MK05-2-124-F04-1340-0000 Poclain Radial Piston Motor

Product Overview

The Poclain MK05-2-124-F04-1340-0000 is a compact radial piston hydraulic motor designed for low-speed, high-torque mobile applications, particularly wheel-drive and compaction equipment.

According to the official Poclain MK05 technical catalog, the “2” displacement code corresponds to 670 cc/rev, while the 670 cc/rev configuration is rated for a maximum speed of 55 rpm and a maximum pressure of 400 bar. The F04 code identifies a radial-port multidisc parking brake configuration.

Poclain currently positions the MK05 as a compact direct-drive motor for wheel motor and shaft motor applications. The series is intended for construction equipment, including compactors, as well as mining, agricultural and environmental machinery.

For replacement applications associated with BOMAG 05819031, the motor should be matched against the complete motor identification code and the machine serial number rather than relying on the MK05 family designation alone.

Technical Specifications

• Manufacturer: Poclain Hydraulics
• Series: MK05 Compact Motors
• Model: MK05-2-124-F04-1340-0000
• Motor Type: Radial piston cam hydraulic motor
• Drive Configuration: Compact direct drive
• Application Type: Wheel motor/shaft motor
• Displacement: 670 cc/rev
• Maximum Pressure: 400 bar / 5,800 psi
• Maximum Speed at 670 cc/rev: 55 rpm
• Theoretical Torque at 100 bar: 1,065 Nm / 542 lb-ft
• Maximum Series Power: 22.5 kW / 30 HP
• Motor Inertia: 0.1 kg·m²
• Brake Configuration: F04 radial-port multidisc parking brake
• Brake Principle: Spring applied, hydraulically released
• Minimum Brake Release Pressure: 14 bar
• Maximum Brake Release Pressure: 30 bar
• F04 Parking Brake Torque at 0 bar Housing Pressure: 3,500 Nm
• F04 Emergency Dynamic Braking Torque: 2,275 Nm
• F04 Residual Parking Torque: 2,625 Nm
• Brake Release Capacity: 15 cm³
• Approximate MK05 Oil Volume: 1.00 L, configuration dependent
• Weight: MK05 catalog configurations are approximately 32–40 kg; one distributor listing for Poclain part 002343869J specifies 36 kg. Final system weight should be confirmed from the actual assembly.

Key Technical Advantages

High-Displacement Radial Piston Design

With 670 cc/rev displacement, the MK05-2 is optimized for high torque at relatively low rotational speed. Poclain specifies a maximum speed of 55 rpm for this displacement configuration, making it particularly suitable for wheel-drive and compaction applications rather than high-speed hydraulic transmission.

High-Pressure Capability

The official MK05 specification allows operation up to 400 bar maximum pressure. This pressure capability supports high hydraulic power density while retaining the compact packaging required by mobile machinery.

Integrated F04 Multidisc Parking Brake

The F04 brake is a spring-applied, hydraulically released multidisc brake. When release pressure is removed, the spring force applies the brake, providing a fail-safe parking function for mobile machinery.

The F04 configuration provides 3,500 Nm parking brake torque at zero housing pressure for a new brake, with a specified release pressure range of 14 to 30 bar.

Compact Direct-Drive Architecture

Poclain describes the MK05 as a compact direct-drive motor suitable for wheel and tool drive applications. This architecture helps reduce transmission complexity and installation space where the motor can be integrated directly into the machine drive system.

Designed for Mobile Equipment Loads

The Poclain technical documentation emphasizes that radial and axial loads must be checked against permissible component loads and bearing service-life requirements. This is particularly important for wheel-mounted motors used on rollers and compactors.

Application Areas

• BOMAG Road Rollers
• BOMAG Soil Compactors
• Tandem Rollers
• Asphalt Compaction Equipment
• Construction Compactors
• Mobile Construction Machinery
• Mining Equipment
• Agricultural Machinery
• Environmental Machinery
• Low-Speed Wheel Drive Systems
• Industrial Tool Drives

Poclain specifically identifies compactor applications within construction equipment and also lists mining, agriculture and environmental machinery as suitable markets for MK05 motors.

Expert Maintenance Tips

Verify the Drain-Line Arrangement

For configurations equipped with a brake, Poclain specifies that the sealing chamber between the brake and the motor mounting face must be connected to the drain line to prevent disturbances to smooth motor operation.

Control the F04 Brake Release Pressure Correctly

The F04 brake requires a release pressure within the specified 14–30 bar range. Do not substitute brake-pressure data from another Poclain motor family or another brake code.

Respect the 55 rpm Limit for MK05-2

The overall MK05 family reaches up to 130 rpm at its smallest displacement, but MK05-2 is the 670 cc/rev configuration and its official maximum speed is 55 rpm. The series maximum should not be used as the application limit for this model.

Check Wheel-End Radial Loads

For road rollers and compactors, external wheel loads can significantly influence bearing life. Radial load, axial load and operating pressure should therefore be evaluated together against Poclain’s permissible-load data.

Match the Complete Product Code

For replacement procurement, verify the complete identification:

MK05 → 670 cc/rev displacement code → connection configuration → F04 brake → 1340 dimensional configuration → option code → BOMAG part number → motor nameplate

This approach is much safer than matching by the MK05 family name alone and is essential when specifying an interchangeable replacement for BOMAG 05819031.