No. 50
PLAIN BORE SPROCKET DIMENSIONS
U.S. TSUBAKI STOCK SPROCKETS
HOW TO ORDER
U.S. Tsubaki Stock Sprockets
All dimensions in inches unless noted.
No. 50 Plain Bore Sprocket Diameters
Type “A” Plain Bore
Type “B” Plain Bore
Chain Data Size
50
No. Teeth
Outside Diameter
Pitch Diameter
Caliper Diameter
Plain Bore
Wt. Lbs.
Plain Bore 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 0.750 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000
MAX Bore *
Hub Dia.
Hub Style
Wt. Lbs. 0.25 0.36 0.48 0.64 0.83 0.88 1.13 1.34 1.51 1.74 2.00 2.22 2.23 2.40 2.56 2.66 3.30 3.40 3.44 3.74 3.80 4.06 4.56 4.74 4.96 5.20 5.14 5.44 5.64 5.90 6.08 6.30 6.50 6.64 6.96 7.06 7.58 8.58 8.22 8.48 9.28 9.22 9.88 9.70 10.24 10.48 11.00 10.93 11.50 12.00 11.82 12.32 13.00 18.16 19.48 24.74 25.50 32.92 42.00
No.
LTB
Pitch
5/8" 3/8"
5/8" Pitch: PLAIN BORE 50
Inside Width
8 9
1.880 2.090 2.300 2.500 2.710 2.910 3.110 3.320 3.520 3.720 3.920 4.120 4.320 4.520 4.720 4.920 5.120 5.320 5.520 5.720 5.920 6.120 6.320 6.520 6.720 6.920 7.120 7.320 7.520 7.720 7.920 8.120 8.320 8.520 8.720 8.910 9.110 9.310 9.510 9.710
1.633 1.828 2.023 2.219 2.415 2.612 2.809 3.006 3.204 3.401 3.599 3.798 3.995 4.194 4.392 4.590 4.788 4.987 5.185 5.384 5.582 5.781 5.979 6.178 6.376 6.575 6.774 6.973 7.171 7.370 7.569 7.768 7.966 8.165 8.364 8.563 8.761 8.960 9.159 9.358 9.556 9.755 9.954
1.233 1.400 1.623 1.796 2.015 2.193 2.409 2.590 2.804 2.987 3.199 3.384 3.595 3.782 3.992 4.179 4.388 4.577 4.785 4.975 5.182 5.371 5.579 5.770 5.976 6.168 6.374 6.565 6.771 6.963 7.169 7.361 7.566 7.759 7.964 8.157 8.361 8.554 8.759 8.952 9.156 9.350 9.554 9.748
NS NS NS NS
NS NS NS NS
0.625 1.125 ¨ 0.750 1.375 ¨ 0.875 1.313 ¨ 1.000 1.750 ¨ 1.250 1.984 ¨
1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.750 1.750 1.750 1.750 1.750 1.750
S S S S S S S S S S S S S E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
Roller Diameter
0.400" 0.343"
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 70 72 80 84 96
Nominal Tooth Width:
0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.625 0.750 0.750 0.750 0.750 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.719 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938 0.938
0.34 0.42 0.50 0.54 0.68 0.76 0.86 0.94 1.06 1.12 1.30 1.44 1.50 1.62 1.72 1.96 2.04 2.36 2.54 2.72 2.80 3.14 3.20 3.34 3.82 3.98 4.14 4.42 4.46 4.86 4.98 5.24 5.42 5.92 6.42 6.50 6.58 7.06 7.10 7.32 7.98 8.08 8.30 8.56 8.90 9.38
1.313 1.438 1.500 1.750 1.875 1.875 2.000 2.000 2.000 2.000 2.000 2.000 2.000 2.000 2.000 2.000 2.000 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.250 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.750 2.750 2.750 2.750
1.875 2.125 2.375 2.500 2.688 2.875 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.250 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 3.750 4.250 4.250 4.250 4.250
How to Order Code: Example Model # for 50 Pitch Plain Bore Carbon Steel Sprockets
A 50 A
37
Altered !!
Chain Pitch in Inches
Hub Type
Number of Teeth
12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 27 28 29 30 31 19 20 21 22 23 24 25 26 27 28 29
32 33 34 35 36 37 38 39 40 41 30 31 32 33 34 35 36 37 38 39 40
42 43 44 45 46 47 48 49 50 51 41 42 43 44 45 46 47 48 49 50 51
52 53 54 55 56 57 58 59 60 70 52 53 54 55 56 57 58 59 60 70 72
72 80 84 96
112
A: No Hub
Extension
A: Alteration Required
8 9
80 84 96
50: 5/8" Pitch
10 11 12 13 14 15 16 17 18
112
B: Hub Extension One Side
9.910 10.110 10.310 10.510 10.710 10.910 11.110 11.310 11.500 11.700 11.900 12.100 12.300 14.290 14.690 16.280 17.080 19.470 22.650
10.153 10.351 10.550 10.749 10.948 11.147 11.346 11.544 11.743 11.942 13.931 14.329 15.919 16.715 19.102 22.284
9.951 10.146 10.349 10.543 10.747 10.941 11.144 11.339 11.542 13.531 13.929 15.519 16.315 18.702 21.884
!! Alteration field only to be denoted if a deviation from standard is required. Please reference Alterations in engineering section, page 210.
10.30 10.50 10.80 14.00 15.24 21.00 22.08 27.40 37.70
TOOTH (NOMINAL) .343˝
.343˝ NOMINAL
.343˝ NOMINAL
TOOTH (NOMINAL)
TOOTH (NOMINAL)
NOMINAL
112
* Dimensions shown allow for standard keyway with set screw at 90 degrees ¨ Has recessed groove in hub for chain clearance NS = Non Stock
LTB
LTB
TYPEA
STYLES TYPEB
STYLEE TYPEB
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