Shaft locking devices eliminate need for keyways

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Ameridrives Couplings now offers a full line of Ameriloc internal and external locking devices and shaft couplings. All units are custom-engineered, manufactured, and tested to tolerances to meet specific customer requirements and provide years of trouble-free service.

The devices eliminate the need for keyways, splines, or hydraulic hubs; allowing for unlimited shaft positioning. Features include zero backlash, reduced shaft stress, and high contact pressure for greater torque. Tight contact prevents contamination in high dust and moisture environments.

Ameriloc locking devices are suited for use on test stands, compressors, pulp & paper.  

All units are pre-assembled, ready to install. Torque range is from 25,000 to 4,303,675 ft.lbs. (34 to 5,835 kNm). A range of standard sizes is available with outer diameters from 12.5 to 53 in. (320 to 1,350 mm), and shaft diameters from 6.5 to 29.5 in. (165 to 750 mm). Additional sizes and custom designs are available upon request. For more information visit




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For further information, contact Greg Surufka, VP/Creative Director, Heinzeroth Marketing Group,

415 Y Blvd., Rockford, IL 61107.  Tel 815-847-7532.  



Or contact David Brooksbank, Director of Marketing, Altra Industrial Motion,

449 Gardner St., South Beloit, IL 61080.  Tel 815-389-6227. 



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