BK57 pulleys are 5.45" in diameter and are also commonly known as BK57 sheaves. Our pulleys are manufactured in accordance with ARPM standard IP20 for safe operation and interchangeability with other brands. Additionally, we stock a complete line of premium A-seriesand B-series v-belts. For additional information or formal quotes please contact us and we will be happy to assist you.
Key-Way Size Chart:
Bore Range
Key-Way Size
1/2"
None
5/8" - 7/8"
3/16" X 3/32"
15/16" - 1-1/4"
1/4" X 1/8"
1-7/16"
3/8" X 3/16"
BK57 Pulley Request Form
To get a quote on BK57 pulles/ sheaves fill out the request for quote form and someone from our customer service team will contact you.