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Product Specifications:
| Item | Jaw Coupling Hub |
| B1 Max Shaft Penetration | 20.8 mm |
| Balanced Design | Yes |
| Bore (b1) | 17 mm |
| Bore Tolerance | -0 mm to +0.03 mm |
| Fail Safe | Yes |
| Finish | Bright |
| Finish Specification | Bright, No Plating |
| Forged Set Screw | M6 |
| Full Bearing Support Required | Yes |
| Hex Wrench Size | 3 mm |
| Hub Width (lh) | 20.83 mm |
| Keyway (k) | 5 mm |
| Length (l) | 2.4" |
| Material Specification | 2024-T351 Aluminum Bar |
| Max. Speed | 8000 RPM |
| Misalignment | Misalignment Ratings Vary With Insert Selection |
| Moment Of Inertia | 4.504 x 10 |
| Number Of Screws | 2 EA 90° Apart |
| Outer Diameter | 2" |
| Recommended Gap Between Hubs | 0.05" |
| Recommended Inserts | JD32/51-98R |
| Recommended Shaft Tolerance | -0.013 mm to 0 mm |
| Screw Finish | Black Oxide |
| Screw Material | Alloy Steel |
| Seating Torque | 7.2 N-m |
| Temperature | -10°F to 180°F |
| Torque Specifications | Torque Ratings Vary With Insert Selection |
| Zero-backlash | Yes |
Shipping Info:
| Ship weight (kg) | 0.12 |
| Ship height (cm) | 5.08 |
| Ship length (cm) | 6.1 |
| Ship width (cm) | 5.08 |
| Country of Origin | US |
Product Variants
| Model | Outside Dia. | Bore Dia. | Keyway Size | Coupling Size | Bore Tolerance | Size | Length Through Bore | Hub Projection | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| MJSC25-10-A | 25.4 mm | 10 mm | 3 mm x 1.4 mm | Mjs25 | 0 mm to 0.05 mm | MJSC25 | 11.9 mm | 11.9 mm | €71.42 | |
| MJSC25-12-A | 25.4 mm | 12 mm | 3 mm x 1.8 mm | Mjs25 | 0 mm to 0.05 mm | MJSC25 | 11.9 mm | 11.9 mm | €70.53 | |
| MJSC25-8-A | 25.4 mm | 8 mm | - | - | - | MJSC25 | - | - | €71.42 | |
| MJSC33-10-A | 33.3 mm | 10 mm | 3 mm x 1.4 mm | MJS33 | 0 mm to 0.05 mm | MJSC33 | 15 mm | 15 mm | €98.05 | |
| MJSC33-12-A | 33.3 mm | 12 mm | 4 mm x 1.8 mm | MJS33 | 0 mm to 0.05 mm | MJSC33 | 15 mm | 15 mm | €98.05 | |
| MJSC33-14-A | 33.3 mm | 14 mm | 5 mm x 2.3 mm | MJS33 | 0 mm to 0.05 mm | MJSC33 | 15 mm | 15 mm | €98.05 | |
| MJSC33-15-A | 33.3 mm | 15 mm | 5 mm x 2.3 mm | MJS33 | 0 mm to 0.05 mm | MJSC33 | 15 mm | 15 mm | €98.05 |
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RULAND MANUFACTURING MJSC51-17-A 17mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 50.8mm OD, 20.8mm Lg.
€149.18 /unit

