B128 B/5L Classic V-Belts, Special Order Items - Lead Time 10 Business Days
B128 - Width: 5/8"; OC -Length: 131"
Understanding the Part Number
B – The B stands for a “B” section v-belt. This is considered a “Classic” v-belt style that has a top width of 21/32 (0.656) inches, but is commonly referred to as a 5/8 (0.625) inch belt. The thickness of the belt is 13/32 (0.406) inches.
128– 128 inches is the inside circumference of the belt. For B-section v-belts, the outside circumference is found by adding 3 inches to the inside length of the belt. So, the outside circumference of the B128 belt is 131 inches (128+3).