August 28, 2008. Ruland offers miniature disc couplings both in single and double disc styles. Disc couplings are high performance motion control couplings with zero-backlash, excellent speed capabilities up to 10,000 rpm, strength and torsional stiffness characteristics, as well as low inertia for today’s highly responsive systems. Disc couplings are often used in servomotor and lead screw applications.
In addition, two single disc couplings are often used in tandem when greater misalignment or a longer distance is required such as on gantry systems.Disc couplings are an assembly of two black anodized aluminum hubs, multiple flat stainless steel disc springs to transmit torque, and a center spacer for double disc styles. The thin discs allow for a substantial amount of misalignment between shafts, while remaining rigid under torque loads. Parallel misalignment is accommodated by the double disc style or by two single disc couplings used in tandem. Double disc styles are available with either an anodized aluminum center spacer or an electrically isolating acetal center spacer.
Both disc couplings types are offered in clamp style and set screw style, with standard outer diameters from 15mm to 57mm, and bore sizes from 1/8" to 1 1/4" in the inch series and 3mm to 30mm in the metric series. Couplings with different bores sizes including mixed inch and metric are available.Disc couplings are part of Ruland’s complete product line which includes shaft collars and rigid couplings with precision honed bores and five types of zero-backlash motion control couplings: beam couplings, bellows couplings, oldham couplings, curved jaw couplings and miniature disc couplings.
Summary of characteristics:
Maximum speed: 10,000 rpmGood misalignment in double disc styleExcellent torsional rigidity and torque capacityNo vibration dampeningLow inertiaPicture: Double disc coupling from Ruland
Company Information:
Ruland Manufacturing Co., Inc. has been a precision manufacturer since 1937, making a variety of products including the valve that pressurized the spacesuit of the first American to walk in space. Ruland’s focus for the past 40 years has been on high performing shaft collars and couplings. The complete line of products includes shaft collars and rigid couplings, and a full line of motion control couplings: beam couplings, bellows couplings, oldham couplings, miniature disc couplings and zero backlash jaw couplings.
