Product Overview
The MK05-8-124-F04-1340-0000 is a mid-displacement radial piston hydraulic motor from the Poclain Hydraulics MK compact motor series, MK05 frame size. The motor employs a radial piston cam-lobe design, integrating high torque output into an exceptionally compact housing, making it ideal for wheel motor or tool drive applications. The MK05 series offers a maximum displacement of 670 cc/rev, maximum power of 22.5 kW, maximum torque of 4265 N·m, maximum working pressure of 400 bar, and maximum speed of 130 rpm. The MK05-8-124-F04-1340-0000 specifically offers a displacement of 670 cm³/rev, theoretical torque of 1065 N·m at 100 bar, maximum power of 22 kW, and weight of approximately 34 kg.
The MK compact motor series covers MK04, MKD04, MK05, MK09, MK12, MKE12, MK18, and MKE18 frame sizes, with displacements from 272 cc/rev to 2812 cc/rev, primarily serving construction equipment, mining, agriculture, environment, material handling, railway, marine, and industrial applications. The MKE series is the frame variant with integrated brake.
The model code decodes as: “MK05” = MK compact series 05 frame size, “8” = second-generation design, “124” = displacement group, “F04” = F04 flange mounting, “1340” = wheel-mount interface configuration code, “0000” = additional function and port configuration code. The MK08-8-124-F08-1340-1A00 in the original title belongs to the MK08 frame size (displacement 667–1000 cc/rev, max power 30 kW, max torque 1590 N·m @100 bar), and the MK11-2-G21-F11-1340-58ADP to the MK11 frame size, both being larger displacement variants within the MK series.
The motor offers complete interchangeability: mounting flange, output shaft, and port configuration are identical to the original Poclain specification, enabling drop-in replacement without hose or bracket modification. Every unit undergoes 100% simulated duty-cycle testing before shipment.
Technical Specifications
MK05-8-124-F04-1340-0000 (Primary Model)
Model: MK05-8-124-F04-1340-0000
Brand Series: Poclain Hydraulics MK Series / MK05
Motor Type: Radial piston compact, low-speed high-torque
Displacement: 670 cm³/rev
Maximum Working Pressure: 400 bar
Theoretical Torque (@100 bar): 1065 N·m
Maximum Output Torque: 4265 N·m
Maximum Power: 22 kW (30 HP)
Maximum Speed: 130 rpm
Mounting Flange: F04
Mounting Configuration Code: 1340 (wheel-mount interface)
Additional Configuration Code: 0000
Rotary Group Inertia: 0.1 kg·m²
Brake Options: Optional multi-disc parking brake / service brake
Mounting Type: Wheel mount / shaft mount
Operating Temperature Range: -20°C to +80°C (reference: MK series general data)
MK05 Series Displacement Variants (Series Reference)
MK05 displacement 272 cm³/rev: Theoretical torque 432 N·m @100 bar, max power 22.5 kW
MK05 displacement 447 cm³/rev: Theoretical torque 711 N·m @100 bar
MK05 displacement 558 cm³/rev: Theoretical torque 887 N·m @100 bar
MK05 displacement 670 cm³/rev: Theoretical torque 1065 N·m @100 bar (primary model displacement)
MK08-8-124-F08-1340-1A00 (Series Reference)
Model: MK08-8-124-F08-1340-1A00
Brand Series: Poclain MK Series / MK08
Displacement Range: 667–1000 cm³/rev
Theoretical Torque (@100 bar): 1060–1590 N·m
Maximum Power: 30 kW (40 HP)
Maximum Speed: 65–100 rpm
Maximum Working Pressure: 400 bar
Mounting Flange: F08
Brake Option: Multi-disc parking brake (parking brake torque 5250 N·m)
MK11-2-G21-F11-1340-58ADP (Series Reference)
Model: MK11-2-G21-F11-1340-58ADP
Brand Series: Poclain MK Series / MK11
Frame Size: MK11 (mid-large frame in compact motor series)
Mounting Flange: F11
Mounting Configuration Code: 1340
Additional Configuration Code: 58ADP
Core Hydraulic Parameters: Reference MK11 series technical data
Key Technical Advantages
① Radial Piston Cam-Lobe Design — High Power Density with Compact Structure
The MK05-8-124-F04-1340-0000 utilizes Poclain‘s tried and tested radial piston cam design, which is continually being improved. Working cylinders arranged radially around a crankshaft deliver high torque at extremely low speeds (as low as 130 rpm) without requiring reduction gearing. MK series motors combine high power density with compact dimensions; maximum torque is increased compared to previous generations, with improved overall efficiency and reduced internal leakage. For wheel-drive or tool-drive applications, this design minimizes installation space requirements while maintaining high torque output.
