Slit couplings are zero-backlash and manufactured from a single piece of aluminum with intermittent slit cuts allowing for high torque and torsional stiffness capabilities, low inertia, and a long-life. The proprietary slit pattern with radiused edges reduces stresses that build up during misalignment conditions and torque load allowing for reduced wear and stress on the coupling.
Slit couplings have a high-performance design that balances torque, misalignment, and torsional stiffness capabilities. The have a torque capacity comparable to that of a single disc coupling, torsional stiffness similar to a stainless steel beam coupling, and accommodate misalignment like an aluminum beam coupling. This combination makes for a well balanced coupling that can be used in demanding applications where high misalignment is present.
Ruland offers slit couplings in RL- and RS-series. RL-series couplings have longer lengths allowing for greater parallel misalignment capabilities and increased torsional stiffness. RS-series couplings are designed to fit in compact spaces and offer parallel misalignment capabilities, differentiating them from single disc couplings. Both series can accommodate all forms of misalignment with low bearing loads and have a balanced design for speeds up to 70,000 RPM.
Slit couplings are available in clamp screw and set screw designs with inch, metric, and inch to metric bore sizes ranging from 1/8” to 3/8” and 1.5mm to 12mm. They are manufactured by Reliance Precision Ltd. in their Cork, Ireland factory and stocked or bored to size in Ruland’s Marlborough, MA location.