Machinery's Handbook, 31st Edition
1900 RETAINING RINGS − 50, +0.90, − 0.65 mm; for sizes − 52 through − 75, +1.00, − 0.75 mm; for sizes − 78 through − 92, +1.40, − 1.40 mm; for sizes − 95 through − 155, +1.65, − 1.65 mm; for sizes − 160 through − 180, +2.05, − 2.05 mm; and for sizes − 185 through − 250, +2.30, − 2.30 mm. Groove Diameter Tolerances: For ring sizes − 8 and − 9, +0.06 mm; for sizes − 10 through − 18, +0.10 mm; for sizes − 19 through − 28, +0.15 mm; for sizes − 30 through − 50, +0.20 mm; for sizes − 52 through − 98, +0.30; for sizes − 100 through − 160, +0.40 mm; and for sizes − 165 through − 250, +0.50 mm. Groove Diameter F.I.M. (Full Indicator Movement) or maximum allowable deviation of concentricity between groove and shaft: For ring sizes − 8 through − 10, 0.03 mm; for sizes − 11 through − 15, 0.05 mm; for sizes − 16 through − 25, 0.10 mm; for sizes − 26 through − 45, 0.15 mm; for sizes − 46 through − 80, 0.20 mm; for sizes − 82 through − 150, 0.25 mm; and for sizes − 155 through − 250, 0.30 mm. Groove Width Tolerances: For ring size − 8, +0.10 mm; for sizes − 9 through − 38, +0.15 mm; for sizes − 40 through − 130, +0.20 mm; and for sizes − 135 through − 250, +0.25 mm. Groove Maximum Bottom Radii: For ring sizes − 8 through − 17, 0.1 mm; for sizes − 18 through − 30, 0.2 mm; for sizes − 32 through − 55, 0.3 mm; and for sizes − 56 through − 250, 0.4 mm. For manufacturing details not shown, including materials, see ANSI/ASME B27.7-1977 (R2017). Table 3. American National Standard Metric Reduced Cross Section Retaining Rings.—E Ring External Series —3CM1 ANSI/ASME B27.7-1977 (R2017)
D Y
W
d
R
t
Z
E
Detail of Groove
G S
Ring
Groove
Ring
Groove
Y nom
G W d ref. Z min.
Y nom
G W d ref. Z min. 8.90 1.0 1.05 2.1 9.60 1.2 1.20 2.4
S
D t
S
D t
1 0.64 0.25 2.0 0.72 0.32 0.14 0.3 11 8.55 0.9 17.4 2 1.30 0.25 4.0 1.45 0.32 0.28 0.6 12 9.20 1.1 18.6
3 2.10 0.4 4 2.90 0.6 5 3.70 0.6
5.6 2.30 0.5 0.35 0.7 13 9.95 1.1 20.3 10.30 1.2 1.35 2.7 7.2 3.10 0.7 0.45 0.9 15 11.40 1.1 22.8 11.80 1.2 1.60 3.2
8.5 3.90 0.7 0.55 1.1 16 12.15 1.1 23.8 12.50 1.2 1.75 3.5 6 4.70 0.6 11.1 4.85 0.7 0.58 1.2 18 13.90 1.3 27.2 14.30 1.4 1.85 3.7 7 5.25 0.6 13.4 5.55 0.7 0.73 1.5 20 15.60 1.3 30.0 16.00 1.4 2.00 4.0 8 6.15 0.6 14.6 6.40 0.7 0.80 1.6 22 17.00 1.3 33.0 17.40 1.4 2.30 4.6 9 6.80 0.9 15.8 7.20 1.0 0.90 1.8 25 19.50 1.3 37.1 20.00 1.4 2.50 5.0 10 7.60 0.9 16.8 8.00 1.0 1.00 2.0 … … … … … … … … All dimensions are in millimeters. Size − 1 is available in beryllium copper only. These rings are designated by series symbol and shaft diameter, thus: for a 2 mm diameter shaft, 3CM1-2; for a 13 mm shaft, 3CMI -13; etc. Ring Free Diameter Tolerances: For ring sizes − 1 through − 7, +0.03, − 0.08 mm; for sizes − 8 through − 13, +0.05, − 0.10 mm; and for sizes − 15 through − 25, +0.10, − 0.15 mm. Groove Diameter Tolerances: For ring sizes − 1 and − 2, − 0.05 mm; for sizes − 3 through − 6, − 0.08; for sizes − 7 through − 11, − 0.10 mm; for sizes − 12 through − 18, − 0.15 mm; and for sizes − 20 through − 25, − 0.20 mm. Groove Diameter F.I.M. (Full Indicator Movement) or maximum allowable deviation of concentricity between groove and shaft: For ring sizes − 1 through − 3, 0.04 mm; for − 4 through − 6, 0.05 mm; for − 7 through − 10, 0.08 mm; for − 11 through − 25, 0.10 mm. Groove Width Tolerances: For ring sizes − 1 and − 2, +0.05 mm; for size − 3, +0.10 mm; and for sizes − 4 through − 25, +0.15 mm. Groove Maximum Bottom Radii: For ring sizes − 1 and − 2, 0.05 mm; for − 3 through − 7, 0.15 mm; for − 8 through − 13, 0.25 mm; and for − 15 through − 25, 0.4 mm. For manufacturing details not shown, including materials, see ANSI/ASME B27.7-1977 (R2017).
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