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Reprinted from ASME B17.1–1967 by permission of the American Society of Mechanical Engineers. All rights reserved.Note:All dimensions are given in inches.
CHAPTER ELEVENKeys, Couplings, and Seals 427TABLE 11–3 Woodruff Key DimensionsKey numberNominal key size, W:BActual length, FHeight of key, CShaft keyseat depthHub keyseat depth2021>16 *1>40.2480.1040.07280.03722041>16 *1>20.4910.2000.16680.03724061>8 *3>40.7400.3100.24550.06856083>16 *10.9920.4350.33930.09978101>4 *1141.2400.5440.41700.131012103>8 *1141.2400.5440.35450.193516281>2 *3122.8800.9350.68300.256024283>4 *3122.8800.9350.55800.3810Source:Reprinted from ASME B17.2–1967, by permission of the American Society of Mechanical Engineers. All rights reserved.Note:All dimensions are given in inches.FIGURE 11–3 Key typesto improve location. Square cut keys are usually used with the sled-runner-type keyseat.The key is sometimes held in position with a set screw in the hub over the key. However, the reliability of this approach is questionable because of the possibility of the set screw’s backing out with vibration of the assembly. Axial location of the assembly should be provided by more posi-tive means, such as shoulders, retaining rings, or spacers.