SPLIT TAPER BUSHINGS
SPLIT TAPER WELD-ON HUBS
Tsubaki offers a complete line of Split Taper style 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 reduce heat distortion caused by welding, these hubs are dimensionally the same as our sprocket items. Special dimension hubs are available on a made-to-order basis. All Tsubaki hubs are made from steel bar stock (not powdered or sintered metal). The Split Taper style weld-on hubs listed below include appropriate tapered bores and mounting holes.
B, P, Q & R Bushings
All dimensions in inches unless noted.
Dimensions
Tapped Holes
Weight (Lbs.)
Hub Bushing
OD
A
B
C
K
V
W
X
a(0)
d
No.
Size
G1W H1W P1W P2W B1W B2W Q1W Q2W R1W R2W S1W S2W U0W U1W U2W
G H
2.00 2.50 3.00 3.00 3.88 4.50 4.50 4.50 5.75 5.75 6.75 6.75 8.50 8.50 8.50
0.174 0.174 0.292 1.100 0.292 0.709 0.709 1.606 0.709 1.606 0.946 2.963 2.000 2.963 6.016 2.963
1.168 1.621 1.938 1.938 2.623 2.623 2.875 2.875 4.000 4.000 4.625 4.625 6.000 6.000 6.000
1.875 2.375 2.875 2.875 3.750 4.375 4.375 4.375 5.625 5.625 6.500 6.500 8.250 8.250 8.250
1.563 2.000 2.438 2.438 3.125 3.125 3.375 3.375 4.625 4.625 5.375 5.375 7.000 7.000 7.000
0.625 0.875 1.313 2.313 1.313 1.750 1.750 2.750 2.000 4.000 3.313 5.688 3.750 5.625 8.625 6.375
0.625 0.875 0.625 0.625 0.813 0.813 0.875 0.875 1.125 1.125 1.625 1.625 2.000 1.750 1.750 1.750
2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 4
1/4 20 1/4 20 5/16 18 5/16 18 5/16 18 5/16 18 3/8 16 3/8 16 3/8 16 3/8 16 1/2 13 1/2 13 5/8 11 5/8 11 5/8 11 3/4 10
0.4 0.6 1.4 2.5 2.3 4.7 4.4 6.9 7.3
P1 P2
1.094 1.094 1.438 1.438 1.563 1.563 2.188 2.188 2.563 2.563 3.250 3.250 3.250
0.375 0.375 0.500 0.500 0.500 0.500 0.750 0.750 0.750 0.750 1.250 1.250 1.250
60 60 60 60 60 60 60 60 60 60 60 60 60
B B
S Bushings
Q1 Q2 R1 R2 S1 S2 U0 U1 U2
15 17 30 32 45 69
W1W W1
12.50
8.500 12.250 4.563 10.000 1.250
22.50
130
U Bushings
3/4" Taper per Foot on Diameter
3/4" Taper per Foot on Diameter
3/4" Taper per Foot on Diameter
Bolt Size
X
X
φ (Bolt Circle)
φ (Bolt Circle)
A
A
a
K
K
B
C
B
OD
OD
C
B
OD
Bolt Size
Bolt Size
d
d
φ (Bolt Circle)
For Bushings P, B, Q, R, S, and U
For Bushings G and H
For Bushing W
W Bushings
3/4" Taper per Foot on Diameter
3/4" Taper per Foot on Diameter
3/4" Taper per Foot on Diameter Bolt Size
X 3/4" Taper per Foot on Diameter
X 3/4" Taper per Foot on Diameter
X 3/4" Taper per Foot on Diameter
Bolt Size X
X
φ (Bolt Circle)
φ (Bolt Circle)
X
φ (Bolt Circle)
φ (Bolt Circle)
A
A
A
A
A
A
a
a
K
K
K
K
B
C
B
B
C
B
OD
OD
C
C
B
OD
OD
C
OD
C
B
OD
Bolt Size
Bolt Size
Bolt Size
Bolt Size
d
d
d
d
d
d
φ (Bolt Circle)
φ (Bolt Circle)
For Bushings P, B, Q, R, S, and U
For Bushings G and H
For Bushings P, B, Q, R, S, and U
For Bushings G and H
For Bushing W
For Bushing W
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