AK21 pulleys are 2.10" in diameter and are also commonly known as AK21 sheaves. Our pulleys are manufactured in accordance with ARPM standard IP20 for safe operation and interchangeability with other brands. 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"
AK21 Pulley Request Form
To get a quote on AK21 pulleys/ sheaves fill out the request for quote form and someone from our customer service team will contact you.