No. 50
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. 50 QD ® Sprocket Dia.
Dimensional Data QD® Sprockets
50
No. 50 5/8" Pitch: QD ®
No. Teeth
Outside Dia.
QD ® Bushing #
MAX Bore *
Hub Dia.
Hub Type
Hub Style
Weight Lbs.
LTB
X
Y
L
F
Pitch
5/8" 3/8"
Inside Width
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 72 80 84 96
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 6.320 6.720 7.320 7.520 8.320 8.720 9.310 9.910
JA JA JA JA JA SH SH SH
1.250 1.922 0.625 1.125 1.125 0.656 2.063 1.250 2.063 0.625 1.125 1.125 0.656 2.063 1.250 2.125 0.625 1.125 1.125 0.656 2.063 1.250 2.250 0.625 1.125 1.125 0.656 2.063 1.250 2.250 0.625 1.125 1.125 0.656 2.063 1.688 2.750 0.813 1.437 1.437 0.906 2.688 1.688 2.875 0.813 1.437 1.437 0.906 2.688 1.688 3.000 0.813 1.437 1.437 0.906 2.688 2.000 3.313 0.750 1.500 1.500 0.969 3.188 2.000 3.500 0.750 1.500 1.500 0.969 3.188 2.000 3.500 0.750 1.500 1.500 0.969 3.188 2.000 3.500 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.000 3.625 0.750 1.500 1.500 0.969 3.188 2.625 3.625 1.250 2.125 2.125 1.531 3.875 2.625 4.250 1.250 2.125 2.125 1.531 3.875 2.625 4.250 1.250 2.125 2.125 1.531 3.875 2.625 4.250 1.250 2.125 2.125 1.531 3.875 2.938 5.000 1.250 2.250 2.250 1.656 4.625 2.938 5.000 1.250 2.250 2.250 1.656 4.625 2.938 5.000 1.250 2.250 2.250 1.656 4.625 2.938 5.000 1.250 2.250 2.250 1.656 4.625
B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B
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
0.34 0.40 0.52 0.60 0.68 0.84 1.04 1.24 1.20 1.32 1.42 1.58 1.70 1.86 2.00 2.12 2.32 2.64 2.98 3.62 3.64 4.74 5.40 5.90 6.66 9.68
Roller Diameter
0.400" 0.343"
Nominal Tooth Width:
A 50 SH 19 How to Order Code: Example Model # for 50 Pitch QD ® Carbon Steel Sprockets
SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS SDS
Altered !!
Chain Pitch in Inches
Number of Teeth
QD ® Hub Type
12
14
16
JA: QD ® Hub 12 - 16 tooth sprocket
13
15
17
19
SH: QD ® Hub 17 - 19 tooth sprocket
18
20
24
28
36
48
21
25
30
40
SDS: QD ® Hub 20 - 48 tooth sprocket
A: Alteration Required
50: 5/8" Pitch
22
26
32
42
11.110 12.300 14.290 14.690 16.280 17.080 19.470 22.650
SK SK SK SK
23
27
35
45
11.88 15.52 16.44 19.90 22.98 29.88 40.10
54
70
SK: QD ® Hub 54 - 72 tooth sprocket
SF ** SF ** SF ** SF **
60
72
!! Alteration field only to be denoted if a deviation from standard required. Please reference alterations in engineering section
80
96
SF: QD ® Hub 80 - 112 tooth sprocket
112
84
112
!! Alteration field only to be denoted if a deviation from standard is required. Please reference Alterations in engineering section, page 210.
* Please reference QD ® bushing dimension table on page 196 for specific information on MAX Bore and keyway data. ** = Max Bore with shallow key
Y
Y
TOOTH (NOMINAL) .343˝ NOMINAL
TOOTH (NOMINAL) .343˝ NOMINAL
LTB
LTB
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.
QD ® Bushings
Bushing #
Bore Range
JA SH
0.500 - 1.250" 0.500 - 1.688" 0.500 - 2.000" 0.500 - 2.625" 0.500 - 2.938"
L
L
SDS
SK SF
STYLEE TYPEB X
STYLES TYPEB X
www. ustsubaki .com
72
73
QD ® is a registered trademark of, and is used under license agreement from Emerson Electric Co.
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