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Product Specifications:
| Item | V-Belt Sheave |
| 4l Pitch Dia. | 2.4" |
| 4l, A, Or Ax Belt Pitch Dia. | 2.4" |
| 4la Or A Belt Pitch Dia. | 2.4" |
| 5l Pitch Dia. | 2.8" |
| 5l, B, Or Bx Belt Pitch Dia. | 2.8" |
| A Pitch Dia. | 2.4" |
| Ax Pitch Dia. | 2.4" |
| B Pitch Dia. | 2 4/5" |
| Belt Type | 4L |
| Bore Dia. | 7/8" |
| Bore Type | Fixed |
| Bore-to-size Bore Dia. | 7/8" |
| Bushing Required | None |
| Bx Pitch Dia. | 2.8" |
| Construction | Web |
| Datum Dia. | 2 4/5" |
| Dimension L | 1.09" |
| Dimensions E | 11/25" |
| Dimensions L | 1.09" |
| Face Width | 0.81" |
| For Belt Section | 4L, 5L, A, Ax, B, Bx |
| For V Belt Type | Classical, Cogged |
| Hub Dia. | 1 13/16" |
| Hub Projection | 0.438" |
| Hub Type | One Side |
| Included | Set Screw |
| Industry Number | BK3078 |
| Key Way Size | 0.187" x 0.093" |
| Keyway | Yes |
| Keyway Depth | 3/32" |
| Keyway Width | 3/16" |
| Length Through Bore | 1 1/16" |
| Material | Cast Iron |
| Material Fabrication | Cast |
| Max. Speed | 7940 RPM |
| No. Of Grooves | 1 |
| No. Of Set Screws | 1 |
| Outside Dia. | 3.15" |
| Overall Length | 1 1/4" |
| Overall Width | 1 1/4" |
| Pitch Dia. | 2.4" (4L, A), 2.8" (5L, B) |
| Pulley Construction | Webbed |
| Pulley Industry Number | BK30 |
| Pulley Series | Series BK |
| Set Screw Included | Yes |
Shipping Info:
| Ship weight (kg) | 0.68 |
| Ship height (cm) | 9.14 |
| Ship length (cm) | 8.89 |
| Ship width (cm) | 3.81 |
| HS code | 8483509040 |
| Country of Origin | US |
Product Variants
| Product | Model | Belt Type | Face Width | Pitch Dia. | Bore Dia. | No. Of Grooves | Datum Dia. | Bore Type | Dimensions L | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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AK3212 | 3L | - | 2.66" (3L), 3" (4L, A) | 1/2" | 1 | 3" | Fixed | 0.94" | €33.70 | |
![]() |
AK3258 | 3L | - | 2.66" (3L), 3" (4L, A) | 5/8" | 1 | 3" | Fixed | 0.94" | €33.70 | |
![]() |
AK3234 | 3L | - | 2.66" (3L), 3" (4L, A) | 3/4" | 1 | 3" | Fixed | 0.94" | €33.70 | |
![]() |
AK32X7/8 | 3L | - | 2.66" (3L), 3" (4L, A) | 7/8" | 1 | 3" | Fixed | 0.94" | €39.79 | |
![]() |
AK321 | 3L | - | 2.66" (3L), 3" (4L, A) | 1" | 1 | 3" | Fixed | 0.94" | €33.70 | |
![]() |
AK1041 | 3L | 3/4" | 10" (4L, A), 9.66" (3L) | 1" | 1 | 10" | Fixed | 1.47" | €132.62 | |
![]() |
AK10434 | 3L | 3/4" | 10" (4L, A), 9.66" (3L) | 3/4" | 1 | 10" | Fixed | 1.47" | €132.62 |
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Contact us
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TB WOODS BK3078 FHPBoredtosize V-Belt Sheave, Cast Iron, 4L Type Belt, 1.8125 inch Hub Dia.
€37.56 /unit



