SEW W Series SPIROPLANĀ® Right-Angle Gearmotors
The SEW-EURODRIVE W Series SPIROPLANĀ® right-angle gearmotors deliver ultra-compact, high-efficiency power transmission designed specifically for small performance ranges. Featuring proprietary wear-free SPIROPLANĀ® gearing with steel-on-steel meshing, these gear units offer whisper-quiet operation and extreme longevity. Housed in lightweight aluminum casings, the W series covers a torque spectrum spanning from 12 Nm up to 180 Nm. Their compact dimensions, low weight, and life-long lubrication make SEW SPIROPLANĀ® gearmotors the ideal choice for material handling, light conveyors, assembly automation, and food industry machinery.
Available W Series Variants (Mounting & Shaft Options)
The W series SPIROPLANĀ® gear unit family can be customized into various mounting configurations and shaft arrangements to suit your mechanical layout. Specify your variant when requesting a quote (e.g., WA30, WAF37, or WF20):
- W / W..R: Foot-mounted solid shaft SPIROPLANĀ® gear unit.
- WA / WA..R: Hollow shaft version with keyway connection.
- WF / WF..R: Flange-mounted solid shaft version (B5 flange).
- WAF / WAF..R: Flange-mounted hollow shaft version.
- WT / WT..R: Hollow shaft with integrated TorqLOCĀ® keyless hollow shaft clamping system.
W Series Base Models & Technical Specifications
| Base Model | Max. Torque (Nm) | Gear Ratio (i) | Power Range (kW) | Details |
|---|---|---|---|---|
| W 10 | Up to 25 | 3.91 ā 75.00 | 0.09 ā 0.37 | Data Card |
| W 20 | Up to 45 | 3.91 ā 100.00 | 0.09 ā 0.55 | Data Card |
| W 30 | Up to 70 | 3.91 ā 100.00 | 0.09 ā 1.10 | Data Card |
| W 37 | Up to 110 | 3.50 ā 100.00 | 0.12 ā 1.50 | Data Card |
| W 47 | Up to 180 | 3.50 ā 100.00 | 0.12 ā 2.20 | Data Card |
Technical FAQs: SEW W Series
Unlike standard worm gears that rely on sliding friction between bronze and steel, SPIROPLANĀ® right-angle gears feature special, wear-free special steel gearing. This steel-on-steel tooth engagement delivers significantly higher efficiency, lower operating temperatures, and exceptional long-term reliability in a very small footprint.
Yes. Thanks to their aluminum housing and wear-free gearing, SEW W Series gear units (W10 to W37) are filled at the factory with high-grade synthetic lubricant and sealed for life. They require no oil changes under standard operating conditions, making them ideal for hard-to-access installations.
To ensure complete compatibility with your setup, send us a clear photo of your SEW nameplate displaying the 10-digit Serial Number. Our technical team will decode the exact ratio, mounting orientation, shaft diameter, and motor frame dimensions to deliver a 100% plug-and-play unit.
