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Ruland 25.4 mm Outer Diameter Aluminium Clamp Style Bellows Coupler 33.3 mm Length 6.8 Nm Torque Rating MBC25-12-6-A

Name: Ruland 25.4 mm Outer Diameter Aluminium Clamp Style Bellows Coupler 33.3 mm Length 6.8 Nm Torque Rating MBC25-12-6-A
Brand: Ruland
SKU: 332740
Price: 102.3 USD
Availability: InStock

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Category Mechanical Power Transmission Couplers Brand Ruland Condition New

Specifications

Country of Origin	United States
Screw Size	M3
Brand	Ruland
Length	33.3mm
Model	MBC25-12-6-A
Maximum Speed	10000rpm
Maximum Operating Temperature	93°C
Minimum Operating Temperature	-40°C
Torque Rating	6.8Nm
Standards/Approvals	RoHS3, REACH, DIN 912 12.9
Hub Material	Aluminium
Bore Size A	12mm
Moment of Inertia	2.703 x 10-6 kg/m²
Misalignment - Angular	1.5°
Misalignment - Parallel	0.1mm
Misalignment - Axial	0.3mm
Bellows Material	Stainless Steel
Bore Size B	6mm

Key Features

The coupler accommodates 12 mm and 6 mm bore sizes for shaft connections.
Maximum operating speed is 10,000 rpm with low moment of inertia of 2.703 x 10-6 kg/m².
It tolerates up to 1.5° angular misalignment, 0.1 mm parallel misalignment, and 0.3 mm axial misalignment.
The bellows are made from stainless steel, providing torsional rigidity and vibration damping.
Suitable for precise positioning applications like stepper servos and encoders.
Hardware meets DIN 912 12.9 standard, with M3 screw size for secure clamp connections.
Operating temperature range is -40°C to 93°C for varied industrial environments.
Complies with RoHS3 and REACH environmental standards.

Product Description

Ruland MBC25-12-6-A is a precision-engineered bellows coupler designed for applications requiring high torsional rigidity and precise shaft alignment. The aluminium clamp-style hubs with an outer diameter of 25.4 mm and a length of 33.3 mm support shaft bore sizes of 12 mm and 6 mm respectively. Featuring stainless steel bellows, the coupling allows for axial, parallel, and angular misalignments while maintaining zero backlash and balanced operation.

With a maximum speed capacity of 10,000 rpm and a torque rating of 6.8 Nm, this coupler is ideal for servo, stepper motor, and encoder drive applications where vibration reduction and accurate positioning are critical. Its moment of inertia is low at 2.703 x 10-6 kg/m², enhancing dynamic response.

The bellows design flexes under misalignment but remains rigid in torsion, enabling durability and long service life. The stainless steel bellows combined with anodized aluminium hubs enable operation between -40°C and 93°C in demanding industrial environments. The hardware meets or exceeds DIN 912 12.9 specifications, using M3 screws for robust assembly.

Ruland's manufacturing process utilizes solid bar stock exclusively sourced from North American mills, assuring material quality and precision. The coupler complies with environmental directives RoHS3 and REACH, supporting sustainable manufacturing practices.

This mechanical power transmission coupler is widely used in laboratory, industrial automation, robotics, and manufacturing machinery applications requiring flexible yet precise shaft connection.

The coupler accommodates 12 mm and 6 mm bore sizes for shaft connections. Maximum operating speed is 10,000 rpm with low moment of inertia of 2.703 x 10-6 kg/m². Tolerates up to 1.5° angular, 0.1 mm parallel, and 0.3 mm axial misalignment.

Stainless steel bellows provide flexible torsional rigidity. Ideal for precise positioning stepper servo and encoder applications. Hardware meets DIN 912 12.9 standard, with M3 screw size. Operates safely between -40°C and 93°C.

RoHS3 and REACH compliant for environmental safety. Manufactured in the United States with high-quality materials. Explore more Mechanical Power Transmission Couplers and flexible couplings in EnvMart’s extensive catalogue for industrial applications.