Displacement & performance
- Displacement changed within a series
- Torque, speed, pressure and power matched to the duty
- Reversible rotation
01Five-cylinder star block
02Mounting flange
03Output shaft
Typical JHM configuration shown. Actual construction is per the approved drawing.
Hydraulic motor · Mainly custom-built
JHM Series
Hydraulic Motor
A crankshaft and connecting-rod low-speed, high-torque motor (5-cylinder radial star-type motor). The eccentric crankshaft and five-piston design runs quietly; starting torque is high and the motor runs smoothly at very low speed. A flat compensating valve plate keeps leakage low, the connecting rods run on rollers on the crankshaft, and the motor is reversible. Displacement, output shaft and distributor can be configured to suit the machine.
- Catalog models
- 44models · 7 series
- Rated output torque
- 253.75–13,508N·m
- Displacement
- 64–4,828ml/r
Rated pressure 16–25 MPa, maximum pressure 20–32 MPa; a maximum power (15–158 kW) is listed for every model. All models in a series share the same outline and size, so torque and speed can be changed on the same mounting interface.
Technical data
JHM Series model data
Use the selection map to locate models by the torque and speed you need, then see the full data for that series in the table below.
Selection map
Each dot is one catalog model
N·m
r/min
Showing all 44 models
Horizontal axis: rated torque (N·m, log scale). Torque and speed cannot both be at their upper limits; each model is limited by its maximum power.
Click any model on the map to see its data, or enter the torque you need.
Smallest models that qualify
Series
Unit
Filtered by selection map
| Model | Displacement (ml/r) | Rated torque (N·m) | Rated / max. pressure (MPa) | Speed range (r/min) | Max. power (kW) |
|---|---|---|---|---|---|
| JHM15 models · motor weight 20 kg · 64–159 ml/r · 253.75–505 N·m | |||||
| JHM1-63 | 64 | 253.75 | 25 / 31.5 | 15~1500 | 15 |
| JHM1-80 | 77 | 305.7 | 25 / 31.5 | 15~1250 | 15 |
| JHM1-100 | 96.4 | 383 | 25 / 31.5 | 15~1000 | 15 |
| JHM1-125 | 125.6 | 399 | 20 / 25 | 15~1000 | 15 |
| JHM1-160 | 159 | 505 | 20 / 25 | 15~1000 | 15 |
| JHM26 models · motor weight 27 kg · 113–276 ml/r · 420–670 N·m | |||||
| JHM2-100 | 113 | 420 | 25 / 32 | 15~1250 | 22 |
| JHM2-150 | 159 | 620 | 25 / 32 | 15~1000 | 22 |
| JHM2-175 | 180 | 526 | 20 / 25 | 15~1000 | 22 |
| JHM2-200 | 206 | 600 | 20 / 25 | 8~800 | 22 |
| JHM2-250 | 235 | 607 | 16 / 20 | 8~630 | 22 |
| JHM2-280 | 276 | 670 | 16 / 20 | 8~500 | 22 |
| JHM36 models · motor weight 35 kg · 181–380 ml/r · 710–1,040 N·m | |||||
| JHM3-175 | 181 | 710 | 25 / 32 | 8~800 | 36 |
| JHM3-200 | 201 | 800 | 25 / 32 | 8~700 | 36 |
| JHM3-250 | 254 | 949 | 25 / 32 | 8~600 | 38 |
| JHM3-300 | 289 | 864 | 20 / 25 | 8~500 | 39 |
| JHM3-350 | 340 | 1040 | 20 / 25 | 8~420 | 36 |
| JHM3-400 | 380 | 949 | 16 / 20 | 6~350 | 36 |
| JHM66 models · motor weight 57 kg · 397–754 ml/r · 1,463–1,775 N·m | |||||
| JHM6-400 | 397 | 1483 | 25 / 32 | 5~800 | 52 |
| JHM6-450 | 452 | 1638 | 25 / 32 | 5~700 | 52 |
| JHM6-500 | 491 | 1463 | 20 / 25 | 5~600 | 52 |
| JHM6-600 | 594 | 1775 | 20 / 25 | 4~550 | 52 |
| JHM6-700 | 683 | 1633 | 16 / 20 | 4~420 | 52 |
| JHM6-750 | 754 | 1760 | 16 / 20 | 4~350 | 52 |
| JHM117 models · motor weight 94 kg · 682–1,301 ml/r · 2,667–3,512 N·m | |||||
| JHM11-700 | 682 | 2667 | 25 / 32 | 4~400 | 78 |
| JHM11-800 | 782 | 2959 | 25 / 32 | 4~400 | 78 |
| JHM11-900 | 894 | 3480 | 25 / 32 | 4~320 | 80 |
| JHM11-1000 | 981 | 2947 | 20 / 25 | 4~320 | 82 |
| JHM11-1100 | 1104 | 3336 | 20 / 25 | 4~250 | 80 |
| JHM11-1200 | 1234 | 3512 | 20 / 25 | 4~250 | 78 |
| JHM11-1300 | 1301 | 3080 | 16 / 20 | 4~200 | 78 |
| JHM166 models · motor weight 170 kg · 1,413–3,041 ml/r · 5,138–7,326 N·m | |||||
| JHM16-1400 | 1413 | 5138 | 25 / 32 | 2~300 | 92 |
| JHM16-1600 | 1648 | 6158 | 25 / 32 | 2~240 | 103 |
| JHM16-1800 | 1814 | 5433 | 20 / 25 | 2~225 | 103 |
| JHM16-2000 | 2034 | 6030 | 20 / 25 | 2~200 | 100 |
| JHM16-2400 | 2267 | 5763 | 16 / 20 | 2~150 | 92 |
| JHM16-3000 | 3041 | 7326 | 16 / 20 | 2~120 | 100 |
| JHM318 models · motor weight 298 kg · 2,553–4,828 ml/r · 9,135–13,508 N·m | |||||
| JHM31-2500 | 2553 | 9523 | 25 / 32 | 2~250 | 132 |
| JHM31-2800 | 2683 | 10559 | 25 / 32 | 1~200 | 134 |
| JHM31-3000 | 3063 | 9135 | 20 / 25 | 1~200 | 126 |
| JHM31-3150 | 3218 | 9392 | 20 / 25 | 1~160 | 128 |
