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Ruland Mechanical Power Transmission Coupler 15 mm OD 4 mm Bore 21.8 mm Length Aluminium Hub Set Screw Style MJS15-4-A

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Ruland Mechanical Power Transmission Coupler 15 mm OD 4 mm Bore 21.8 mm Length Aluminium Hub Set Screw Style MJS15-4-A

Name: Ruland Mechanical Power Transmission Coupler 15 mm OD 4 mm Bore 21.8 mm Length Aluminium Hub Set Screw Style MJS15-4-A
Brand: Ruland
SKU: 429308
Price: 23.82 USD
Availability: InStock

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Category Mechanical Power Transmission Coupler Brand Ruland Condition New

Specifications

Country of Origin	our Marlborough
Screw Size	M3
Brand	Ruland
Length	21.8mm
Model	MJS15-4-A
Maximum Speed	8000rpm
Series	MJS15-4-A
Maximum Operating Temperature	82°C
Minimum Operating Temperature	-23°C
Torque Rating	0.92Nm
Standards/Approvals	RoHs and Reach
Hub Material	Aluminium
Bore Size A	4mm
Bellows Material	2024-T351 Aluminium Bar
Bore Size B	3mm

Key Features

Constructed with aluminium hub for durable performance.
Coupler length is 21.8 mm for precise shaft engagement.
Set screw style design provides secure attachment to shafts.
Capable of operating up to a maximum speed of 8000 rpm.
Torque rating of 0.92 Nm suitable for light to medium power transmission.
Operating temperature range from -23°C to 82°C allows versatile environmental use.
Bellows made from 2024-T351 aluminium bar enhances flexibility and strength.
Complies with RoHS and REACH standards ensuring environmental compliance.

Product Description

Ruland MJS15-4-A is a Mechanical Power Transmission Coupler designed for precision shaft coupling with zero backlash. It features a 15 mm outer diameter and a 4 mm bore size with an overall length of 21.8 mm. The coupler uses aluminium hubs and a set screw style for secure attachment to shafts, making it lightweight and low inertia, ideal for applications requiring speeds up to 8,000 RPM.

This coupler is part of a three-piece design consisting of two aluminium hubs and an elastomeric insert known as the spider. This configuration offers flexibility and allows for customization with clamp or set screw hubs, available in various bore sizes. Ruland MJS15-4-A hubs are machined from premium North American bar stock under strict manufacturing standards to ensure consistent quality.

The coupler operates effectively in temperatures ranging from -23°C to 82°C. Its aluminium bellows material (2024-T351 aluminium bar) provides robust performance under mechanical stress while maintaining flexibility. The coupler’s torque rating is 0.92 Nm, suitable for light to medium mechanical power transmission tasks. Hardware uses metric M3 set screws for reliable fastening. This product is RoHS and REACH compliant, supporting environmental and safety regulations.

Durable aluminium hub construction for extended service life. Set screw style offers secure and adjustable shaft connection. Balanced design reduces vibration at high speeds up to 8,000 RPM. Flexible elastomeric spider insert tailored for specific application damping.

Suitable for industrial, manufacturing, and mechanical fluid power transmission systems. Lightweight design decreases system inertia and enhances efficiency.

This Ruland coupler is ideal for use in industrial machinery, laboratory equipment, HVAC motors, and power transmission setups requiring accurate, reliable coupling. Its modular design enables customization across various mechanical applications. For more products in mechanical power transmission, browse the relevant EnvMart categories to find compatible couplers and accessories.