RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Jaw Coupling Hub: MJC57 Coupling Size, 57.2 mm Outside Dia, Metric

SKU 3G-OTH-134165

Brand

RULAND MANUFACTURING

Item

Jaw Coupling Hub: MJC57 Coupling Size, 57.2 mm Outside Dia, Metric

Technical Specifications

RULAND MANUFACTURING

Manufacturer Part Number

MJC57-30-A 

Type

Metric, Aluminum 

Outside Dia

57.2 mm 

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Technical Documents

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RULAND MANUFACTURING Products

3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is a Ruland MJC57-30-A jaw coupling hub used for?

The Ruland MJC57-30-A is a zero-backlash curved jaw coupling hub used to connect two shafts in motion-control systems, such as servo motors and encoders. It accommodates misalignment while transmitting torque smoothly. 3G Electric supplies this metric aluminum hub across 14 industrial departments for precision-drive applications.

What are the specifications of the Ruland MJC57-30-A coupling hub?

The Ruland MJC57-30-A is a metric aluminum jaw coupling hub with a 57.2 mm outside diameter. It is part of the MJC57 coupling size family and is designed for zero-backlash curved jaw couplings. 3G Electric sources this genuine Ruland part for worldwide delivery.

Where to buy a Ruland MJC57-30-A coupling hub worldwide?

3G Electric supplies the Ruland MJC57-30-A jaw coupling hub to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order this metric aluminum hub for your motion-control system.

How to select the correct Ruland jaw coupling hub size?

To select the correct Ruland jaw coupling hub, match the outside diameter (57.2 mm for MJC57) and bore size to your shaft dimensions. Ensure the hub material (aluminum) suits your torque and environmental needs. 3G Electric can help interpret your application requirements and source the right Ruland part.

Used in

Common applications for RULAND MANUFACTURING

Automated packaging machinery — Ruland beam couplings (e.g., PSR20-8-5-A) for connecting servo motors to conveyor drive shafts.

CNC machine tools — Ruland rigid couplings (e.g., CLX-4-4-A) for precise alignment of ball screw assemblies.

Robotic arm joints — Ruland Oldham coupling hubs (e.g., OSC16-6-A) for accommodating axial motion in end-effector drives.

Pump and compressor systems — Ruland stainless steel shaft collars (e.g., CL-3-ST) for securing impeller shafts.

Printing press rollers — Ruland clamp-on beam couplings (e.g., PCR18-8-8-A) for synchronizing roller rotation with minimal backlash.

Material handling conveyors — Ruland set screw couplings (e.g., PSMR29-7-7-A) for linking gearboxes to drive rollers.

RULAND MANUFACTURING Products

3G Electric supplies RULAND MANUFACTURING zero-backlash curved jaw coupling hubs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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