No. 120
QD ® SPROCKET DIMENSIONS
U.S. TSUBAKI STOCK SPROCKETS
HOW TO ORDER
U.S. Tsubaki Stock Sprockets
All dimensions in inches unless noted.
Chain Data Size
No. 120 QD ® Sprockets
Dimensional Data QD ® Sprockets
120
No. Teeth
Outside Dia.
QD ® Bushing #
MAX Bore *
Hub Dia.
Hub Type
Hub Style
Weight Lbs.
120 No.
LTB
X
Y
L
F
Pitch
1 1/2" 1.00" 0.875" 0.924"
Inside Width
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 35 36 40 42 45 48 54 60 70 80
6.500 6.990 7.470 7.960 8.440 8.920 9.410 9.890
SF SF SF SF
2.938 2.938 2.938 2.938 3.500 3.500 3.500 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 4.500 4.500 4.500
4.375 4.625 5.000 5.000 6.125 6.125 6.250 6.250 6.250 6.250 6.250 6.250 6.250 6.250 6.250 6.250 6.250 7.000 7.000 7.000 7.000 7.000 7.000 7.000 8.000 8.000 8.000 8.000
1.250 1.250 1.250 1.250 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 3.188 3.188 3.188
2.250 2.250 2.250 2.250 2.938 2.938 2.938 2.938 2.938 2.938 2.938 2.938 2.938 2.938 2.938 2.938 2.938 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 5.000 5.000 5.000
2.250 1.078 4.625 2.250 1.078 4.625 2.250 1.078 4.625 2.250 1.078 4.625 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.563 6.000 2.625 1.000 6.625 3.625 1.000 6.625 3.625 1.000 6.625 3.625 1.000 6.625 3.625 1.000 6.625 3.625 1.000 6.625 3.625 1.000 6.625 3.625 1.000 6.625 4.500 1.1875 7.250 4.500 1.1875 7.250 4.500 1.1875 7.250
B B B B
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
4.70 6.10 7.40 8.00
Roller Diameter
1 ½ " Pitch: QD ®
Nominal Tooth Width:
E E E E E E E E E E E E E F F F F F F F F J J J
B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
11.20 13.40 14.80 16.50 19.20 19.90 21.60 23.80 25.80 28.10 29.90 34.70 39.40 50.50 59.50 63.40 77.00 83.00 84.00 92.00
How to Order Code: Example Model # for 120 Pitch QD ® Carbon Steel Sprockets
A 120 E
17
10.370 10.850 11.330 11.810 12.290 12.770 13.250 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
Altered !!
Chain Pitch in Inches
Number of Teeth
QD ® Hub Type
12 13 14 16 17 18 35 36 40 60 70 80
15
SF: QD ® Hub 12 - 15 tooth sprocket
19 20 21 42 45 48
22 23 24 54
25 26 28
30
C C C C C C C C C C C
E: QD ® Hub 16 - 30 tooth sprocket
A: Alteration Required
120: 1½" Pitch
F: QD ® Hub 32 - 54 tooth sprocket
114.00 140.00 177.00 222.00
J: QD ® Hub 60 - 80 tooth sprocket
* Please reference QD ® bushing dimension table on page 196 for specific information on MAX Bore and keyway data.
!! Alteration field only to be denoted if a deviation from standard is required. Please reference Alterations in engineering section, page 210.
Y
Y
Y LTB
TOOTH (NOMINAL) .924˝ NOMINAL
LTB
TOOTH (NOMINAL) .924˝ NOMINAL
LTB
TOOTH (NOMINAL) .924˝ NOMINAL
QD ® bushing is not included with the sprocket. They are to be ordered separately. Please refer to the table below for general guidelines. Specific details are found in the Bushing Section of this catalog beginning on page 188.
L
QD ® Bushings
Bushing #
Bore Range
SF
0.500 - 2.938" 0.875 - 3.500" 1.000 - 4.000" 1.500 - 4.500"
E F J
L
L
X
X
STYLES TYPEB X
STYLEE TYPEB1
STYLEE TYPEC
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QD ® is a registered trademark of, and is used under license agreement from Emerson Electric Co.
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