RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Jaw Coupling Hub: MJS51 Coupling Size, 50.8 mm Outside Dia, Metric

The RULAND MANUFACTURING Jaw Coupling Hub, model MJSC51-25-A, is a zero-backlash curved jaw coupling hub in the MJS51 coupling size. It is constructed from metric aluminum with a 50.8 mm outside diameter, designed…

SKU 3G-OTH-134218

Also listed as: MJSC5125A · MJSC51 25 A

Brand

RULAND MANUFACTURING

Item

Jaw Coupling Hub: MJS51 Coupling Size, 50.8 mm Outside Dia, Metric

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

RULAND MANUFACTURING

Manufacturer Part Number

MJSC51-25-A 

Type

Metric, Aluminum 

Outside Dia

50.8 mm 

Technical Documents

No technical documents available for this product.

Request documentation →

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

RULAND MANUFACTURING Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is a RULAND MANUFACTURING MJS51 jaw coupling hub used for?

The RULAND MANUFACTURING MJS51 zero-backlash curved jaw coupling hub is used to connect two shafts in motion-control systems, compensating for minor misalignment while transmitting torque. It is common in packaging, robotics, and conveyor equipment where precision and dampening of vibration are required.

What are the specifications of the RULAND MANUFACTURING MJSC51-25-A coupling hub?

The MJSC51-25-A is a metric, aluminum jaw coupling hub with a 50.8 mm outside diameter. It is part of the MJS51 coupling size family and is designed for zero-backlash curved jaw applications. The manufacturer part number is MJSC51-25-A, and it is made by RULAND MANUFACTURING.

Where to buy RULAND MANUFACTURING jaw coupling hubs worldwide?

You can source RULAND MANUFACTURING jaw coupling hubs through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times on the MJSC51-25-A and other RULAND MANUFACTURING components.

How to select the correct RULAND MANUFACTURING jaw coupling hub size?

To select the correct hub, match the outside diameter (50.8 mm for MJS51) and bore size to your shaft dimensions. Ensure the coupling size and material (aluminum) suit your torque and misalignment requirements. RULAND MANUFACTURING provides technical data; consult their catalog or contact 3G Electric for sourcing assistance.

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.

Browse all RULAND MANUFACTURING products →Contact our engineers →