• QD® Weld-on Hubs
U.S. Tsubaki offers the most complete line of QD® and TAPER-LOCK weld-on hubs for insertion and welding to produce “B” style sprockets, sheaves, and other applications without hub protrusion. To provide greater strength for this type of shaft-locking mechanism and to 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 U.S. Tsubaki hubs are made from steel bar stock (not powdered or sintered metal). The QD and TAPER-LOCK weld-on hubs listed below include appropriate tapered bores and mounting holes.
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Item #

Type 

Weight

Use Bushing

D

P

L

T

N/A B N/A 0.900 lb N/A SH N/A 3.000 in N/A 2.875 in N/A 0.812 in N/A 0.141 in
N/A B N/A 1.000 lb N/A SDS N/A 3.500 in N/A 3.125 in N/A 0.750 in N/A 0.250 in
N/A B N/A 2.400 lb N/A SK N/A 4.250 in N/A 3.875 in N/A 1.250 in N/A 0.250 in
N/A B N/A 1.000 lb N/A SDS N/A 3.625 in N/A 3.438 in N/A 0.750 in N/A 0.312 in
N/A B N/A 2.400 lb N/A SK N/A 4.250 in N/A 4.125 in N/A 1.250 in N/A 0.312 in
N/A B N/A 3.700 lb N/A SF N/A 5.000 in N/A 4.625 in N/A 1.250 in N/A 0.312 in
N/A B N/A 1.000 lb N/A SDS N/A 3.500 in N/A 3.125 in N/A 0.750 in N/A 0.438 in
N/A B N/A 2.400 lb N/A SK N/A 4.250 in N/A 3.875 in N/A 1.250 in N/A 0.438 in
N/A B N/A 3.600 lb N/A SF N/A 5.000 in N/A 4.625 in N/A 1.250 in N/A 0.438 in
N/A B N/A 7.800 lb N/A E N/A 6.250 in N/A 5.875 in N/A 1.625 in N/A 0.438 in
N/A B N/A 3.500 lb N/A SF N/A 5.000 in N/A 4.625 in N/A 1.250 in N/A 0.562 in
N/A C N/A 7.700 lb N/A E N/A 6.250 in N/A 5.875 in N/A 1.625 in N/A 0.562 in
N/A C N/A 14.700 lb N/A F N/A 7.000 in N/A 6.625 in N/A 2.500 in N/A 0.562 in
N/A B N/A 7.500 lb N/A E N/A 6.250 in N/A 5.875 in N/A 1.625 in N/A 0.688 in
N/A C N/A 7.500 lb N/A E N/A 6.250 in N/A 5.875 in N/A 1.625 in N/A 0.688 in
N/A C N/A 14.600 lb N/A F N/A 7.000 in N/A 6.625 in N/A 2.500 in N/A 0.688 in
N/A B N/A 7.400 lb N/A E N/A 6.250 in N/A 5.875 in N/A 1.625 in N/A 0.875 in
N/A C N/A 14.300 lb N/A F N/A 7.000 in N/A 6.625 in N/A 2.500 in N/A 0.875 in
N/A C N/A 23.700 lb N/A J N/A 8.000 in N/A 7.500 in N/A 3.188 in N/A 0.875 in
N/A B N/A 14.000 lb N/A F N/A 7.000 in N/A 6.625 in N/A 2.500 in N/A 1.094 in
N/A C N/A 23.300 lb N/A J N/A 8.000 in N/A 7.500 in N/A 3.188 in N/A 1.125 in
N/A C1 N/A 59.300 lb N/A M N/A 10.000 in N/A 9.500 in N/A 5.188 in N/A 2.250 in
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