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Key number for a woodruff key is 2428. The nominal diameter of the key is: (a) 28 in (b) 24 in (c) 3.5 in (d) 3/4 in

Key number for a woodruff key is 2428. The nominal diameter of the key is: (a) 28 in (b) 24 in (c) 3.5 in (d) 3/4 in

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Key number for a woodruff key is 2428.  The nominal diameter of the key is:

  (a)  28 in

  (b)  24 in

  (c)  3.5 in

  (d)  3/4 in

ANSI Standard B 17.2-1967 lists the dimensions for a large number of standard Woodruff keys and their stress analysis for this type of key proceeds in the manner discussed for the parallel key, taking into consideration the particular geometry of the Woodruff key. Table 11 -3 provides a sampling. Note that the key number indicates the nominal key dimensions. The last two digits give the nominal diameter, B in eighths of an inch, and the digits preceding the last two give the nominal width, W, in thirty-seconds of an inch. For example, key number 1210 has a diameter of 10/8 in (1 % in),and a width of 12/32 in (3/8 in). The actual size of the key is slightly smaller than half of the full circle, as shown in dimensions C and F in Table 11-3. TABLE 11-3 Woodruff Key Dimensions Key number Nominal key size, W x B Actual length, F Height of key, C Shaft keyseat depth Hub keyseat depth 202 1/16 x 1/4 0.248 0.104 0.0728 0.0372 204 1/16 x 1/2 0.491 0.200 0.1668 0.0372 406 1/8 x 3/4 0.740 0.310 0.2455 0.0685 608 3/16 x 1 0.992 0.435 0.3393 0.0997 810 1/4 x 1 1.240 0.544 0.4170 0.1310 1210 3/8 x 1 1.240 0.544 0.3545 0.1935 1628 1/2 x 3) 2.880 0.935 0.6830 0.2560 3/4 x 33 2428 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.
Transcribed Image Text:ANSI Standard B 17.2-1967 lists the dimensions for a large number of standard Woodruff keys and their stress analysis for this type of key proceeds in the manner discussed for the parallel key, taking into consideration the particular geometry of the Woodruff key. Table 11 -3 provides a sampling. Note that the key number indicates the nominal key dimensions. The last two digits give the nominal diameter, B in eighths of an inch, and the digits preceding the last two give the nominal width, W, in thirty-seconds of an inch. For example, key number 1210 has a diameter of 10/8 in (1 % in),and a width of 12/32 in (3/8 in). The actual size of the key is slightly smaller than half of the full circle, as shown in dimensions C and F in Table 11-3. TABLE 11-3 Woodruff Key Dimensions Key number Nominal key size, W x B Actual length, F Height of key, C Shaft keyseat depth Hub keyseat depth 202 1/16 x 1/4 0.248 0.104 0.0728 0.0372 204 1/16 x 1/2 0.491 0.200 0.1668 0.0372 406 1/8 x 3/4 0.740 0.310 0.2455 0.0685 608 3/16 x 1 0.992 0.435 0.3393 0.0997 810 1/4 x 1 1.240 0.544 0.4170 0.1310 1210 3/8 x 1 1.240 0.544 0.3545 0.1935 1628 1/2 x 3) 2.880 0.935 0.6830 0.2560 3/4 x 33 2428 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.
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