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RULAND MANUFACTURING Zero-Backlash Curved Jaw Coupling Hub - Zero-Backlash Curved Jaw Coupling Hubs
RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Zero-Backlash Curved Jaw Coupling Hub

The RULAND MANUFACTURING JC21-5-A is a zero-backlash curved jaw coupling hub in the JC21 coupling size, made of inch-dimension aluminum with a 1 5/16 in outside diameter. 3G Electric interprets this demand and…

SKU 3G-OTH-134221

Also listed as: JC215A · JC21 5 A

Brand
RULAND MANUFACTURING
Item
Zero-Backlash Curved Jaw Coupling Hub
Category
Zero-Backlash Curved Jaw Coupling Hubs
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

RULAND MANUFACTURING
Manufacturer Part Number
JC21-5-A
Type
Inch, Aluminum
Outside Dia
1 5/16 in

Technical Documents

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RULAND MANUFACTURING Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The RULAND MANUFACTURING JC21-5-A is a zero-backlash curved jaw coupling hub in the JC21 coupling size, made of inch-dimension aluminum with a 1 5/16 in outside diameter. 3G Electric interprets this demand and supplies this genuine industrial component, backed by specialist expertise across 14 departments including power transmission.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a RULAND MANUFACTURING JC21-5-A jaw coupling hub used for?

The RULAND MANUFACTURING JC21-5-A is a zero-backlash curved jaw coupling hub used to connect two shafts in motion-control systems. It accommodates misalignment and dampens vibration in industrial machinery, packaging equipment, and servo-drive applications. The aluminum construction provides low inertia for high-speed operation.

What are the specifications of the RULAND MANUFACTURING JC21-5-A coupling hub?

The RULAND MANUFACTURING JC21-5-A is an inch-series, aluminum jaw coupling hub with a 1 5/16 in outside diameter. It is part of the JC21 coupling size family and is designed for zero-backlash curved jaw couplings. The manufacturer part number is JC21-5-A, and it is made in the USA.

Where to buy RULAND MANUFACTURING JC21-5-A coupling hubs worldwide?

You can source the RULAND MANUFACTURING JC21-5-A coupling hub 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 time; we provide competitive pricing and reliable sourcing for this RULAND component.

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

To select the correct RULAND MANUFACTURING jaw coupling hub, match the outside diameter and bore size to your shaft dimensions. The JC21-5-A has a 1 5/16 in outside diameter and is designed for inch shafts. Ensure the hub material (aluminum) suits your torque and speed requirements. Consult the RULAND catalog for bore and keyway options.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JC21-8-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JC21-8-A)
This zero-backlash curved jaw coupling hub from RULAND MANUFACTURING is designed for precise torque transmission in motion control systems. Made of aluminum with an outside diameter of 1 5/16 in, it accommodates misalignment while maintaining accuracy. Suitable for applications such as servo motors, encoders, packaging, robotics, and CNC machinery
RULAND MANUFACTURING
This zero-backlash curved jaw coupling hub from RULAND MANUFACTURING is designed for precise torque transmission in motion control systems. Made of aluminum with an outside diameter of 1 5/16 in, it accommodates misalignment while maintaining accuracy. Suitable for applications such as servo motors, encoders, packaging, robotics, and CNC machinery
RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JC21-6-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JC21-6-A)
Aluminum zero-backlash curved jaw coupling hub with 1 5/16 in outside diameter. Inch series, JC21 coupling size. Used to connect shafts in power transmission applications, accommodating minor misalignment and providing vibration damping
RULAND MANUFACTURING
Aluminum zero-backlash curved jaw coupling hub with 1 5/16 in outside diameter. Inch series, JC21 coupling size. Used to connect shafts in power transmission applications, accommodating minor misalignment and providing vibration damping
This zero-backlash curved jaw coupling hub is made of aluminum and has a 1 5/16 in outside diameter. It is designed for inch-series applications requiring precise torque transmission. Typical uses include connecting shafts in power transmission systems such as pumps, gearboxes, and conveyors
RULAND MANUFACTURING
This zero-backlash curved jaw coupling hub is made of aluminum and has a 1 5/16 in outside diameter. It is designed for inch-series applications requiring precise torque transmission. Typical uses include connecting shafts in power transmission systems such as pumps, gearboxes, and conveyors
RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JCC21-8-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: JC21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JCC21-8-A)

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