MK47 Poclain Compact Radial Piston Motor 5624cc 450bar

Product Overview

The Poclain MK47 (and MKE series) is a compact radial piston hydraulic motor from the MK range by Poclain Hydraulics, featuring an internal cam-lobe roller-piston design with four-contact roller bearings. Ultra-slim with large diameter, it is optimized for high-torque applications where installation space is limited. Maximum displacement reaches approximately 5624 cm³/rev, with maximum pressure up to 450 bar, peak torque around 8942 Nm (at 100 bar), maximum power up to 110 kW, and speeds up to 50 rpm. Our units, including the specific code MK47-2-A20-R18-1140-7H00 and companion sizes MK04, MK05, MK09, MK12, MK18, MKE18, MK23, MKE23, MK35, MK47, are manufactured to original specifications, offering 100% interchangeability (flange, shaft end, valving, and dimensions fully match OEM) and 100% simulated-duty testing. They deliver reliable performance under heavy loads, low speeds, high pressure, and harsh conditions as cost-effective direct replacements for genuine Poclain motors.

Technical Specifications 

• Model: MK47-2-A20-R18-1140-7H00 (series also available in MK04, MK05, MK09, MK12, MK18, MKE18, MK23, MKE23, MK35, MK47 and related codes)
• Displacement range: up to approx. 5624 cm³/rev (single or dual displacement)
• Max pressure: up to 450 bar
• Max torque: approx. 8942 Nm (at 100 bar); higher peak values
• Max power: up to 110 kW
• Max speed: up to approx. 50 rpm
• Control: Fixed or dual-displacement modular valving system
• Design: Compact radial piston internal cam-lobe roller design with four-contact roller bearings; ultra-slim large-diameter construction
• Inertia: approx. 0.6 kg·m²
• Approx. weight: 171–183 kg (depending on configuration)
• Options: Integrated parking/service brake, TwinLock anti-skid, hollow shaft, etc.

Key Technical Advantages

1. Precision internal cam-lobe and roller-piston design combined with four-contact roller bearings delivers high starting torque, smooth low-speed operation, strong radial load capacity, and excellent volumetric/mechanical efficiency.
2. Ultra-slim large-diameter compact design minimizes axial installation space, ideal for compactors and other space-critical applications while providing high power density.
3. High-strength bearings and optimized sealing support continuous heavy-duty operation with low noise and long service life; optional hollow shaft facilitates integration of vibratory motors.
4. Full dimensional and performance interchangeability plus rigorous simulated-duty testing guarantee drop-in replacement of original Poclain units, minimizing downtime and lifecycle costs.

Application Areas

Ideal for compaction equipment, construction machinery, material handling, agricultural machinery, mining, and industrial drives requiring high torque in a compact package. Typical applications include rollers, vibratory compactors, loaders, drilling rigs, forestry machines, port equipment, and other direct-drive wheel or shaft systems.

Expert Maintenance Tips

• Verify exact match of mounting flange, shaft end (spline or keyed), and valving interface before installation; observe radial load limits of the four-contact bearings; avoid forced assembly.
• Maintain hydraulic fluid cleanliness to recommended levels using specified viscosity oils; regularly check case drain and brake system pressures.
• For dual-displacement or braked configurations, ensure correct pilot line connections; monitor temperature, speed, and torque during commissioning.
• Periodically inspect rollers and cam for wear; use OEM-spec seals and filters during service and record operating parameters to predict maintenance intervals.