No. 120
PLAIN BORE SPROCKET DIMENSIONS
U.S. TSUBAKI STOCK SPROCKETS
HOW TO ORDER
U.S. Tsubaki Stock Sprockets
All dimensions in inches unless noted.
No. 120 Plain Bore Sprocket Dia.
Type “A” Plain Bore
Type “B” & “C” Plain Bore
Chain Data Size
120
No. Teeth
Outside Dia.
Pitch Dia. 4.386 4.854 5.325 5.796 6.269 6.741 7.215 7.689 8.163 8.639 9.114 9.588 10.065 10.541 11.016 11.492 11.969 12.444 12.921 13.397 14.351 15.303 16.734 17.211 19.119 20.073 21.504 22.935 25.797 28.661 33.434 38.207
Caliper Dia.
Plain Bore 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 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500
Wt. Lbs. 3.00 3.80 4.80 5.80 6.70 8.00 9.10 10.60 12.60 13.60 15.10 16.90 18.70 20.00 22.10 24.80 26.80 28.30 30.90 33.60 39.00 43.90 52.00 56.00 71.00 75.00 88.00
Plain Bore 1.375 1.375 1.375 1.375 1.375 1.375 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.250 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500
MAX Bore *
Hub Dia.
Hub Type
Hub Style
Wt. Lbs. 5.30 7.10 7.60 9.90 12.40 14.40 16.70 19.90 20.80 22.20 24.80 25.80 26.70 28.20 30.30 32.10 34.60 40.00 43.15 44.90 50.20 56.00 62.40 66.40 92.00 98.00 99.20
120 No.
LTB
Pitch
1 1/2" 1.00" 0.875" 0.924"
9
5.020 5.520 6.010 6.500 6.990 7.470 7.960 8.440 8.920 9.410 9.890
3.444 3.979 4.395 4.921 5.347 5.866 6.300 6.814 7.254 7.764 8.207 8.713 9.161 9.666
1.813 3.375 ¨ 2.250 3.750 ¨
2.250 2.250 2.125 2.125 2.250 2.250 2.375 2.375 2.375 2.375 2.375 2.375 2.375 2.375 2.375 2.375 2.375 2.500 2.500 2.500 2.500 2.500 2.500 2.500 3.750 3.750 3.750 4.000 4.000 4.000 4.500 4.500
B B B B B B B B B B B B B B B B B B B B B B B B C C C C C C C C
S S S S S D D D D D D D D D D D D D D D D D D D D D D
Inside Width
1 ½ " Pitch: PLAIN BORE
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 32 35 36 40 42 45 48 54 60 70 80
Roller Diameter
2.375 2.750 3.000 3.250 3.250 3.500 3.500 3.500 3.500 3.500 3.500 3.500 3.500 3.500 3.500 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 5.250 5.375 5.375
3.563 4.125 4.563 4.750 4.750 5.250 5.250 5.250 5.250 5.250 5.250 5.250 5.250 5.250 5.250 6.000 6.000 6.000 6.000 6.000 6.000 6.000 6.000 6.000 6.000 6.000 6.000 7.000 7.500 7.500
Nominal Tooth Width:
A 120 B 17 How to Order Code: Example Model # for 120 Pitch Plain Bore Carbon Steel Sprockets
Altered !!
Chain Pitch in Inches
Hub Type
Number of Teeth
10.370 10.850 11.330 11.810 12.290 12.770 13.250 13.730 14.210 15.170 16.130 17.570 18.050 19.960 20.920 22.350 23.790 26.650 29.520 34.300 39.080
9
16 17 18 19 20 21 22 16 17 18 19 20 21 22 54 60 70 80
23 24 25 26 27 28 30 23 24 25 26 27 28 30
32 35 36 40 42 45 48 32 35 36
54 60 70 80
10 11 12 13 14 15
10.115 10.617 11.070 11.569 12.024 12.522 13.476 14.428 15.842 16.336 18.244 19.198 20.615 22.060 24.922 27.786 32.559 37.332
A: No Hub
Extension
9
10 11 12 13 14 15 40 42 45 48
A: Alteration Required
120: 1½" Pitch
B: Hub Extension One Side
103.00 140.00 160.00 216.00 284.00
D 113.00 D 133.00 D 160.00 D 206.00 D 254.00
C: Hub Extension Both Sides
!! Alteration field only to be denoted if a deviation from standard is required. Please reference Alterations in engineering section, page 210.
TOOTH (NOMINAL) .924˝ NOMINAL
TOOTH (NOMINAL) .924˝ NOMINAL
TOOTH (NOMINAL) .924˝ NOMINAL
TOOTH (NOMINAL) .924˝ NOMINAL
* Dimensions shown allow for standard keyway with set screw at 90 degrees ¨ Has recessed groove in hub for chain clearance
LTB
LTB
LTB
TYPEA
STYLED TYPEB
STYLES TYPEB
STYLED TYPEC
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