QD WELD-ON HUBS
Tsubaki offers the most complete line of “QD” Style weld-on hubs for insertion and welding to produce “B” style sprockets, sheaves, and other applications. To provide greater strength for this type of shaft locking mechanism and reduce heat distortion caused by welding, these hubs are dimensionally the same as our sprocket items. Special dimensional hubs are available per your specifications on a made-to-order basis. All Tsubaki hubs are made from steel bar stock (not powdered or sintered metal). The “QD” Style Weld-On hubs listed below include appropriate tapered bores and mounting holes. QD Weld-On hubs are manufactured with a step for assistance in locating the attached plate. This is shown as the “T” dimension and depending on the width of the plate, the result is either a B-style or C-style sprocket.
All dimensions in inches unless noted.
Use with Bushing #
Catalog Number
Dim. D Dim. P
Dim. L
Dim. T Hub Type Wt. Lbs.
35SHW
SH
3.00
2.875
0.813
0.141
B
.90
40SDSW
SDS
3.500 4.250 3.625 4.250 5.000 3.500 4.250 5.000 6.250 5.000 6.250 7.000 6.250 6.250 7.000 6.250 7.000 8.000 7.000 8.000
3.125 3.875 3.438 4.125 4.625 3.125 3.875 4.625 5.875 4.625 5.875 6.625 5.875 5.875 6.625 5.875 6.625 7.500 6.625 7.500 9.500
0.750 1.250 0.750 1.250 1.250 0.750 1.250 1.250 1.625 1.250 1.625 2.500 1.625 1.625 2.500 1.625 2.500 3.188 2.500 3.188 5.188
0.250 0.250 0.313 0.313 0.313 0.438 0.438 0.438 0.438 0.563 0.563 0.563 0.688 0.688 0.688 0.875 0.875 0.875 1.094 1.125 2.250
B B B B B B B B B B C C B C C B C C B C
1.00 2.40 1.00 2.40 3.70 1.00 2.40 3.60 7.80 3.50 7.70
40SKW
SK
50SDSW
SDS
50SKW 50SFW
SK SF
60SDSW
SDS
60SKW 60SFW
SK SF
60EW
E
L
80SFW
SF
80EW 80FW
E F E E F E F J F J
14.70
100EWB 100EWC 100FW 120EW 120FW 120JW 160FW 160JW 160MW
7.50 7.50
14.60
7.40
14.30 23.70 14.00 23.30 59.30
T
Type C
M
10.000
C1
L
L
T
T
Type C
Type B and Type C 1
L
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