Rexroth MCR-D Radial Piston Motor – Ultra Heavy-Duty High Torque Wheel Drive Solution

  • Extremely high torque density for ultra-heavy applications
  • Excellent performance in mining and extreme terrain environments
  • Outstanding shock load resistance
  • Long service life under continuous high-load operation
  • Direct drive solution eliminating gearbox complexity
  • High reliability in harsh operating conditions

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Bosch Rexroth MCR-D Series Radial Piston Motor

1. Application Range (Applications)

The MCR-D series radial piston motor is designed as a high-performance wheel and track drive solution for extreme heavy-duty applications, where maximum torque density, high shock resistance, and continuous duty reliability are required.

Compared with MCR-A and MCR-C series, the MCR-D is optimized for the most demanding operating conditions, including large mining equipment and ultra-heavy mobile machinery.

1.1 Mining & Earthmoving Equipment

  • Ultra-large mining dump trucks (wheel hub drive)
  • Open-pit mining haul trucks
  • Heavy-duty excavators (travel drive systems)
  • Dragline auxiliary drive systems
  • Large dozers and scrapers

1.2 Construction Machinery

  • Large wheel loaders (20–60 ton class)
  • Heavy soil compactors
  • Road milling machines (high torque drive units)
  • Stabilized road construction equipment
  • Heavy pavers and asphalt machinery

1.3 Industrial Heavy Vehicles

  • Steel plant transport vehicles
  • Port bulk material carriers
  • Heavy-duty conveyor drive systems
  • Tunnel boring machine auxiliary drives

1.4 Special Applications

  • Military heavy off-road vehicles
  • Amphibious transport systems
  • Fire-fighting and rescue heavy vehicles
  • Extreme terrain exploration vehicles

2.1 Displacement Range

Parameter Value
Displacement range approx. 1000 – 6000+ cm³/rev (depending on frame size)
Frame sizes Large / extra-large radial piston motor platforms
Design type Fixed displacement

2.2 Pressure Ratings

Parameter Value
Nominal pressure up to 450 bar
Maximum pressure (peak) up to 500 bar
Case drain pressure ≤ 2–3 bar
System type High-pressure hydrostatic closed/open circuits

2.3 Speed Range

Parameter Value
Minimum stable speed 1–3 rpm
Normal operating speed 3–200 rpm
Maximum speed up to ~400–500 rpm (size dependent)

2.4 Torque Output

Frame Class Torque Range
Heavy-duty MCR-D 20,000 – 50,000 Nm
Ultra-heavy MCR-D 50,000 – 100,000+ Nm
Maximum system configurations application dependent

2.5 Efficiency

Parameter Value
Volumetric efficiency up to 95%
Mechanical efficiency up to 90%
Overall efficiency very high under heavy load conditions

3. Design Features

3.1 Mechanical Structure

  • Reinforced radial piston rotary group
  • Heavy-duty load-bearing housing
  • High-capacity bearing system for extreme radial loads
  • Optimized torque transmission structure
  • Integrated wheel hub or final drive interface

3.2 Hydraulic Connections

  • A / B ports: main pressure ports
  • L port: case drain (mandatory)
  • Optional ports:
    • Brake release interface
    • Speed sensor connection
    • Flushing/cooling circuit ports
    • Auxiliary control ports

3.3 Optional Functions

  • Multi-disc spring-applied hydraulic release brake
  • Two-speed system (high/low torque mode)
  • Integrated speed sensor (industrial feedback systems)
  • Freewheeling function (special configurations)
  • Thermal management / flushing valve system

4. Operating Conditions

Item Specification
Hydraulic fluid Mineral oil (HLP/HVLP), biodegradable fluids optional
Viscosity range 10 – 1000 cSt (system dependent)
Filtration requirement ISO 4406: 18/16/13 or better
Ambient temperature -30°C to +80°C
Oil temperature up to 90°C (continuous duty)
Installation Flexible (wheel hub / axle / final drive)

Bosch Rexroth MCR-D Series (Simplified Table)

Material No. Model Code Series Frame Disp. (cc/rev) Pressure Options

📌 MCR10D Series

Material No. Model Frame Disp. Pressure Options
R921811384 MCR10D1120L60Z32A0M1L11 MCR10 1120 250 Standard
R921812828 MCR10D1120L60Z32A0M1L11F6SO391R MCR10 1120 250 F6 + SO391
R921812901 MCR10D1120L60Z32A0M1L42P3SO370 MCR10 1120 250 P3 + SO370
R921811390 MCR10D1250L60Z32B7M1L11 MCR10 1250 250 B7
R921813084 MCR10D1340L60Z32A0M1L11SO506 MCR10 1340 250 SO506
R921811382 MCR10D940L60Z32A0M1L11 MCR10 940 250 Standard
R921812732 MCR10D940L60Z33B7M1L11SO506A MCR10 940 250 SO506A

📌 MCR3D Series

Material No. Model Frame Disp. Pressure Options
R921812866 MCR3D160L40Z33A0M1L01P0SO533 MCR3 160 40 SO533
R921812536 MCR3D280L40Z33A0V1L01P2SO533 MCR3 280 40 P2
R921812964 MCR3D400L40Z33A0M1L01P2SO533 MCR3 400 40 SO533

📌 MCR5D Series

Material No. Model Frame Disp. Pressure Options
R921813004 MCR5D380L50Z33A0M1L01SO533 MCR5 380 50 SO533
R921812988 MCR5D470L50Z33A0M1L01SO533 MCR5 470 50 SO533
R921813003 MCR5D520L50Z33A0M1L01SO533 MCR5 520 50 SO533
R921813015 MCR5D565L50Z33A0M1L01SO533 MCR5 565 50 SO533
R921813007 MCR5D620L50Z33A0M1L01SO533 MCR5 620 50 SO533
R921812991 MCR5D750L50Z33A0M1L12SO533 MCR5 750 50 SO533
R921813009 MCR5D820L50Z33A0M1L01SO533 MCR5 820 50 SO533

📌 SRMCR-D Series

Material No. Model Frame Disp. Pressure Options
R921811393 SRMCR10D1340L60Z32A0M1L11SO506A MCR10 1340 250 SO506A
R921812094 SRMCR10D860L60Z32B5M1L42 MCR10 860 250 B5
R921811944 SRMCR15C1780F250Z32B11M1L42S MCR15 1780 250 Heavy
R921811471 SRMCR20C1750F280Z32A0M1L42F7P2SO506 MCR20 1750 280 SO506

A: We are factory and trading company.

A: Generally it is 3-5 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.

A: We can provide samples, but not for free.

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

If you have more questions, pls feel free to contact us as below:

sales@bailehydraulic.com

WeChat/WhatsApp：0086 18060096097

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