Ruland, 1.75 in OD 21 mm, 2.75 in Length 20 mm Beam Coupling
- RS Stock No.:
- 801-047
- Mfr. Part No.:
- ROCMD44-21-20-AN
- Brand:
- Ruland
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Subtotal (1 unit)*
£179.94
(exc. VAT)
£215.93
(inc. VAT)
FREE delivery for orders over £60.00
Stocked by manufacturer
- Ready to ship from 22 July 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £179.94 |
*price indicative
- RS Stock No.:
- 801-047
- Mfr. Part No.:
- ROCMD44-21-20-AN
- Brand:
- Ruland
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Ruland | |
| Product Type | Beam Coupling | |
| Outside Diameter | 1.75in | |
| Length | 2.75in | |
| Maximum Speed | 6000rpm | |
| Torque Rating | 12.99nm | |
| Moment of Inertia | 62.151 x10⁻⁰⁶ kg-m² | |
| Misalignment - Angular | 6° | |
| Number of Beams | 6 | |
| Misalignment - Parallel | 1.4mm | |
| Style | Clamp | |
| Misalignment - Axial | 0.64mm | |
| Bore Size A | 21mm | |
| Minimum Operating Temperature | -40°C | |
| Bore Size B | 20mm | |
| Material | Aluminium | |
| Series | ROCMD | |
| Maximum Operating Temperature | 107°C | |
| Standards/Approvals | RoHS3 | |
| Screw Size | M6 | |
| Select all | ||
|---|---|---|
Brand Ruland | ||
Product Type Beam Coupling | ||
Outside Diameter 1.75in | ||
Length 2.75in | ||
Maximum Speed 6000rpm | ||
Torque Rating 12.99nm | ||
Moment of Inertia 62.151 x10⁻⁰⁶ kg-m² | ||
Misalignment - Angular 6° | ||
Number of Beams 6 | ||
Misalignment - Parallel 1.4mm | ||
Style Clamp | ||
Misalignment - Axial 0.64mm | ||
Bore Size A 21mm | ||
Minimum Operating Temperature -40°C | ||
Bore Size B 20mm | ||
Material Aluminium | ||
Series ROCMD | ||
Maximum Operating Temperature 107°C | ||
Standards/Approvals RoHS3 | ||
Screw Size M6 | ||
- COO (Country of Origin):
- US
The Ruland coupling is a six beam design that accommodates varying misalignment tolerances with its unique construction. It is engineered to provide a strong and reliable connection for shaft alignment, Ideal for precision applications.
Bores of 21mm and 20mm enable versatility for different shaft sizes
Constructed from 7075 aluminium for lightweight attributes and reduced inertia
Features two sets of three spiral cuts for enhanced flexibility in misalignment
Tested beyond DIN 912 12.9 standards, ensuring maximum torque capacity
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