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HMC045 Precision Engineered Motor for Reliable Performance

HMC045 Industrial Motor with Precision Engineering for Reliable Output

HMC045 two-speed motor has two preset displacements to choose from a wide range to suit specific application requirements. Control and selection is made via directional valve which can be remotely mounted or directly mounted on the motor. The displacement can be easily changed while the motor is running.

Type：Dualdisplacement radialpiston lowspeed hightorque motor (twospeed switchable onload)HMC = 2speed variable displacement；HMB = fixed displacement；HMJC045 = domestic retrofit copy of HMC045.

Model:
HMC045

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Product Introduction

Key features

1. Onload twospeed shift: switch largedisplacement hightorque / smalldisplacement highspeed while running, controlled by hydraulic valve; optional electrohydraulic control, freewheel functionKawasaki P....

2. Hydrostatic balanced valve plate, good starting torque, stable lowspeed performance, shockload resistant.

3. Wide fluid compatibility: antiwear oil, waterglycol, HFA/HFB/HFD fluids (derate for nonmineral oil)Kawasaki P....

4. Case drain: continuous case pressure ≤3.5 bar for standard shaft seal; highpressure seal optionalKawasaki P....

Typical applications

· Marine: winches, anchor windlass, hatch cover drives

· Industry: shredders & crushers, injectionmolding screw drive, slewing drives, winches, mining equipment

Common symptoms to watch

1. Higher casedrain flow → internal wear (valveplate / pistonlink assembly).

2. Noise + vibration → oil contamination, bearing wear, cavitation.

3. Twospeed not switching → check shift pilot pressure.

HMC045 Two-Speed Motor

This is a low-speed high-torque dual-displacement radial piston hydraulic motor, not an electric two-speed motorKawasaki P....

Working Principle

It has two preset fixed displacements, switched hydraulically by a directional valve:

Large displacement: low speed, high torque for heavy load
Small displacement: high speed, low torque for light load & fast operation
Displacement shift can be performed on-load. Freewheel option is available.

Model Code Example

HMC045/P/FM3/C/60

HMC045: Frame size
P/S/Z: Housing version
FM3: 1¼” SAE 4-hole metric flange
C/X: Control type (shift control, freewheel etc.)
60: Seal / fluid version

Important Note

“Two-speed” for HMC series means dual-displacement hydraulic motor, not pole-changing Y-Δ electric motor.

Other models in the same range: HMC080 / HMC125 / HMC200 / HMC270 / HMC325

Technical Parameters

Motor type Metric	Disp. Code	Disp. mL/r	Spec. Torque N.m/bar	SPEED		PRESSURE		OUTPUT POWER
Motor type Metric	Disp. Code	Disp. mL/r	Spec. Torque N.m/bar	Rated. Rpm	Max. rpm	Rated. bar	Max. bar	Rated. KW	Max. KW
C045	45	737	10.66	230	285	210	275	54	65
	40	655	9.32	250	315	210	275	51	61
	35	573	8.02	275	335	210	275	48	58
	30	491	6.75	300	375	210	275	45	53
	25	410	5.54	335	415	210	275	41	49
	20	327	4.34	365	455	210	275	35	42
	15	246	3.21	400	500	210	275	28	34
	10	163	20.9	400	500	210	275	18	22
	5	81	0	800	800	17	17	0	0
	0	0	0	1000	1000	17	17	0	0

Installation Dimensions

Installation Dimensions for HMC045.pdf

FAQ

FAQs

Is the installation dimension of your HMC045 hydraulic motor the same as the original motor from UK, and do any modifications need to be made during installation?

Our HMC045 hydraulic motor has the same installation dimension as the original motor from UK, and it can be used without any modifications.
This HMC045 hydraulic motor is dimensionally interchangeable with the original UK motor and supports direct replacement without mechanical alteration.
If you want, I can also add a line about performance comparison (torque, pressure, speed) to complete the replacement description.
Is the Accessories of your HMC045 hydraulic motor interchangeable and compatible with the original one from the UK?

Crankshaft (position of the shaft seal), front cover (position of the shaft seal), and shaft seal of our HMC045 hydraulic motor are different the original one from the UK. The rest of all accessories of our HMC045 hydraulic motor are interchangeable and compatible with the original UK motor, facilitating convenient part replacement and maintenance.
Our HMC045 hydraulic motor has identical installation dimensions to the original UK motor for direct drop‑in replacement, and its supporting accessories are also interchangeable and fully compatible.

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