Ringfeder Power Transmission USA Corporation


Keyless shaft-hub locking devices have been the cornerstone of the Ringfeder Power Transmission group. For over 50 years, our product offering of internal clamping and external clamping locking devices and global support has been unparalleled in the industry.

Link To Product: RINGFEDER

Ringfeder Power Transmission USA Corporation


For more than 30 years, GERWAH has specialized in trail-blazing couplings for driving technology and conveying engineering. Our portfolio includes metal bellows, elastomer, safety, and magnetic couplings. From industrial machinery of all kinds to servo systems, linear or high-speed drivers: customers from all around the globe rely on the precision of our components.

Link To Product: GERWAH

Ringfeder Power Transmission USA Corporation


Ringfeder has excelled in offering premium quality locking devices to the market for almost a century. With the same outlook on quality, but at a more economical price, Ringfeder is pleased to offer the Ecoloc devices for budget conscious customers

Link To Product: ECOLOC

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Technical Articles

Fall Guys: Deforming Dampeners (.pdf) (Power Transmission) Some designs such as packaging-machinery frames rarely if ever endure internal shock loading or impact. In other cases, often in end-user products, designs are lower in cost. In both instances,... (View Full Article)
Quieting Impact and Vibration (.pdf) (Shock and Vibration Control Products) Spring technology for dampening is relatively old. Stagecoaches had leaf springs, early trains had large, crude, coil-spring buffers (to absorb shocks when cars bumped together) and early automobiles... (View Full Article)