HMR series · through-shaft straddle · 210 bar
HMR6 helical rotary actuators
5 sizes from 1,800 to 6,780 Nm at 210 bar, with 220° / 180° rotations. The HMR6 range is built for two-sided drive points on one axis, where the shaft passes right through the housing and both ends drive a load.
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 HMR6 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.
How the HMR6 order code works
Pattern: HMR6-{spec}-{angle}-{valve}. Worked example: HMR6-280-220-CB.
| Mounting | FT — Foot, straddle only (standard) |
|---|---|
| Output shaft | DS |
| Valve options | NV / CB / CS |
| Rotation | 220° / 180° |
HMR6 is rated at 210 bar continuous; the straddle mount means both bearing faces are loaded, so bracket alignment is checked before quoting. 220° is the standard rotation on HMR6; 180° is a special angle that has to be confirmed by engineering.
What this range is compared with
Across the HMR6 sizes we hold comparable references for 4 Helac models, 3 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 HMR6, one of these usually does.
HMR6 questions
What is the difference between HMR6 and the other HMR series?
HMR6 is the through-shaft straddle range: two-sided drive points on one axis, where the shaft passes right through the housing and both ends drive a load. The series is defined by the mounting interface and the pressure rating, not by torque alone — HMR6 is rated at 210 bar with 220° / 180° 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 HMR6 cover?
5 sizes, from HMR6-180 at 1,800 Nm to HMR6-680 at 6,780 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 HMR6 replace another make's actuator?
We supply HMR6 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 (4 models), Sungji (3 models); mounting pattern, shaft and port details are confirmed against your unit before quoting.
Send the torque, angle and mounting drawing
We confirm the HMR6 size against your load and bracket, then quote the build and a delivery date.
Request a quote for HMR6