Ruland rigid couplings are available in one and two-piece designs, with and without keyways, in aluminum, carbon steel, and stainless steel. A large number of standard sizes are available in straight- and step-bore combinations to fit shafts ranging from 1/4" to 2" in diameter in the inch series and from 6mm to 50mm in diameter in the metric series. Inch to metric conversion couplings are also available by special order.

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Three series of zero-backlash flexible couplings are available with inch and metric bores and outside diameters ranging from 3/8" (6mm) to 1 1/2" (38mm). Couplings in all three series are machined from a single piece of aluminum and feature multiple spiral cuts. The multiple cut design provides higher torque capabilities and greatly reduced wind-up compared to commodity type single beam couplings.

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Ruland bellows couplings are offered in six sizes with set screw or clamp style hubs and bores ranging from 1/8" (3mm) to 1" (25mm). Stainless steel hubs, keyways, and other custom features are available by special order. Bellows couplings combine stainless steel bellows and aluminum hubs to offer superior performance in motion control applications. The thin wall of the bellows allows the coupling to flex easily, yet remain rigid under torsional loads. Parallel misalignment, angular misalignment and axial motion are accommodated by bellows.

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Zero backlash jaw couplings are offered in seven sizes of set screw or clamp style hubs with bore from 1/8" (3mm) to 1 1/8" (30mm). They are comprised of two hubs and an elastic element. The spider, made of an advanced polyurethane material, provides dampening of impulse loads, minimizing shock to the motor and other sensitive equipment. Available in two durometers, these spiders allow the user to customize the jaw coupling's performance.

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Oldham couplings are offered in seven sizes of set screw or clamp style hubs with bore from 1/8" (3mm) to 1" (25mm). The replaceable center disks are available in two materials to suit different applications: Nylon (compliant) and Acetal (zero backlash). Oldham couplings are ideal for many motion control applications. Comprised of aluminum hubs with drive tenons that mate to a torque transmitting plastic disk, their design allows for easy sliding to accommodate misalignment with a very light bearing load.

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Miniature disc couplings are the newest addition to our expanding line of motion control couplings. Available in single and double disc styles with bore sizes ranging from 1/8" to 1 1/4" in the inch series and 3mm to 30mm in the metric series. The couplings are an assembly of two anodized aluminum hubs, multiple flat stainless steel disc springs and a center spacer for double disc styles. The center spacer is available in a choice of anodized aluminum or insulating acetal for electrical isolation. The thin discs allow for a substantial amount of angular and parallel misalignment between shafts, while remaining rigid under torque loads.

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