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1TB Split Taper Bushed Pulleys

1TB series pulleys are manufactured for A, AX, AA, 4L, B, BX, BB, and 5L v-belts and range from 3.75" to 38.35" in diameter. Depending on the pulley size they are made to use with P1 taper bushings or Q1 taper bushings, which we also stock. The majority of our 1TB pulleys are manufactured from a high-strength grade 35 cast iron, are phosphate-coated and painted for anti-corrosion, and all of them are balanced at the factory for smooth machinery operation.

1TB Style Pulley Size Chart


Size Bushing Type Pitch Diameter (4L/A) Pitch Diameter (5L/B) Outside Diameter Type (O.L.) (L) (P) (C) (H) (F) (G) (X) (E) Pulley Weight (LBS)
1TB34 P1 3.0" 3.4" 3.75" 2 2-5/16" 1-15/16" 1-1/16" 1/8" 3" 1" 5/8" 1-7/16" 1/4" 2.0
1TB36 P1 3.2" 3.6" 3.95" 2 2-5/16" 1-15/16" 1-1/16" 1/8" 3" 1" 5/8" 1-7/16" 1/4" 2.3
1TB38 P1 3.4" 3.8" 4.15" 2 2-5/16" 1-15/16" 1-1/16" 1/8" 3" 1" 5/8" 1-7/16" 1/4" 2.6
1TB40 P1 3.6" 4.0" 4.35" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 2.1
1TB42 P1 3.8" 4.2" 4.55" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 2.4
1TB44 P1 4.0" 4.4" 4.75" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 2.8
1TB46 P1 4.2" 4.6" 4.95" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 3.1
1TB48 P1 4.4" 4.8" 5.15" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 3.5
1TB50 P1 4.6" 5.0" 5.35" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 3.9
1TB52 P1 4.8" 5.2" 5.55" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 4.1
1TB54 P1 5.0" 5.4" 5.75" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 4.6
1TB56 P1 5.2" 5.6" 5.95" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 5.1
1TB58 P1 5.4" 5.8" 6.15" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 5.6
1TB60 P1 5.6" 6.0" 6.35" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 6.0
1TB62 P1 5.8" 6.2" 6.55" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 5.5
1TB64 P1 6.0" 6.4" 6.75" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 5.8
1TB66 P1 6.2" 6.6" 6.95" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 5.9
1TB68 P1 6.4" 6.8" 7.15" 10 2-3/16" 1-15/16" 5/8" 5/16" 3" 1" -- -- 1/4" 6.1
1TB70 P1 6.6" 7.0" 7.35" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 6.4
1TB74 P1 7.0" 7.4" 7.75" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 7.3
1TB80 P1 7.6" 8.0" 8.35" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 7.8
1TB86 P1 8.2" 8.6" 8.95" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 8.6
1TB90 P1 8.6" 9.0" 9.35" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 8.9
1TB94 P1 9.0" 9.4" 9.75" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 9.1
1TB110 P1 10.6" 11.0" 11.35" 16 2-3/16" 1-15/16" 25/32" 5/32" 3" 1" 5/8" 1-5/16" 1/4" 11.1
1TB124 Q1 12.0" 12.4" 12.75" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 17.8
1TB136 Q1 13.2" 13.6" 13.95" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 18.2
1TB154 Q1 15.0" 15.4" 15.75" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 20.3
1TB160 Q1 15.6" 16.0" 16.35" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 22.0
1TB184 Q1 18.0" 18.4" 18.75" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 27.5
1TB200 Q1 19.5" 20.0" 20.35" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 27.2
1TB250 Q1 24.5" 25.0" 25.35" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 42.4
1TB300 Q1 29.5" 30.0" 30.35" 16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 56.0
1TB380 Q1 37.5" 38.0" 38.35"
16 2-25/32" 2-1/2" 1-1/8" 3/8" 4-1/8" 1" 3/4" 1-3/4" 9/32" 78.0


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