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

|
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 |