RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Jaw Coupling Hub: JS12 Coupling Size, 3/4 in Outside Dia, Inch

The RULAND MANUFACTURING JS12-3-A is a zero-backlash curved jaw coupling hub in the JS12 coupling size, constructed from inch-dimensioned aluminum with a 3/4 in outside diameter. This component is designed for motion…

SKU 3G-OTH-134130

Also listed as: JS123A · JS12 3 A

Brand

RULAND MANUFACTURING

Item

Jaw Coupling Hub: JS12 Coupling Size, 3/4 in Outside Dia, Inch

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

JS12-3-A 

Type

Inch, Aluminum 

Outside Dia

3/4 in 

Technical Documents

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RULAND MANUFACTURING Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is a RULAND MANUFACTURING JS12-3-A jaw coupling hub used for?

The RULAND MANUFACTURING JS12-3-A is a zero-backlash curved jaw coupling hub used to connect two rotating shafts in motion-control systems. It is commonly applied in servo motors, encoders, and precision indexing equipment where accurate torque transmission and misalignment compensation are required.

What are the specifications of the RULAND MANUFACTURING JS12-3-A?

The JS12-3-A is a jaw coupling hub with a JS12 coupling size and a 3/4 in outside diameter. It is made of aluminum and has an inch bore. The manufacturer part number is JS12-3-A. This hub is designed for use with RULAND MANUFACTURING curved jaw coupling spiders.

Where to buy RULAND MANUFACTURING JS12-3-A worldwide?

3G Electric supplies the RULAND MANUFACTURING JS12-3-A jaw coupling hub worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this precision coupling component.

How to select the correct RULAND MANUFACTURING jaw coupling hub?

To select the correct RULAND MANUFACTURING jaw coupling hub, match the coupling size (e.g., JS12) to the required bore diameter and shaft size. Consider torque requirements, misalignment tolerance, and operating temperature. The JS12-3-A aluminum hub suits light-duty applications; verify compatibility with the mating spider and hub.

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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