V Belt and V-ribbed belts may be banded together for mu […]
V Belt and V-ribbed belts may be banded together for multi-sheave drives. The number of bands or ribs should be specified for products with multiple bands. Belt materials exhibit different properties for strength, speed rating, power transmission capability, and weight. Materials of construction may include neoprene, polyurethane, rubber, and urethane. SomeV-belts and V-ribbed belts are reinforced. Typically, the reinforcement takes the form of cords or bands running circumferentially along the belt near the top or at the pitch line. V-belts and V-ribbed belts that are made of fiberglass, polyester, and steel are also available.
In terms of features, V-belts and V-ribbed belts may be double-sided, cogged, variable speed, anti-static, truly endless, or open-ended. A double-sided V-belt has a V-profile on both sides of belt and a hexagonal cross section. With a cogged V-belt, the inside of the belt is notched for gripping. Sometimes, there is an X designation in the belt specification. Variable speed V-belts and V-ribbed belts are wider than standard belts. As their name suggests, they are designed for variable-speed drives. Anti-static V-belts belts help prevent buildup of static electricity. Truly endless belts are not spliced, but are instead manufactured as one closed loop. Open-ended belts come in a roll and may be cut and spliced to desired length and number of teeth.
Did you know that improperly tensioned or misaligned V-belts, typically used on fans and pumps can be robbing you of energy!
An improperly maintained drive may use 20-25% more energy to operate, in addition to diminished performance, loss of operating capacity and heat generated by slippage and misalignment friction.
Belt life may also be reduced, often resulting in higher replacement parts usage and unanticipated downtime.
Follow the manufacturers' instructions for proper alignment and tensioning.
A good rule of thumb with the drive belts seated and power locked out, the belts should have 1/64" of deflection per inch of span between the centerline of the drive sheaves.
The article from Automotivedrivingbelt.com