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Description:
Ruland part number MDCDK51-25-25-A is an aluminum double disc coupling with 25mm x 25mm bores with keyways. Download a 2D/3D CAD file or purchase the MDCDK51-25-25-A directly from the manufacturer.
Attributes
| Key ^ | Value |
|---|---|
| Angular Misalignment | 2.0? |
| Axial Motion | 0.64 mm |
| B1 Max Shaft Penetration, B2 Max Shaft Penetration | 30.3 mm |
| Balanced Design, Full Bearing Support Required?, Zero-Backlash? | Yes |
| Bore (B1), Small Bore (B2) | 25 mm |
| Bore Tolerance | +0.03 mm / -0.00 mm |
| Country of Origin | USA |
| Dynamic Torque Non-Reversing | 19.80 Nm |
| Dynamic Torque Reversing | 9.90 Nm |
| Finish Specification | Sulfuric Anodized MIL-A-8625 Type II, Class 2 and ASTM B580 Type B Black Anodize |
| Forged Clamp Screw | M5 |
| Hex Wrench Size | 4.0 mm |
| Hub Width (LH) | 20.55 mm |
| Keyway (K1), Keyway (K2) | 8 mm |
| Length (L) | 64.0 mm |
| Manufacturer | Ruland Manufacturing |
| Material Specification | Hubs and Center Spacer: 2024-T351 Aluminum Bar |
| Maximum Speed | 10,000 RPM |
| Moment of Inertia | 9.6644 x 10 |
| Note 1 | Stainless steel hubs are available upon request. |
| Note 2 | Torque ratings are at maximum misalignment. |
| Note 3 | Performance ratings are for guidance only. The user must determine suitability for a particular application. |
| Note 4 | Torque ratings for the couplings are based on the physical limitations/failure point of the disc springs. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the disc springs. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the rated torque of the disc springs. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance. |
| Number of Screws | 2 ea |
| Outer Diameter (OD) | 50.8 mm |
| Parallel Misalignment | 0.30 mm |
| Recommended Shaft Tolerance | +0.000 mm / -0.013 mm |
| Screw Finish | Black Oxide |
| Screw Material | Alloy Steel |
| Seating Torque | 9.5 Nm |
| Static Torque | 39.6 Nm |
| Tariff Code | 8483.60.8000 |
| Temperature | -40?F to 200?F (-40?C to 93?C) |
| Torsional Stiffness | 67.2 Nm/Deg |
| UNSPC | 31163008 |
| UPC | 634529177433 |
| Weight (lbs) | 0.533300 |