Single Groove Sheaves for “4L” “5L” & “B” Belts
BK Sheaves are precision machined from gray cast iron, statically balanced, painted with baked enamel finish and individually packaged. Sheaves are furnished with standard keyways & set screws.
Click on a Part Number below for detail information. Contact us with questions or Request a Quote.
| Part Number | OD (inch) | 4L Pitch | 5L+B Pitch | Type | F (inch) | L (inch) | P (inch) | C (inch) | Stock Bores (inch) |
|---|---|---|---|---|---|---|---|---|---|
| BK24 | 2.40 | 1.80 | 2.20 | 1 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8 |
| BK25 | 2.50 | 1.90 | 2.30 | 1 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8,1 |
| BK26 | 2.60 | 2.00 | 2.40 | 1 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8 |
| BK27 | 2.70 | 2.10 | 2.50 | 2 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8,1 |
| BK28 | 2.95 | 2.20 | 2.60 | 2 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8,1, 1-1/8 |
| BK30 | 3.15 | 2.40 | 2.80 | 2 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8, 1 |
| BK32 | 3.35 | 2.60 | 3.00 | 2 | 13/16 | 1-1/16 | 13/32 | 5/32 | 1/2, 5/8, 3/4, 7/8,1, 1-1/8 |
| BK34 | 3.55 | 2.80 | 3.20 | 2 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8,1, 1-1/8 |
| BK36 | 3.75 | 3.00 | 3.50 | 2 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8 |
| BK40 | 3.95 | 3.20 | 3.70 | 2 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8 |
| BK45 | 4.25 | 3.50 | 4.00 | 2 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8 |
| BK47 | 4.45 | 3.70 | 4.20 | 2 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8 |
| BK50 | 4.75 | 4.00 | 4.40 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8 |
| BK52 | 4.95 | 4.20 | 4.60 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8 |
| BK55 | 5.25 | 4.50 | 4.90 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-3/16 |
| BK57 | 5.45 | 4.70 | 5.10 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 5/8, 3/4, 7/8, 15/16, 1, 1-1/8 |
| BK60 | 5.75 | 5.00 | 5.40 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-3/16 |
| BK62 | 5.95 | 5.20 | 5.60 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 1/2, 5/8, 3/4, 7/8, 15/16, 1, 1-1/8, 1-3/16 |
| BK65 | 6.25 | 5.50 | 5.90 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 5/8, 3/4, 1, 1-1/8 |
| BK67 | 6.45 | 6.70 | 6.10 | 3 | 7/8 | 1-5/32 | 13/32 | 1/8 | 5/8, 3/4, 1, 1-1/8 |
| BK70 | 6.75 | 6.00 | 6.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 5/8, 3/4, 7/8, 15/16, 1, 1-1/8, 1-3/16, 1-7-16 |
| BK72 | 6.95 | 6.20 | 6.60 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8, 1-3/8 |
| BK75 | 7.25 | 6.50 | 6.90 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8, 1-3/8 |
| BK77 | 7.45 | 6.70 | 7.10 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8, 1-3/8 |
| BK80 | 7.75 | 7.00 | 7.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 5/8, 3/4, 7/8, 1, 1-1/8, 1-3/16, 1-1/4, 1-3/8, 1-7/16 |
| BK85 | 8.25 | 7.50 | 7.90 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8, 1-3/8, 1-7/16 |
| BK90 | 8.75 | 8.00 | 8.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 7/8, 15/16, 1, 1-1/8, 1-3/16, 1-3/8, 1-7/16 |
| BK95 | 9.25 | 8.50 | 8.90 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8, 1-3/8, 1-7/16 |
| BK100 | 9.75 | 9.00 | 9.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 7/8, 15/16, 1, 1-1/8, 1-3/16, 1-1/4, 1-3/8, 1-7/16 |
| BK105 | 10.25 | 9.50 | 9.90 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 1, 1-3/8, 1-7/16 |
| BK110 | 10.75 | 10.00 | 10.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8, 1-3/16, 1-3/8, 1-7/16 |
| BK115 | 11.25 | 10.50 | 10.90 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 1, 1-3/8, 1-7/16 |
| BK120 | 11.75 | 11.00 | 10.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/4, 1-3/16, 1-7-16 |
| BK130 | 12.75 | 12.00 | 12.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-1/8 1-1/4, 1-3/16, 1-7/16 |
| BK140 | 13.75 | 13.00 | 13.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 3/4, 1, 1-3/16, 1-7/16 |
| BK160 | 15.75 | 15.00 | 15.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 1, 1-1/8 1-1/4, 1-3/16, 1-7/16 |
| BK190 | 18.75 | 18.00 | 18.40 | 3 | 7/8 | 1-15/32 | 21/32 | 1/16 | 1, 1-1/4, 1-3/16, 1-7/16 |
AK Sheaves are precision machined from gray cast iron, statically balanced, painted with baked enamel finish and individually packaged. Sheaves are furnished with standard keyways & set screws.
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