Straight and step-bore combinations are available to fit sizes ranging from 1 /8 to 2 in. and 3 to 50 mm. The one-piece version wraps around the shaft for high torsional holding power without shaft damage and fretting inherent with set-screw-style couplings. The two-piece styles allow for disassembly and maintenance without removal of other components and feature opposing hardware for dynamic balancing. The couplings come with Nypatch socket-head cap screws. The Nypatch process involves depositing a 360° coating of nylon on several threads of the socket-head cap screws, which reduces vibration.
Ruland Mfg. Co. Inc., 6 Hayes Memorial Dr., Marlborough, MA 01752, (508) 485-1000, ruland.com
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