What is shaft tolerance?

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Shaft tolerance is the amount of allowable difference between the size of collar or coupling and the size of the shaft that will still allow the component to function. Ideally, a ¾” collar will be used on a ¾” inch nominal shaft. The closer to nominal the better – if the difference is too great, […]


What is torque capacity?

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This is a very commonly asked question, and it depends on each individual application. For a collar, the key figure is the axial load of the collar, and for a coupling it is how much torque it can transmit. Consult our technical data sheet for typical maximum values for axial load and torque data. Please note the […]


What is a keyless locking device?

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Keyless Locking Devices (KLDs) are mechanical bushings used to connect power transmission components onto rotating shafts. Without the use of keyways, KLDs eliminate the problems associated with backlash including fretting, corroding, and wallowing. KLDs work with straight bores and generous tolerances, reducing component machining and complexity costs. In addition, KLDs are installed and removed using […]



What are the plating options for keyless locking devices?

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Climax Locking Assemblies and Keyless Rigid Couplings are typically housed unplated; however C192-Series Locking Assemblies are supplied with zinc plating. Additionally shrink discs are supplied with zinc plated outer rings. Upon request, Electroless Nickel or Armoloy® Thin Dense Chrome (TDC) platings are available on all keyless locking devices. If you are looking for other plating […]




Can keyless locking devices be mounted over an existing keyway?

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Climax Keyless Locking Devices can be installed over existing empty keyways. Both Locking Assemblies and Shrink Discs should be rotated to position inner ring radial slits approximately opposite the keyway and a locking screw directly over the keyway. Climax Keyless Locking Devices are not de-rated when installed over existing empty keyways.


Will a keyless locking device fit a non-standard shaft?

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In situations where the measured shaft diameter does not match any standard Climax Locking Assembly, perhaps as a result of damage or excessive wear, a simple adaptor sleeve can be fabricated to effectively “shim” the existing shaft to a standard nominal diameter. These adaptor sleeves can be slit lengthwise or left solid, with slit sleeves […]


Once plated do keyless locking devices maintain torque capacity?

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Climax Locking Assemblies and Keyless Rigid Couplings are stocked unplated, while shrink discs are supplied with zinc-plated outer rings. Upon request, all Climax KLDs can be quoted with either of two after-market plating options: industry-standard electroless Nickel or Armoloy® Thin Dense Chrome (TDC). Both plating solutions offer excellent corrosion resistance with no reduction of rated […]