Ruland Beam Coupling Coupler 25.4mm Outside Diamter
- RS Stock No.:
- 4779895
- Mfr. Prt No.:
- PCMR25-8-6-A
- Brand:
- Ruland
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 4779895 |
| Product description | Ruland Beam Coupling Coupler 25.4mm Outside Diamter |
| Manufacturer / Brand | Ruland |
| Manufacturer part number | PCMR25-8-6-A |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 4779895 |
| Product description | Ruland Beam Coupling Coupler 25.4mm Outside Diamter |
| Manufacturer / Brand | Ruland |
| Manufacturer part number | PCMR25-8-6-A |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Nov 7, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Country of Origin: US
Product Details
Aluminium Flexible Shaft Couplings
Designed to perform where higher speeds, greater misalignment, and limited lubrication would exceed the capabilities of other couplings. Each coupling is manufactured as one piece, thereby eliminating mechanical joints and possible failure points.Two fixing styles available:,Typical applications include encoders, stepper motors, robotics, measuring instruments, servo systems, pumps, valves, fans etc., (i) Set Screw style is secured using one grub-screw per shaft (staggered at 120°) , (ii) Clamp style fixing uses one socket head cap screw per shaft.
Note
The coupling illustrated shows the Clamp style fixing.
Constant velocity couplings with high torque capacity and zero backlash
Torsionally rigid one-piece construction
Not temperature sensitive
High or low speed operation and reversible
No lubrication required
Up to 3° of axial misalignment allowable
Specifications
| Attribute | Value |
| Brand | Ruland |
| Bore A | 8 mm |
| Coupling Types | Beam Coupling |
| Bore B | 6 mm |
| Outside Diameter | 25.4 mm |
| Length | 31.8 mm |
| Fastening | Clamp |
| Torque Rating | 3.73 Nm |
| Torsional Stiffness | 1.57 °/Nm |
| Misalignment - Angular | 3 ° |
| Misalignment - Parallel | 0.381 mm |
| Misalignment - Axial | 0.254 mm |
| Material | Aluminium |
