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Motion Control Couplings with Inch to Metric Bores

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Motion control couplings are now available from stock with inch-to-metric bores in a variety of styles.

Motion systems often utilize a servo or stepper motor with a metric shaft driving a ball screw, lead screw, or encoder with an inch shaft. Coupling selection is already difficult and becomes more challenging when inch-to-metric bore combinations are needed. Ruland now offers motion control couplings with inch-to-metric bores from stock, allowing engineers to select the style that best fits their application.

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Ruland offers a full range of zero-backlash couplings to match different application requirements.
Why Ruland Servo Couplings?

  • Reduced vibration at speeds up to 70,000 RPM due to balanced designs.
  • Ruland only offers zero-backlash couplings.
  • Engineered to offer better torque and stiffness while maintaining misalignment capabilities than competitors.
  • Inch-to-metric bore combinations in stock
  • All products are RoHS3, REACH, and Conflict Minerals compliant.
  • Offered from stock in our Marlborough, Massachusetts factory and available for immediate delivery.

Ruland now offers motion control couplings with inch-to-metric bore combinations in various sizes, styles, and materials. When selecting a servo coupling, performance factors such as torque, RPM, shaft misalignment, and space requirements should be considered. Matching application parameters to a motion control coupling can be challenging and is critical to system performance..

Beam Couplings : Have excellent all-around performance characteristics, large misalignment capabilities, and are a good starting point. Relatively low torque and torsional stiffness when compared to other servo couplings. Bore sizes range from 1/8” to 3/4” and 3mm to 20mm.

Bellows Couplings : Highest degree of torsional stiffness for applications that require accuracy and repeatability. Suitable for speeds up to 10,000 RPM. No provision for impact loads and limited misalignment capabilities. Bore sizes range from 1/8” to 1-3/4” and 3mm to 45mm.

Disc Couplings : Suitable for delicate equipment requiring highly precise positioning. Discs allow for misalignment while offering high torsional rigidity. Some styles are not suitable for complex or parallel misalignment. Bore sizes range from 1/8” to 1-3/4” and 3mm to 45mm.

Jaw Couplings : Dampens impulse loads and is electrically isolating. Multiple spider materials for a range of dampening and torque capacity. Low misalignment capabilities due to high bearing loads when used improperly. Bore sizes range from 1/8” to 1-1/4” and 3mm to 32mm.

Oldham Couplings : Well suited for large amounts of parallel misalignment. Offer light bearing loads, low inertia, electrical isolation, and easily interchangeable hubs. Not suitable for push-pull applications or unsupported shafts. Bore sizes range from 1/8” to 1-1/4” and 3mm to 32mm.

: Ideal for encoder or other light duty applications. Can fit in tight envelopes with lengths shorter than outer diameters. Controlflex accommodates wide variance in big bore to small bore ratio of up to 3.5:1. Bore sizes range from 1/8" to 1-1/2" and 3mm to 40mm.

: Highest speed ratings in the Ruland offering, up to 70,000 RPM due to a balanced design. Micro bore sizes start at 1.5mm for precision medical and scientific equipment. Reduced bearing loads and increased coupling life when compared to competitors due to patented radiused edges in the slit design. Bore sizes range from 1/8" to 3/8" and 1.5mm to 12mm.

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