| JHM31-3500 | 3462 | 11220 | 20 / 25 | 1~120 | 138 |
| JHM31-4000 | 4155 | 12481 | 20 / 25 | 1~118 | 154 |
| JHM31-4500 | 4524 | 13508 | 20 / 25 | 1~112 | 158 |
| JHM31-5000 | 4828 | 12387 | 16 / 20 | 1~112 | 145 |
No matching models. The search only covers models that meet the torque/speed condition; clear the condition to search all models. Tell us the torque, speed and mounting interface you need and ask about a custom build.
Showing 5 of 44 models
Click a model to see its full data. Converted values; the metric values govern.
Ratings: rated torque is the value at rated pressure, not the output at maximum pressure; maximum pressure is not a continuous working pressure. The speed range is the permissible speed band; torque and speed cannot both be at their upper limits. Weight is the motor weight, the same within a series; distributor weights are listed separately (see below).
Model code
What each part of the model code means
Example: JHM6-500B
JHM6-500B
- JHMJST crankshaft and connecting-rod low-speed high-torque hydraulic motor
- 6Series number; all models in a series share the same outline and size
- 500Displacement (ml/r)
- BOutput shaft: no letter = standard straight-sided external spline shaft, B = parallel key shaft, I = internal spline shaft (minor-diameter centred)
- If the distributor type is not stated when ordering, the standard configuration is supplied; please state any special requirement when ordering.
- The motor is reversible, and the output shaft can take some radial and axial load; please confirm the permissible values for your duty.
JHM construction
Crankshaft and connecting-rod design
Five pistons drive the eccentric crankshaft round through connecting rods, and the flat compensating valve plate feeds each cylinder in turn with the crank angle; the connecting rods run on rollers on the crankshaft.
- Eccentric crankshaft and five-piston design with a low excitation frequency, for quiet running
- New-type sealing rings between piston and cylinder, for high volumetric efficiency
- High power-to-weight ratio, with relatively small size and weight
The animation uses JHM16 to explain the construction. In the section, red is high-pressure oil and blue is return oil; oil passages and bearings are schematic. Refer to the data table and the matching drawings for a specific model.
Distributors
Distributor port faces
The port faces used by each series are shown below; if none is stated when ordering, the standard configuration is supplied. Click an image to enlarge it.
Custom builds
Mainly custom-built, designed around your machine
The catalog models are a starting point for selection. Each item below can be designed to the torque, speed and mounting conditions of your equipment.
Shaft & mounting
- Straight-sided external spline, parallel key and internal spline shafts
- Mounting pilot and flange
- Interfaces to gearboxes and winches
Distributor & valves
- D31–D250 port faces
- Integrated valve blocks such as counterbalance and overload valves
- Port and drain port orientation
JHM and JNM catalog data compared
| Item | JHM Series | JNM Series |
|---|---|---|
| Design | Crankshaft and connecting rod (5-cylinder radial star-type motor) | Oscillating-cylinder crankshaft radial piston |
| Catalog models | 44 models · 7 series | 55 models · 8 frame sizes |
| Rated torque | 253.75–13,508 N·m | 235–17,100 N·m |
| Displacement | 64–4,828 ml/r | 59–4,298 ml/r |
| Rated / max. pressure | 16–25 / 20–32 MPa | 20–25 / 25–45 MPa |
Both are five-cylinder low-speed, high-torque motors. The choice depends on torque, speed, pressure, mounting interface and the model already on your machine; see the JNM Series.
Related products
Related motors and drives
For higher output torque, the motor can be combined with a planetary gearbox as a transmission unit or winch.
Selection support
Tell us your duty,
we'll confirm the right motor configuration.
Send the information in the checklist and we will check it against the catalog models or assess a custom design. The product catalog and installation drawing are provided once the model and mounting interface are confirmed.
Please include
- 01Required output torque (continuous and peak) and speed
- 02System pressure, flow and duty cycle
- 03Shaft type, mounting pilot and available space
- 04Distributor and valve requirements, or your current motor model