Ruland, 25 mm OD 8 mm, 31.8 mm Length 7 mm Flexible Coupling
- RS Stock No.:
- 604-257
- Mfr. Part No.:
- PSMR25-8-7-SS
- Manufacturer:
- Ruland
Subtotal (1 unit)*
MYR661.95
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- Shipping from 10 March 2026
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Units | Per Unit |
|---|---|
| 1 + | MYR661.95 |
*price indicative
- RS Stock No.:
- 604-257
- Mfr. Part No.:
- PSMR25-8-7-SS
- Manufacturer:
- Ruland
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Ruland | |
| Product Type | Flexible Coupling | |
| Outside Diameter | 25 mm | |
| Length | 31.8mm | |
| Maximum Speed | 6000rpm | |
| Torque Rating | 4.63Nm | |
| Moment of Inertia | 9.275 x 10-6 kg/m² | |
| Number of Beams | 4 | |
| Misalignment - Angular | 3.0° | |
| Misalignment - Parallel | 0.38mm | |
| Style | Set Screw | |
| Misalignment - Axial | 0.25mm | |
| Bore Size B | 7mm | |
| Minimum Operating Temperature | -40°C | |
| Bore Size A | 8mm | |
| Material | 303 Stainless Steel | |
| Series | PSMR25 | |
| Maximum Operating Temperature | 176°C | |
| Standards/Approvals | RoHS3, REACH, DIN 912 12.9 | |
| Screw Size | M4 | |
| Select all | ||
|---|---|---|
Brand Ruland | ||
Product Type Flexible Coupling | ||
Outside Diameter 25 mm | ||
Length 31.8mm | ||
Maximum Speed 6000rpm | ||
Torque Rating 4.63Nm | ||
Moment of Inertia 9.275 x 10-6 kg/m² | ||
Number of Beams 4 | ||
Misalignment - Angular 3.0° | ||
Misalignment - Parallel 0.38mm | ||
Style Set Screw | ||
Misalignment - Axial 0.25mm | ||
Bore Size B 7mm | ||
Minimum Operating Temperature -40°C | ||
Bore Size A 8mm | ||
Material 303 Stainless Steel | ||
Series PSMR25 | ||
Maximum Operating Temperature 176°C | ||
Standards/Approvals RoHS3, REACH, DIN 912 12.9 | ||
Screw Size M4 | ||
- COO (Country of Origin):
- US
The Ruland Four beam coupling is designed to provide superior performance in demanding applications. Machined from high-quality 303 stainless steel, it features a set screw style that securely holds shafting while allowing for precise alignment. The unique design incorporates two sets of spiral cuts, which enhances torque capacity and minimizes windup, making it suitable for high-speed operations. With the ability to operate efficiently at speeds of up to 6,000 RPM, this coupling ensures zero backlash and offers a balanced design, reducing vibrations during operation. Manufactured under stringent controls in the USA, this product meets rigorous industry standards for quality and durability, presenting a reliable solution for various mechanical connections.
Constructed from durable 303 stainless steel for enhanced strength
Set screw design allows for firm and adjustable shaft locking
Optimized for high-torque applications, ensuring reliable power transmission
Zero-backlash design guarantees precision in motion transfer
Designed for high-speed operations up to 6,000 RPM
Balanced construction reduces operational vibrations
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