FWA21 Slewing Drive
Full-throat worm slewing drives with cup seal. A full-throat worm with the face sealed by a cup seal instead of a lip seal, for a better sealing arrangement up to IP65 against dust and water. Single or double worm (double the torque), self-locking or non-self-locking, metric or inch mounting.
Performance
| Model | FWA21 |
|---|---|
| Series | FWA Series |
| Type | Full-throat worm slewing drives with cup seal |
| Max. output torque | 28,700 N·m (21,169 lbf-ft) |
| Max. tilting moment | 203,000 N·m (149,733 lbf-ft) |
| Holding torque | 107,000 N·m (78,923 lbf-ft) |
| Max. axial load | 1,600 kN (359,680 lbf) |
| Max. radial load | 650 kN (146,120 lbf) |
| Gear ratio | 90:1 |
| Tracking precision | ≤ 0.1° |
| Backlash | 0.1° |
| Unit weight | 374.8 lb (170 kg) |
Maximum ratings. Our engineers will confirm the drive for your duty cycle.
Load chart
Tilting moment vs. axial load. Click to enlarge.
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 Quote8 FWA21 configurations 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.
FWA21-45M-BH-LCustomer-supplied gearbox or motor
| Motor / gearbox | Supplied by customer; drive is built with the matching input interface |
|---|---|
| Self-locking | No |
| Output speed | < 1.5 rpm |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Left hand |
| Ratio | 45:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| 3D model | Available on request |
FWA21-45M-BH-RCustomer-supplied gearbox or motor
| Motor / gearbox | Supplied by customer; drive is built with the matching input interface |
|---|---|
| Self-locking | No |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Right hand |
| Ratio | 45:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| 3D model | Available on request |
FWA21-90B-BH-R-C005Customer-supplied gearbox or motor
| Motor / gearbox | Supplied by customer; drive is built with the matching input interface |
|---|---|
| Output speed | < 1.5 rpm |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Right hand |
| Ratio | 90:1 |
| Mounting threads | Inch (UNC) |
| Mounting holes | Blind threaded holes on inner and outer rings |
| Version | Customer-specific variant |
| 3D model | Available on request |
FWA21-90M-BH-LCustomer-supplied gearbox or motor
| Motor / gearbox | Supplied by customer; drive is built with the matching input interface |
|---|---|
| Output speed | < 1.5 rpm |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Left hand |
| Ratio | 90:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| 3D model | Available on request |
FWA21-90M-BH-RCustomer-supplied gearbox or motor
| Motor / gearbox | Supplied by customer; drive is built with the matching input interface |
|---|---|
| Output speed | < 1.5 rpm |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Right hand |
| Ratio | 90:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| 3D model | Available on request |
FWA21-45M-BH-L-160-AHydraulic motor
| Hydraulic motor | 160 cc/rev displacement |
|---|---|
| Motor ports | away from worm housing |
| Hydraulic pressure | 9 MPa (1,305 psi) |
| Hydraulic flow | 20 L/min (5.3 gpm) |
| Self-locking | No |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Left hand |
| Ratio | 45:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| 3D model | Available on request |
FWA21-45M-BH-R-BM3Y-315Z1-D-C005Hydraulic motor with brake
| Hydraulic motor | 315 cc/rev displacement |
|---|---|
| Brake | Integrated hydraulic brake (spring applied, pressure released) |
| Brake torque | 415 N·m |
| Motor ports | toward bottom mounting face |
| Hydraulic pressure | 17.5 MPa (2,538 psi) |
| Hydraulic flow | 30 L/min (7.9 gpm) |
| Self-locking | No |
| Output speed | 1.85 rpm |
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Right hand |
| Ratio | 45:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| Version | Customer-specific variant |
| Counterbalance valve | Fitted to the hydraulic motor (Z1, recommended) |
| 3D model | Available on request |
FWA21-90M-BH-R-SP100S-MF2-25Planetary gearbox (servo motor ready)
| Motor / gearbox make | WITTENSTEIN |
|---|---|
| Input | 6B spline bore (21.8 mm) |
| Worm far end | Hex head (manual drive) |
| Worm hand | Right hand |
| Ratio | 90:1 |
| Mounting threads | Metric |
| Mounting holes | Blind threaded holes on inner and outer rings |
| 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.