RULAND MANUFACTURING Jaw Coupling Hub: JS21 Coupling Size, 1 5/16 in Outside Dia, Inch
The RULAND MANUFACTURING JS21-8-A is a zero-backlash curved jaw coupling hub in the JS21 coupling size, made of inch-dimension aluminum with a 1 5/16 in outside diameter. As a genuine RULAND MANUFACTURING component…
SKU 3G-OTH-134350
Also listed as: JS218A · JS21 8 A
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
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Product Description
The RULAND MANUFACTURING JS21-8-A is a zero-backlash curved jaw coupling hub in the JS21 coupling size, made of inch-dimension aluminum with a 1 5/16 in outside diameter. As a genuine RULAND MANUFACTURING component, it is designed for motion-control applications requiring precise torque transmission without backlash.
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 JS21-8-A jaw coupling hub used for?
The Ruland Manufacturing JS21-8-A is a zero-backlash curved jaw coupling hub used to connect two shafts in motion-control systems, such as servo motors and encoders. It accommodates misalignment while transmitting torque smoothly. Common in packaging, robotics, and CNC machinery, this aluminum hub provides reliable, maintenance-free operation in precision industrial applications.
What are the specifications of the Ruland Manufacturing JS21-8-A coupling hub?
The Ruland Manufacturing JS21-8-A is an inch-series, aluminum jaw coupling hub with a JS21 coupling size and an outside diameter of 1 5/16 in. It is designed for zero-backlash curved jaw couplings, ensuring accurate torque transmission. The manufacturer part number is JS21-8-A, and it is suitable for motion-control applications requiring precise shaft alignment.
Where to buy Ruland Manufacturing JS21-8-A coupling hubs worldwide?
You can source the Ruland Manufacturing JS21-8-A coupling hub 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; we provide reliable sourcing for this precision component to support your operations anywhere in the world.
How to select the correct Ruland Manufacturing jaw coupling hub size?
To select the correct Ruland Manufacturing jaw coupling hub, match the coupling size (e.g., JS21) and bore diameter to your shaft dimensions. The JS21-8-A has an outside diameter of 1 5/16 in and is designed for inch shafts. Ensure the hub material (aluminum) suits your torque and environmental needs. Consult Ruland's technical data for bore and keyway specifications.
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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.
