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.