HMR series · heavy-duty · 210 bar
HMR4 helical rotary actuators
14 sizes from 1,920 to 83,600 Nm at 210 bar, with 180° / 360° rotations. The HMR4 range is built for continuous high-load duties on mining, drilling and material-handling equipment, where the same actuator is specified across foot, front-flange and rear-flange builds.
Every unit is assembled to order, pressure-tested before shipment, and quoted against your mounting drawing rather than off a stock list.
Sizes in the HMR4 range
Pick the size from your required output torque, then confirm rotation, mounting and shaft on the model page. Sizes without a page are quoted on request.
| Model | Driving torque | Rotation | Page |
|---|---|---|---|
| HMR4-200 | 1,920 Nm | 180° / 360° | HMR4-200 |
| HMR4-280 | 2,820 Nm | 180° / 360° | HMR4-280 |
| HMR4-300 | 3,100 Nm | 180° / 360° | HMR4-300 |
| HMR4-470 | 4,750 Nm | 180° / 360° | HMR4-470 |
| HMR4-500 | 5,100 Nm | 180° / 360° | HMR4-500 |
| HMR4-750 | 7,340 Nm | 180° / 360° | HMR4-750 |
| HMR4-1000 | 10,700 Nm | 180° / 360° | HMR4-1000 |
| HMR4-1150 | 11,500 Nm | 180° / 360° | HMR4-1150 |
| HMR4-1400 | 14,100 Nm | 180° / 360° | HMR4-1400 |
| HMR4-1800 | 18,600 Nm | 180° / 360° | HMR4-1800 |
| HMR4-2500 | 24,300 Nm | 180° / 360° | HMR4-2500 |
| HMR4-2850 | 28,500 Nm | 180° / 360° | On request |
| HMR4-4200 | 42,900 Nm | 180° | HMR4-4200 |
| HMR4-8300 | 83,600 Nm | 180° / 360° | HMR4-8300 |
How the HMR4 order code works
Pattern: HMR4-{spec}-{angle}-{mount}-{output}-{valve}. Worked example: HMR4-500-180-FT-2F-CS.
| Mounting | FT — Foot / FF — Front flange / RF — Rear flange |
|---|---|
| Output shaft | 1F / 2F |
| Valve options | NV / CB / CS |
| Rotation | 180° / 360° |
HMR4 is rated at 210 bar continuous; at this torque class the tie-rod clearance and bracket stiffness matter as much as the port size. HMR4 is offered in 180° and 360° as standard rotations, with the same rated performance across FT, FF and RF mounting.
What this range is compared with
Across the HMR4 sizes we hold comparable references for 8 Helac models, 20 HKS models, 9 Moveco models, 4 Sungji models. These are torque-class references used to route an enquiry, not validated substitutions — mounting pattern, shaft and ports are confirmed against your unit before quoting.
Other HMR series
Same helical design, different mounting interface and pressure rating. If your bracket does not match HMR4, one of these usually does.
HMR4 questions
What is the difference between HMR4 and the other HMR series?
HMR4 is the heavy-duty range: continuous high-load duties on mining, drilling and material-handling equipment, where the same actuator is specified across foot, front-flange and rear-flange builds. The series is defined by the mounting interface and the pressure rating, not by torque alone — HMR4 is rated at 210 bar with 180° / 360° rotations. Other HMR series cover the same torque band with a different mount, so the machine bracket decides which one applies.
How many sizes does HMR4 cover?
14 sizes, from HMR4-200 at 1,920 Nm to HMR4-8300 at 83,600 Nm. Every size is built to order against the same housing design, so the torque step between sizes is fixed and you pick the step that covers your load with margin.
Can HMR4 replace another make's actuator?
We supply HMR4 as an alternative where the torque class and mounting interface line up, but we do not claim a verified drop-in for any other make. The comparable references we hold for this series are Helac (8 models), HKS (20 models), Moveco (9 models), Sungji (4 models); mounting pattern, shaft and port details are confirmed against your unit before quoting.
Send the torque, angle and mounting drawing
We confirm the HMR4 size against your load and bracket, then quote the build and a delivery date.
Request a quote for HMR4