Machinery's Handbook, 31st Edition
1902 RETAINING RINGS Table 4. American National Standard Metric Basic External Series 3AM1 Retaining Rings, Checking and Performance Data ANSI/ASME B27.7-1977 (R2017) Ring Series and Size No. Clearance Dia. Gaging Diameter a Allowable Thrust Loads Sharp Corner Abutment Maximum Allowable Corner Radii and Chamfers Allowable Assembly Speed b Ring Over Shaft Ring in Groove Table 4. (Continued) American National Standard Metric Basic External Series 3AM1 Retaining Rings, Checking and Performance Data ANSI/ASME B27.7-1977 (R2017)
3AM1
K max.
R max. Ch max.
…
P r c kN 36
P g d kN
C 1
C 2
No. − 34 − 35 − 36 − 38 − 40 − 42 − 43 − 45 − 46 − 48 − 50 − 52 − 54 − 55 − 57 − 58 − 60 − 62 − 65 − 68 − 70 − 72 − 75 − 78 − 80 − 82 − 85 − 88 − 90 − 95
mm mm
mm
mm mm rpm
44.9 45.9 48.6 50.6 54.0 56.0 57.0 59.0 60.0 62.4 64.4 67.6 69.6 70.6 72.6 73.6 75.6 77.6 80.6 83.6 88.1 90.1 93.1 95.4
42.5 43.4 46.1 48.0 51.3 53.2 54.0 55.9 56.8 59.1 61.1 64.1 66.1 66.9 68.9 69.8 71.8 73.6 76.6 79.5 83.9 85.8 88.7 92.1 93.1 95.1 97.9
37.9 39.0 40.2 42.5 44.5 46.9 47.9 50.0 50.9 53.0 55.2 57.4 59.5 60.4 62.7 63.6 65.8 67.9 71.2 74.5 76.4 78.5 81.7 84.6 87.0 89.0 92.1 95.1
16.7 18.1 18.9 20.5 22.6 24.8 26.4 28.8 30.4
1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.3 2.4 2.4 2.4 2.5 2.5 2.5 2.6 2.6 2.6 2.7 2.8 2.9 2.9 2.9 3.0 3.0 3.1 3.2 3.2 3.2 3.2 3.4 3.5
1.1 1.1 1.2 1.2 1.2 1.3 1.4 1.4 1.4 1.4 1.4 1.5 1.5 1.5 1.5 1.6 1.6 1.6 1.7 1.7 1.7 1.7 1.8 1.8 1.9 1.9 1.9 1.9 1.9 2.1 2.1
14 000 13 500 13 300 12 700 12 000 11 000 10 800 10 000
37 38 40 52 54 55 58 59 62 64 84 87 89 91 93 97
9 500 8 800 8 000 7 700 7 500 7 400 7 200 7 100 7 000 6 900 6 700 6 500 6 400 6 200 5 900 5 600 5 400 5 200 5 000 4 800 4 500 4 350 4 150
33 35 37 40 44 45 46 49 52 54 58 62 65 69 76 80 84 91 97
100 105 110 136 140 147 151 155 159 165 199 204 215 227
97.9 100.0 103.0
107.0 100.8 109.0 103.6 114.0 108.6
97.1 102.7 108.0
101 112 123
− 100 119.5 113.7
a For checking when ring is seated in groove. b These values have been calculated for steel rings.
c These values apply to rings made from SAE 1060-1090 steels and PH 15-7 Mo stainless steel used on shafts hardened to 50 RC minimum, with the exception of sizes − 4, − 5, and − 6 which are supplied in beryllium copper only. Values for other sizes made from beryllium copper can be calculated by multiplying the listed values by 0.75. The values listed include a safety factor of 4. d These values are for all standard rings used on low carbon steel shafts. They include a safety factor of 2. Maximum allowable assembly loads with R max or Ch max are: For rings sizes − 4, 0.2 kN; for sizes − 5 and − 6, 0.5 kN; for sizes − 7 through − 12, 2.1 kN; for sizes − 13 through − 17, 4.0 kN; for sizes − 18 through − 26, 6.0 kN; for sizes − 27 through − 38, 8.6 kN; for sizes − 40 through − 50, 13.2 kN; for sizes − 52 through − 68, 22.0 kN; for sizes − 70 through − 85, 32 kN; and for sizes − 88 through − 100, 47 kN. Source: Appendix to American National Standard ANSI/ASME B27.7-1977 (R2017).
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