公制键 BS 46-1-1958 英制键槽尺寸规格

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Statement

22 30 38 44 50 58 65 75 85 95

30 8 x 7 38 44 50 58 65 75 85 95 110

Nominal

Shaft Diam Key

To Size

Over

(incl.) 10 12 17

12 4 x 4 17 5 x 5 22 6 x 6

Keyway Chart

The following tables show standard dimensions for keys and their grooves.

Metric – Rectangular

B.S.4235 : PART 1 : 1972

Dimensions (mm)

A

B

C

D

E

F

R 0.16 0.25 0.25

3.970 2.5 3.985 1.8 4.000 2.6 4.015 1.9 4.970 3.0 4.985 2.3 5.000 3.1 5.015 2.4 5.970 3.5 5.985 2.8 6.000 3.6 6.015 2.9

4.030 3.970 5.030 4.970 6.030 5.970

7.964 4.0 7.982 3.3 8.000 7.000

0.25

8.000 4.2 8.018 3.5 7.964 6.910

10 x 9.964 5.0 9.982 3.3 10.000 8.000

0.40

8 10.000 5.2 10.018 3.5 9.964 7.910 12 x 11.957 5.0 11.979 3.3 12.000 8.000

0.40

8 12.000 5.2 12.021 3.5 11.957 7.910 14 x 13.957 5.5 13.979 3.8 14.000 9.000

0.40

9 14.000 5.7 14.021 4.0 13.957 8.910 16 x 15.957 6.0 15.979 4.3 16.000 10.000

0.40

10 16.000 6.2 16.021 4.5 15.957 9.910 18 x 17.957 7.0 17.979 4.4 18.000 11.000

0.40

11 18.000 7.2 18.021 4.6 17.957 10.890 20 x 19.948 7.5 19.974 4.9 20.000 12.000

0.60

12 20.000 7.7 20.026 5.1 19.948 11.890 22 x 21.948 9.0 21.974 5.4 22.000 14.000

0.60

14 22.000 9.2 22.026 5.6 21.948 13.890 25 x 24.948 9.0 24.974 5.4 25.000 14.000

0.60

14 25.000 9.2 25.026 5.6 24.948 13.890 28 x 27.948 10.0 27.974 6.4 28.000 16.000

0.60

16 28.000 10.2 28.026 6.6 27.948 15.890 32 x 31.938 11.0 31.969 7.4 32.000 18.000

0.60

18 32.000 11.2 32.031 7.6 31.938 17.890

110 130

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