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ABOUT OEP COUPLINGS
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OEP Couplings manufactures a complete line of high-performance, innovative shaft couplings, precisely machined from advanced materials, using the most sophisticated machining technology available. The OEP Coupling division of Oren Elliott Products, Inc. is a continuation of an already long history of manufacturing excellence.
OEP takes great pride in long-standing relationships with many of our customers, including industry leaders in such fields as semiconductor fabrication equipment, robotics, fluid power, pump systems, analytical devices, food processing equipment, and medical equipment.
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OLDHAM/UNIVERSAL COUPLINGS
Advantages:
- Protects driven component by serving as a mechanical "fuse" - an inexpensive replaceable plastic midsection shears under excess load
- Protects support bearings by exerting consistently low reactive forces, even under large misalignments
- Zero backlash and moderate torsional stiffness
- Electrical insulation
- Accommodates large radial misalignment in a short length
- Accommodates much larger angular misalignment then standard Oldham coupling
- Easy installation in blind or difficult installations when through-bores are used
- Economically priced compared to other couplings with similar performance characteristics
- Inexpensive replaceable wear element
- Low moment of inertia
Disadvantages:
- Lower peak torque and torsional stiffness than standard Oldham coupling
- Slightly non-homokinetic transmission (that is, the driven and driving shafts don't move at exactly the same speed throughout one rotation) when angular misalignment is significant
- Axial reactive loads exerted on support bearings when torque approaches maximum
- Accommodates only a small axial misalignment
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UC CONFIGURATION
UI CONFIGURATION
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Variations offered by OEP Couplings:
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UC configuration - similar to the classic Oldham coupling, but with a torque-transmitting element that's round in cross-section, rather than rectangular, allowing pivoting similar to a universal joint.
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UI configuration - a higher torque, higher stiffness variation without the mechanical fuse protective function. Cylindrical fins overlap, with the axes of the two cylinders intersecting, allowing for pure universal action and smooth angular flexion, while still accommodating a large radial misalignment.
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- Materials for midsection: Delrin - for general use; low friction, long wear. High-temperature high-performance thermoplastic - high temperature applications; low-friction-coated Urethane - vibration-dampening for high-shock or high-vibration applications.
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- Materials for hub: Alloy 360 brass, alloy 2011 aluminum, and alloy 303 stainless steel
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- Shaft attachment options: Set screw with or without keyway, clamping with or without keyway
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Typical applications:
Light duty applications where angular misalignment might be significant; printers, instrumentation
Advantages of OEP's Oldham/Universal over other manufacturers' couplings with similar designs:
- Higher torsional stiffness, longer service life, and more consistent performance from one coupling to another due to much tighter machining tolerances, better surface finishes, and one-piece hubs machined from bar
- Higher static break torque and higher peak torque due to small but critical geometrical features, details of fabrication techniques, and the use of advanced materials and processes
- Higher RPM rating because of dynamic balance inherent in every coupling
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