Collection: BK-Series Pulleys

BK-Series Pulleys for V-Belts

BK pulleys are manufactured for B-series v-belts, BX v-belts, 5L belts, as well as A-Series v-belts. BK pulleys range in diameter from 2.40" to 18.25" but custom ones are also available upon request.

BK-Series Pulley Size Chart

Size
Outside Diameter
Pitch Diameter (4L/A)
Pitch Diameter (5L/B)
Type
Dimension (F)
Dimension (L)
Dimension (P)
Dimension (C)
Pulley Weight
BK24 2.40" 1.80" 2.20" 1 13/16" 1-1/16" 13/32" 5/32" 0.4 LBS
BK25 2.50" 1.90" 2.30" 1 13/16" 1-1/16" 13/32" 5/32" 0.5 LBS
BK26 2.60" 2.00" 2.40" 1 13/16" 1-1/16" 13/32" 5/32" 0.6 LBS
BK27 2.70"
2.10" 2.50" 2 13/16" 1-1/16" 13/32" 5/32" 0.6 LBS
BK28 2.95" 2.20" 2.60" 2 13/16" 1-1/16" 13/32" 5/32" 0.8 LBS
BK30 3.15" 2.40" 2.80" 2 13/16" 1-1/16" 13/32" 5/32" 0.8 LBS
BK32 3.35" 2.60" 3.00" 2 13/16" 1-1/16" 13/32" 5/32" 0.8 LBS
BK34 3.55" 2.80" 3.20" 2 7/8" 1-5/32" 13/32" 1/8" 1.3 LBS
BK36 3.75" 3.00" 3.40" 2 7/8" 1-5/32" 13/32" 1/8" 1.5 LBS
BK40 3.95" 3.20" 3.60" 2 7/8" 1-5/32" 13/32" 1/8" 1.5 LBS
BK45 4.25" 3.50" 3.90" 2 7/8" 1-5/32" 13/32" 1/8" 1.8 LBS
BK47 4.45" 3.70" 4.10" 2 7/8" 1-5/32" 13/32" 1/8" 1.9 LBS
BK50 4.75" 4.00" 4.40" 3 7/8" 1-5/32" 13/32" 1/8" 2.0 LBS
BK52 4.95" 4.20" 4.60" 3 7/8" 1-5/32" 13/32" 1/8" 2.0 LBS
BK55 5.25" 4.50" 4.90" 3 7/8" 1-5/32" 13/32" 1/8" 2.2 LBS
BK57 5.45" 4.70" 5.10" 3 7/8" 1-5/32" 13/32" 1/8" 2.3 LBS
BK60 5.75" 5.00" 5.40" 3 7/8" 1-5/32" 13/32" 1/8" 2.3 LBS
BK62 5.95" 5.20" 5.60" 3 7/8" 1-5/32" 13/32" 1/8" 2.4 LBS
BK65 6.25" 5.50" 5.90" 3 7/8" 1-5/32" 13/32" 1/8" 2.7 LBS
BK67 6.45" 5.70" 6.10" 3 7/8" 1-5/32" 13/32" 1/8" 2.8 LBS
BK70 6.75" 6.00" 6.40" 3 7/8" 1-15/32" 21/32" 1/16" 3.3 LBS
BK72 6.95" 6.20" 6.60" 3 7/8" 1-15/32" 21/32" 1/16" 3.9 LBS
BK75 7.25" 6.50" 6.90" 3 7/8" 1-15/32" 21/32" 1/16" 3.9 LBS
BK77 7.45" 6.70" 7.10" 3 7/8" 1-15/32" 21/32" 1/16" 4.1 LBS
BK80 7.75" 7.00" 7.40" 3 7/8" 1-15/32" 21/32" 1/16" 4.4 LBS
BK85 8.25" 7.50" 7.90" 3 7/8" 1-15/32" 21/32" 1/16" 5.0 LBS
BK90 8.75" 8.00" 8.40" 3 7/8" 1-15/32" 21/32" 1/16" 5.0 LBS
BK95 9.25" 8.50" 8.90" 3 7/8" 1-15/32" 21/32" 1/16" 5.4 LBS
BK100 9.75" 9.00" 9.40" 3 7/8" 1-15/32" 21/32" 1/16" 5.6 LBS
BK105 10.25" 9.50" 9.90" 3 7/8" 1-15/32" 21/32" 1/16" 5.8 LBS
BK110 10.75" 10.00" 10.40" 3 7/8" 1-15/32" 21/32" 1/16" 6.4 LBS
BK115 11.25" 10.50" 10.90" 3 7/8" 1-15/32" 21/32" 1/16" 6.9 LBS
BK120 11.75" 11.00" 11.40" 3 7/8" 1-15/32" 21/32" 1/16" 7.4 LBS
BK130 12.75" 12.00" 12.40" 3 7/8" 1-15/32" 21/32" 1/16" 8.4 LBS
BK140 13.75" 13.00" 13.40" 3 7/8" 1-15/32" 21/32" 1/16" 9.4 LBS
BK160 15.75" 15.00" 15.40" 3 7/8" 1-15/32" 21/32" 1/16" 11.4 LBS
BK190 18.75" 18.00" 18.40" 3 7/8" 1-15/32" 21/32" 1/16" 13.4 LBS