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Motor for HMHDB270 high torque hmhdb motor

HMHDB270 hydraulic motor, standard Displacement 4000cm3/r. Rated Pressure 210bar, Rated Power 149KW. Heavy load bearing, the shaft can bear greater Side Load.
The HMHDB270 is a high-performance, fixed-displacement internal gear hydraulic motor designed for heavy-duty, low-speed applications. It is widely used in construction machinery, agricultural machinery, mining equipment, and industrial automation systems. This motor features high torque output, smooth operation, compact structure, and easy maintenance, making it an ideal choice for reliable power transmission.
  • HMHDB270

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Product Introduction

HMHDB270 hydraulic motor, standard Displacement 4000cm3/r. Rated Pressure 210bar, Rated Power 149KW. Heavy load bearing, the shaft can bear greater Side Load.

The HMHDB270 hydraulic motor is a high-performance, highly reliable hydraulic power unit suitable for a variety of applications requiring high-performance hydraulic power. Its exceptional performance, efficiency, and durability make it an ideal choice for heavy machinery and equipment.

This product employs an advanced internal gear transmission structure, combined with a high-strength alloy steel spindle and gear assembly, providing excellent wear resistance and fatigue resistance. Its optimized internal flow channels effectively reduce pressure pulsation and noise levels, ensuring efficient and stable operation even under prolonged continuous operation.


It is flange-mounted and equipped with a keyway or spline shaft structure for easy direct connection to gearboxes, drive wheels, or drums. The interface uses standard G1/2" threads or JIC 10 pipe fittings, compatible with mainstream hydraulic system piping configurations. The entire machine boasts excellent sealing performance, employing high-temperature resistant fluororubber seals, suitable for operating environments from -20℃ to +80℃.


This motor exhibits good volumetric and mechanical efficiency, with an overall efficiency exceeding 85%, significantly reducing energy consumption. Simultaneously, its structural design facilitates daily maintenance, and key components are disassembled for cleaning, extending service life. It is suitable for various applications including excavator slewing mechanisms, loader travel systems, tractor power take-off units, port crane hoisting systems, and track drives for mining equipment. When using, ensure the hydraulic oil cleanliness meets ISO 4406 standard 17/14 or higher; ISO VG 46 hydraulic oil is recommended, and the filter element and lubricating oil should be changed regularly. Before initial startup, a no-load test run should be performed to confirm the absence of abnormal noises and leaks before applying a load.


Technical Parameters

Motor type
Metric

Geometric
displacement
mL/r

Average
actual
running
torque
(Nm/bar)

SPEED

PRESSURE

OUTPUT POWER

Rated.
rpm

Max.
rpm

Rated.
bar

Max.
bar

Rated.
KW

Max.
KW

HDB270

4310

61.62

110

140

210

275

149

178

HDB270/4000

4000

56.60

120

150

210

275

148

175


FAQ

FAQs
  • Is the installation dimension of your HMHDB270 hydraulic motor the same as the original motor from UK, and do any modifications need to be made during installation?
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    Our HMHDB270 hydraulic motor has the same installation dimension as the original motor from UK, and it can be used without any modifications. As long as the model is confirmed to be the same, all the installation dimensions of the motor will be exactly the same as this. But our HMHDB270 motorcase diameter is the same as the HMB325 motorcase diameter, which is 30mm than the original British HMHDB270 motor.
    Our HMHDB270 hydraulic motor is designed with identical installation dimensions to the original motor manufactured in the UK. This ensures 100% drop-in replacement compatibility, allowing for seamless integration into existing systems without any modification to mounting brackets, shaft alignment, or piping connections.The motor maintains full mechanical and hydraulic performance while offering reliable, cost-effective alternatives for maintenance and repair operations across industrial and mobile machinery applications.
  • Is the Accessories of your HMHDB270 hydraulic motor interchangeable and compatible with the original one from the UK?
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    Our HMHDB270 hydraulic motor is designed as a direct mechanical replacement for the original UK-sourced HMHDB270 motor.While the motor housing (casing) and piston assembly are different in design and material compared to the original British version, all other internal components, mounting dimensions, shaft configuration, port connections, and auxiliary parts (such as seals, bearings, end covers, and oil passages) are fully compatible and identical to the original UK motor.This ensures complete functional equivalence, reliable performance, and seamless installation without modification to the host system.
  • What is the performance change of your HMHDB270 motor after using the HMB325 motorcase?
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    Our HMHDB270 motor used the HMB325 motorcase, and since the length of the motorcase cylinder was 16mm longer the standard, we made the piston the maximum extension, which increased the effective support length of the piston, especially under load impact, and improved withstand the impact, effectively avoiding probability of the motorcase cylinder being torn under impact load, and extending the life of the motor.
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