R+W
R+W BK3 Bellows Coupling - 20mm Bore
Model: BK3-20
R+W BK3-20 Bellows coupling — BK3 series, 0.7874" bore, Finished Bore, Stainless Steel Bellows / Aluminum Hubs, 80 lb-in nominal torque, 8000 max RPM.
Technical Specifications
| Coupling Type | Bellows |
| Series/Size | BK3 |
| Max Bore (in) | 0.7874 |
| Bore Type | Finished Bore |
| Exact Bore (in) | 0.7874 |
| Material | Stainless Steel Bellows / Aluminum Hubs |
| Nominal Torque (in-lbs) | 80 |
| Max RPM | 8000 |
| Max Bore Mm | 20 |
| Max Bore Display | 20mm |
| Max Bore Source | converted from mm (unit confirmed by this record's own name field) via mm ÷ 25.4 = in |
| Exact Bore Mm | 20 |
| Exact Bore Display | 20mm |
| Exact Bore Source | converted from mm (unit confirmed by this record's own name field) via mm ÷ 25.4 = in |
Manufacturer
R+W
R+W Coupling Technology — German manufacturer of precision bellows, disc, jaw, and miniature couplings for servo motor and automation applications. Known for high torsional stiffness and zero backlash.
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