② Reinforced Housing Structure — High Resistance to Variable Loads
MK05 series motors feature a reinforced housing structure specifically designed to withstand high variable loads and shock loads, suitable for demanding operating conditions in mobile equipment and heavy-duty working machinery. High-strength castings with internal reinforcement ribbing enhance overall casing rigidity and deformation resistance, effectively preventing internal fit failure caused by casing deformation during high-impact operations such as crushing, digging, and compaction, extending motor overhaul intervals.
③ Modular Architecture with Multiple Configuration Options — Flexible Installation and System Integration
MK series motors feature a modular design concept, offering wheel-mount and shaft-mount configurations, as well as standard, short, and ultra-short length variants. Users can select the most suitable configuration based on specific installation space and drive requirements. The MK05 series also offers optional multi-disc parking brake and service brake, with the integrated brake system simplifying external piping and installation footprint. Additionally, MK series motors can be equipped with optional speed sensors (T4/TR/TD types) for closed-loop control systems, providing precise rotational speed feedback signals.
④ Integrated Brake System and TwinLock™ Anti-Skid Function
The MK05 series offers multiple integrated brake options including emergency brake, service brake, and parking brake. The negative-type multi-disc parking brake works in conjunction with the motor’s distribution module, automatically engaging at stop and releasing at start, and engaging automatically in the event of hydraulic pressure loss or failure to prevent rollback on slopes. The MK series also offers the optional Poclain-patented TwinLock™ integrated anti-skid system, which automatically distributes flow between the two displacement chambers of the two-speed motor; when one wheel loses traction, the system transfers torque to the wheel with grip, significantly improving vehicle mobility on low-traction surfaces such as mud, sand, or slopes.
⑤ Broad Interchange Compatibility and Series Selection
The MK05-8-124-F04-1340-0000‘s standardized mounting interface (F04 flange) allows direct replacement of equivalent Poclain original motors. The MK compact motor series offers complete displacement coverage from MK04 (408 cc) to MK18 (2812 cc), enabling users to precisely select displacement size based on specific application torque, speed, and flow requirements. Standardized interface design maintains mounting compatibility across different displacement sizes within the same series, facilitating equipment upgrades or displacement adjustments.
Application Areas
Construction Equipment: Road rollers, vibratory compactors, mini excavators, skid steer loaders
Mining Equipment: Underground LHDs, mining trucks, drill rig travel drives
Agricultural Machinery: Combine harvesters, tractors, seeders
Material Handling: Forklifts, telehandlers, port tractors
Railway Equipment: Track maintenance vehicle travel drives
Marine & Offshore: Deck machinery, winch drives
Environmental Equipment: Municipal sweepers, garbage compaction trucks
Industrial Applications: Compact hydraulic transmission systems requiring low-speed high-torque direct drive
Expert Maintenance Tips
Pre-Installation Inspection: Verify flatness and cleanliness of the F04 flange mating surface; check thread condition of mounting bolt holes. For wheel-mount (1340 configuration) applications, ensure wheel hub-to-output flange coaxiality within 0.05 mm; excessive misalignment causes bearing edge loading and premature seal wear. Use bolts of strength class 8.8 or higher, tightened in diagonal sequence to specified torque.
First Commissioning: The motor casing must be filled with clean hydraulic oil before initial start-up. Fill through the highest casing port until oil overflows from the level port. Dry starting causes metal-to-metal contact between piston-to-cam ring surfaces and the valve plate without lubrication, resulting in irreversible damage. For MK05 models equipped with integrated brakes, confirm the brake circuit has been properly bled to avoid delayed brake release.
Fluid Cleanliness: Maintain system oil cleanliness at NAS 8 (ISO 4406 18/16/13) or better. The radial piston motor’s valve plate and piston pairs are sensitive to particulate contamination; excessive contamination accelerates wear and causes volumetric efficiency degradation. Inspect return filter elements regularly and replace per the machine manufacturer‘s recommended interval.
Scheduled Inspection: Check casing drain flow and brake clearance every 500 operating hours. Under normal conditions, drain flow should remain stable; a sustained increase indicates accelerated wear of piston pairs or valve plate surfaces, and preventive maintenance should be scheduled. Inspect the output flange area for oil seepage; replace seals at the first sign of degradation. For TwinLock™-equipped models, periodically verify anti-skid function operation, confirming proper torque distribution under low-traction conditions.
Long-Term Storage Protection: If the motor will be idle for more than 3 months, fill the casing with rust-preventive hydraulic oil and manually rotate the shaft several turns monthly to prevent corrosion or adhesion on piston-to-cam ring interfaces and valve plate surfaces. Perform a no-load run-in before returning to service.
