RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch

The RULAND MANUFACTURING Jaw Coupling Hub is a zero-backlash curved jaw coupling hub in JC21 coupling size, with a 1 5/16 in outside diameter. This inch-series aluminum hub (MPN JCC21-6-A) is designed for motion…

SKU 3G-OTH-134117

Brand

RULAND MANUFACTURING

Item

Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch

Technical Specifications

RULAND MANUFACTURING

Manufacturer Part Number

JCC21-6-A 

Type

Inch, Aluminum 

Outside Dia

1 5/16 in 

View Full Spec Sheet

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 Jaw Coupling Hub used for?

A RULAND MANUFACTURING Jaw Coupling Hub, such as the JCC21-6-A, is used in power transmission systems to connect two shafts while accommodating misalignment. It is commonly applied in pumps, gearboxes, and conveyors where zero-backlash curved jaw coupling hubs provide vibration damping and torque transmission.

What are the specifications of the RULAND MANUFACTURING JCC21-6-A?

The RULAND MANUFACTURING JCC21-6-A is a zero-backlash curved jaw coupling hub with a JC21 coupling size, 1 5/16 in outside diameter, and inch dimensions. It is made of aluminum and has a manufacturer part number JCC21-6-A. This hub is designed for use with RULAND jaw couplings.

Where to buy RULAND MANUFACTURING JCC21-6-A worldwide?

You can source the RULAND MANUFACTURING JCC21-6-A worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select a RULAND MANUFACTURING jaw coupling hub?

To select a RULAND MANUFACTURING jaw coupling hub, match the coupling size (e.g., JC21) to your shaft diameters and torque requirements. Ensure the hub bore fits your shaft and consider material—aluminum for lighter loads. Verify zero-backlash curved jaw design for precision applications.

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 →