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RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch - Zero-Backlash Curved Jaw Coupling Hubs
RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch

The RULAND MANUFACTURING Jaw Coupling Hub is a zero-backlash curved jaw coupling hub in the JS21 coupling size, with a 1 5/16 in outside diameter. This inch, aluminum hub (MPN JSC21-10-A) is designed for motion…

SKU 3G-OTH-134235

Also listed as: JSC2110A · JSC21 10 A

Brand
RULAND MANUFACTURING
Item
Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch
Category
Zero-Backlash Curved Jaw Coupling Hubs
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

RULAND MANUFACTURING
Manufacturer Part Number
JSC21-10-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 Jaw Coupling Hub is a zero-backlash curved jaw coupling hub in the JS21 coupling size, with a 1 5/16 in outside diameter. This inch, aluminum hub (MPN JSC21-10-A) is designed for motion control applications requiring precise torque transmission without backlash.

Frequently Asked Questions

What is a RULAND MANUFACTURING JS21 jaw coupling hub used for?

A RULAND MANUFACTURING JS21 jaw coupling hub is used in motion-control and power-transmission systems to connect two shafts while dampening vibration and accommodating minor misalignment. It is commonly applied in packaging machinery, conveyors, and servo-driven equipment where zero-backlash performance is required.

What are the specifications of the RULAND MANUFACTURING JSC21-10-A jaw coupling hub?

The RULAND MANUFACTURING JSC21-10-A is a zero-backlash curved jaw coupling hub in the JS21 coupling size. It has an outside diameter of 1 5/16 inches and is made of aluminum. This inch-series hub is designed for use with matching spider inserts to transmit torque without backlash.

Where to buy RULAND MANUFACTURING jaw coupling hubs worldwide?

You can source RULAND MANUFACTURING jaw coupling hubs 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 on the JSC21-10-A or other RULAND coupling components.

How to select the correct RULAND MANUFACTURING jaw coupling hub for an application?

To select the correct RULAND MANUFACTURING jaw coupling hub, match the coupling size (e.g., JS21) to your shaft diameters and torque requirements. Verify the outside diameter and bore size, and choose the hub material—aluminum for lower inertia, steel for higher torque. Always consult the manufacturer's catalog for load ratings.

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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Cross-referenced by specification & description
RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JSC21-6-A)
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RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JSC21-6-A)
RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JS21-6-A)
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RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch, Aluminum (MPN JS21-6-A)
Zero-backlash curved jaw coupling hub for motion control and power transmission systems. Made of aluminum with 1 5/16 in outside diameter. Designed for use with spider inserts to transmit torque without backlash, compensating for minor shaft misalignment
RULAND MANUFACTURING
Zero-backlash curved jaw coupling hub for motion control and power transmission systems. Made of aluminum with 1 5/16 in outside diameter. Designed for use with spider inserts to transmit torque without backlash, compensating for minor shaft misalignment
This zero-backlash curved jaw coupling hub is made of aluminum with a 1 5/16 in outside diameter. It is designed for inch-dimension shafts and is used in motion control systems to connect two shafts while compensating for misalignment and transmitting torque without backlash
RULAND MANUFACTURING
This zero-backlash curved jaw coupling hub is made of aluminum with a 1 5/16 in outside diameter. It is designed for inch-dimension shafts and is used in motion control systems to connect two shafts while compensating for misalignment and transmitting torque without backlash
This zero-backlash curved jaw coupling hub is made of aluminum with a 1 5/16 in outside diameter. It is designed for use in motion-control systems requiring precise torque transmission without backlash, accommodating misalignment between connected shafts. Typical applications include servo motors, encoders, and other precision drive systems
RULAND MANUFACTURING
This zero-backlash curved jaw coupling hub is made of aluminum with a 1 5/16 in outside diameter. It is designed for use in motion-control systems requiring precise torque transmission without backlash, accommodating misalignment between connected shafts. Typical applications include servo motors, encoders, and other precision drive systems
This aluminum curved jaw coupling hub is part of the JS21 series, designed for inch-sized shafts. With a 1 5/16 in outside diameter, it provides zero-backlash torque transmission in motion control systems. Typical applications include connecting shafts in servo motors, encoders, and precision positioning equipment where accurate torque transfer and misalignment compensation are needed
RULAND MANUFACTURING
This aluminum curved jaw coupling hub is part of the JS21 series, designed for inch-sized shafts. With a 1 5/16 in outside diameter, it provides zero-backlash torque transmission in motion control systems. Typical applications include connecting shafts in servo motors, encoders, and precision positioning equipment where accurate torque transfer and misalignment compensation are needed

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