RULAND MANUFACTURING Bellows Coupling: 5/8 in Bore Dia 1, 12 mm Bore Dia 2
The RULAND MANUFACTURING BCK21-5/8"-12MM-A is a clamp-on bellows shaft coupling for keyed shafts, featuring a 5/8 in bore diameter 1 and a 12 mm bore diameter 2 with same bore dimensions. It is constructed from…
SKU 3G-OTH-134835
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Product Description
The RULAND MANUFACTURING BCK21-5/8"-12MM-A is a clamp-on bellows shaft coupling for keyed shafts, featuring a 5/8 in bore diameter 1 and a 12 mm bore diameter 2 with same bore dimensions. It is constructed from stainless steel, has a maximum speed of 10,000 RPM, and is designed for inch to metric bore applications.
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 the RULAND MANUFACTURING BCK21-5/8"-12MM-A bellows coupling used for?
This clamp-on bellows shaft coupling connects a 5/8 inch keyed shaft to a 12 mm keyed shaft in motion-control systems. It is used in precision positioning, servo drives, and automation equipment where zero backlash, high torsional stiffness, and inch-to-metric bore transitions are required.
What are the specifications of the RULAND MANUFACTURING BCK21-5/8"-12MM-A?
The coupling has a 5/8 in bore diameter 1 and a 12 mm bore diameter 2 with same bore dimensions. It is made of stainless steel, has a maximum speed of 10,000 RPM, and is designed for inch to metric bore applications. The manufacturer part number is BCK21-5/8"-12MM-A.
Where to buy the RULAND MANUFACTURING BCK21-5/8"-12MM-A worldwide?
3G Electric supplies the RULAND MANUFACTURING BCK21-5/8"-12MM-A bellows coupling worldwide. As 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 the correct RULAND MANUFACTURING bellows coupling for keyed shafts?
Match the bore diameters to your shaft sizes—this model fits a 5/8 inch and a 12 mm keyed shaft. Verify the maximum speed of 10,000 RPM exceeds your application's requirements. Ensure the coupling material (stainless steel) suits your environment. RULAND MANUFACTURING couplings offer zero-backlash performance.
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3G Electric supplies RULAND MANUFACTURING clamp-on bellows shaft couplings for keyed shafts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















