Stieber Clutch
Type FS20
Stieber Type FS20 |
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Description Type FS-20 is a non bearing supported sprag type freewheel. The unit features an outer race and sprag cage assembly. The sprags run directly on the shaft provided by the user. Bearings are required to support axial and radial loads. Lubrication and sealing must also be provided by the installation. A typical arrangement is to install this type alongside a bearing within the same outside bore tolerance as shown on the following page. The outside diameter is the same as a series 62.. ball bearing. The following table shows the recommended tolerance for the bore to receive the freewheel outer race. A standard H7 tolerance is also acceptable. A key will transmit the torque.
The shaft on which the sprags run must have a surface hardness of HRc 60 to 62 for a finished depth of 0,6 mm minimum. Core hardness should be HRc 35 to 45. Surface rough-ness must not exceed 22 CLA. Maximum shaft taper 0,01 mm per 50 mm length. Concentricity between shaft and housing bore should be maintained within TIR 0,05 mm. The preferred lubrication is oil. The Stieber design allows the use of most of the common lubricants used in power transmission including gear oils with EP additives. When necessary grease lubrication is also possible. The keyway dimensions are conversion of imperial units. This series is interchangeable with the products currently available and standardized in the USA. |
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  Mounting Example |
