FHB25A Slewing Drive
Heavy-load drives with bronze worm gear. Heavy-load slewing drives with bronze worm-wheel teeth for higher drive torque and scuffing resistance, and two shaft seals (outer and inner ring). Built to withstand large axial dynamic loads; available with two worms and two motors for double the torque.
Performance
| Model | FHB25A |
|---|---|
| Series | FHB Series |
| Type | Heavy-load drives with bronze worm gear |
| Max. output torque | 30,000 N·m (22,128 lbf-ft) |
| Max. tilting moment | 180,000 N·m (132,768 lbf-ft) |
| Max. axial load | 1,500 kN (337,200 lbf) |
| Gear ratio | 94:1 |
| Backlash | 0.15° |
| Unit weight | 551.1 lb (250 kg) |
Maximum ratings. Our engineers will confirm the drive for your duty cycle.

Get this drive
Standard lead time 14–16 weeks; expediting available for an additional charge. Pricing quoted within 1–2 business days. 3D models available on request.
Request a Quote1 FHB25A configuration on file
Drives we have already engineered: with hydraulic motors, DC gear motors, SEW-EURODRIVE or NORD AC gear motors integrated in-house, planetary gearboxes, encoders and brakes, or built to mate with the customer’s own gearbox or motor. Click a configuration to see what it includes. Need something different? New designs are added often.
FHB25A-94M-SR-TMS03-320-D-C005Hydraulic motor
| Hydraulic motor | 320 cc/rev displacement |
|---|---|
| Motor ports | toward bottom mounting face |
| Output speed | < 2.5 rpm |
| Worm far end | Standard end cap |
| Worm hand | Right hand |
| Ratio | 94:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| Version | Customer-specific variant |
| 3D model | Available on request |
Talk to an engineer
Need help selecting the right part? Our engineers will size it, cross it, and quote it — usually within 1–2 business days.
Not in the catalog? We design to your application, with no engineering charge.


