure
MCR motors with integrated sensors support the electronification of the
hydrostatic drive
Real time duty cycle data can be recorded using a range of optional
sensors
Enhanced machine uptime and increased productivity
Real time system health status
Data collection utilized as part of predictive maintenance program
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Motor sources of
further information
MCR Radial Piston Motor Overview
DC-MO/SRP1 | 10/07/2018
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Motor DatasheetsRE15195 – A type – Spline shaft for integrated drives
RE15196 – D & E types – Keyed shaft for industrial applications
RE15197 – C type – Compact motor
RE15198 – F type – Wheel drives
RE15199 – H type – Hydro base
RE15200 – W type – Heavy duty wheel drives
RE15221 – T type – Track Drives
RE15223 – R type – Drive assist
Information DatasheetsRE15225-01 – Flushing options
RE15225-02 – Freewheeling options
RE15223-03 – 2-Speed soft shifting
RE15223-04 – HET (High Efficiency Traction)
Sources of information