11967 by permission of the American Society of Mechanical Engineers All rights

11967 by permission of the american society of

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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.
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CHAPTER ELEVEN Keys, Couplings, and Seals 427 TABLE 11–3 Woodruff Key Dimensions Key number Nominal key size, W : B Actual length, F Height of key, C Shaft keyseat depth Hub keyseat depth 202 1 > 16 * 1 > 4 0.248 0.104 0.0728 0.0372 204 1 > 16 * 1 > 2 0.491 0.200 0.1668 0.0372 406 1 > 8 * 3 > 4 0.740 0.310 0.2455 0.0685 608 3 > 16 * 1 0.992 0.435 0.3393 0.0997 810 1 > 4 * 1 1 4 1.240 0.544 0.4170 0.1310 1210 3 > 8 * 1 1 4 1.240 0.544 0.3545 0.1935 1628 1 > 2 * 3 1 2 2.880 0.935 0.6830 0.2560 2428 3 > 4 * 3 1 2 2.880 0.935 0.5580 0.3810 Source: 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 types to 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.
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