Machinery's Handbook, 31st Edition
RETAINING RINGS 1903 Table 5. American National Standard Metric Basic Internal Series 3BMI Retaining Rings—Checking and Performance Data ANSI/ASME B27.7-1977 (R2017)
C 2
C 1
R max
Max Allowable Radius of Retained Part
Ch max
A
Max Allowable Cham fer of Retained Part
Ring Seated in Groove
Ring Compressed in Bore
Clearance Dia.
Ring Series and Size No.
Maximum Allowable Corner Radii and Chamfers
Gaging Diameter a
Allowable Thrust Loads Sharp Corner Abutment
Ring in Bore
Ring in Groove
3BMI
A min.
R max.
Ch max.
P r b kN
P g c kN
C 1
C 2
No.
mm
mm
mm 1.40 1.50 1.85 1.95 2.25 2.35 2.65 2.80 2.80 3.35 3.40 3.40 3.8 4.2 4.3
mm
mm 0.3 0.35 0.35 0.4
4.4 4.6 5.5 5.7 6.7 6.8 6.9 7.9 8.8 9.8
4.8 5.0 6.0 6.3 7.3 7.5 7.7 8.7 9.7
2.4 4.4 4.9 5.4 5.8 8.9 9.7
1.0 1.2 1.5 2.0 2.4 2.6 3.2 3.7 4.2 4.9 5.5 6.0 6.6 7.3 8.3 8.9 9.7
0.4 0.5 0.5 0.6 0.6 0.7 0.7 0.7
− 8 − 9
− 10 − 11 − 12 − 13 − 14 − 15 − 16 − 17 − 18 − 19 − 20 − 21 − 22 − 23 − 24 − 25 − 26 − 27 − 28 − 30 − 32 − 34 − 35 − 36 − 37 − 38 − 40 − 42 − 45 − 46 − 47 − 48 − 50 − 52 − 55 − 57
0.4 0.5 0.5 0.5 0.5 0.6 0.6
10.4 11.0 11.7 12.3 13.1 13.7 14.5 22.5 23.5 24.8 25.7 26.8
0.7 0.75 0.75 0.8
10.8 11.3 12.5 12.7 13.8 14.8 15.9 16.9 18.1 19.2 19.2 20.0 21.9 23.9 26.1 27.2 28.3 29.3 30.4 31.6 32.2 34.9 36.0 37.1 37.9 40.0 41.9 44.2 45.7
10.3 11.4 11.6 12.6 13.5 14.5 15.5 16.5 17.5 17.4 18.2 20.0 22.0 24.0 25.0 26.0 27.0 28.0 29.2 29.7 32.3 33.3 34.3 35.0
0.65 0.7 0.7 0.7
0.9 0.9 0.9 1.0 1.0 1.0 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.7 1.7 1.7 1.7 1.7 1.7 1.7 2.0 2.0 2.0
4.9 5.2 6.0 5.7 5.9 6.0 6.0 7.3 7.6 8.0 8.3 8.4 8.6 9.7 9.0 9.6
0.8 0.8 0.8 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.6 1.6 1.6
11.6 12.7 14.0 14.6 16.5 17.6 20.6 22.3 23.9 24.6 26.4 27.7 30.2 33.8
33 34 37 39 42 43 44 45 46 62 65 69 71 72 74 77 99
9.7 10.0 10.5
36 38 40 45 50 54 58
36.9 38.6 40.8 42.2
12.1 11.7 11.9 12.5
105 109
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