Ruland four beam couplings are zero-backlash and have a balanced design for reduced vibration at high speeds up to 6,000 RPM. This MW-series beam coupling is machined from a single piece of stainless steel and features two sets of two spiral cuts allowing for higher torque capacity and lower windup than single beam couplings. It has pure metric outer diameter and length dimensions to fit in a smaller envelope than Ruland P-series beam couplings for easier interchanges with single beam couplings. This coupling is clamp style and has 0.188" x 4mm bores, 0.787" (20.0mm) OD, and 1.102" (28.0mm) length. Stainless steel is used for higher torque capabilities than aluminum versions, however the coupling will have significantly higher inertia. This coupling is best suited for encoders. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. It is RoHS and REACH compliant.
| Bore Dia. | 0.188 in x 4 mm |
|---|---|
| Max. RPM | 6000 RPM |
| Outside Dia. | 0.787 in |
| Overall Length | 1.102 in |
| Length | 1.102 in |
| Material | 303 Stainless Steel |
| Weight | 0.1176 lb |
| Max. Temp. Range (F) | -40°F to 350°F (-40°C to 176°C) |
| Max. Parallel Misalignment (In.) | 0.008 |
| Max. Angular Misalignment | 3 deg |
| Screw Size | M3 |
| Style | Clamp |
| Torsional Stiffness (Deg./In.-Lbs.) | 0.98 Deg/Nm |
| Dynamic Torque Non-Reversing | 1 N-m |
| Static Torque | 2 N-m |
| B2 Shaft Penetration | 13.5 mm |
| Screw Finish | Black Oxide |
| Screw Material | Alloy Steel |
| Recommended Shaft Tolerance | +0.0000 in, -0.0005 in |
| Bore Tolerance | +0.001 in, -0.000 in |
| Number of Screws | 2 ea |
| Measurement Type | Metric, Inch |
| Moment of Inertia | 2.984x10-6 kg-m2 |
| Axial Motion | 0.005 in |
| B1 Shaft Penetration | 0.535 in |
| Screw Seating Torque | 2.1 N-m |
| Dynamic Torque Reversing | 0.5 N-m |
| Fastening Dimensions | Metric |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |