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Ruland Aluminium Flexible Clamp Style Coupler 25.4 mm Outside Diameter 8 mm Bore Size 31.8 mm Length PCMR25-8-8-A

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Ruland Aluminium Flexible Clamp Style Coupler 25.4 mm Outside Diameter 8 mm Bore Size 31.8 mm Length PCMR25-8-8-A

Name: Ruland Aluminium Flexible Clamp Style Coupler 25.4 mm Outside Diameter 8 mm Bore Size 31.8 mm Length PCMR25-8-8-A
Brand: Ruland
SKU: 180802
Price: 56.87 USD
Availability: InStock

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Category Mechanical Power Transmission Coupler Brand Ruland Condition New

Specifications

Country of Origin	United States
Screw Size	M4
Brand	Ruland
Material	Aluminium
Length	31.8mm
Model	PCMR25-8-8-A
Maximum Speed	6000rpm
Number of Beams	4
Outside diameter	25.4mm
Maximum Operating Temperature	107°C
Minimum Operating Temperature	-40°C
Torque Rating	3.73Nm
Standards/Approvals	REACH, RoHS3, DIN 912 12.9
Bore Size A	8mm
Moment of Inertia	3.394 x 10-6 kg/m²
Misalignment - Angular	3°
Misalignment - Parallel	0.38mm
Misalignment - Axial	0.25mm
Ruland, 25.4 mm OD 8 mm, 31.8 mm Length 8 mm CouplerBrand	Ruland

Key Features

Constructed from aluminium for lightweight and durability.
Clamp style fixing provides secure torque transmission with zero backlash.
Supports maximum speed up to 6000 rpm for high-speed applications.
Designed for a torque rating of 3.73 Nm, suitable for medium-duty rotary power transfer.
Allows axial, parallel, and angular misalignment reducing system stresses.
Operating temperature range from -40°C up to 107°C for versatile environmental use.
Four-beam flexible design ensures torsional rigidity and vibration damping.
Complies with REACH, RoHS3, and DIN 912 12.9 standards for quality and safety.

Product Description

Ruland PCMR25-8-8-A aluminium flexible clamp style coupler is engineered for precision mechanical power transmission where high torque capacity, speed, and misalignment tolerance are required. The rigid one-piece aluminium construction eliminates mechanical joints for improved reliability and zero backlash torque transmission.

This clamp style coupler features four flexible beams allowing up to 3° angular, 0.38 mm parallel, and 0.25 mm axial misalignment, minimizing stress on connected shafts and components. It is suitable for high-speed machinery with a maximum operating speed of 6000 rpm and torque rating of 3.73 Nm.

Capable of operating in temperature ranges from -40°C to 107°C, this coupling is ideal for industrial, laboratory, construction, HVAC, manufacturing, and automation applications including encoders, stepper motors, robotics, servo drives, pumps, valves, and fans.

The product meets stringent standards such as REACH and RoHS3 environmental compliances along with DIN 912 12.9 screw size specifications ensuring high quality and durability. The clamp fixing style secures shafts with precision using socket head cap screws.

Aluminium construction for strength and light weight. Clamp style fixing ensures secure and rigid connection. Flexible beam design tolerates shaft misalignments. High speed rating suitable for dynamic machinery. Compliance with environmental and mechanical standards.

Operates in wide temperature range -40°C to 107°C. Suitable for robotics, pumps, encoders, and servo motors. Zero backlash for precise rotational accuracy.

The set contains one Ruland PCMR25-8-8-A aluminium flexible clamp style coupler with 25.4 mm outside diameter, 8 mm bore size, and 31.8 mm length. This coupling is manufactured in the United States with quality craftsmanship.

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