What size is a 4L belt?
V-Belts – Fractional Horsepower (FHP) Section 4L – Size 1/2″ (12.7mm) X 5/16″ (7.9mm)
| V-Belt No. | Outside Length Inches |
|---|---|
| 4L300 | 30 |
| 4L310 | 31 |
| 4L320 | 32 |
| 4L330 | 33 |
How is a V-belt cross section measured?
Use a cloth measuring tape (not a steel one) and wrap it around the outside of the belt. You also use a thin string to take this measurement and place it on a steel tape to get the correct length. Next, for “A” Belts (1/2” width) subtract two-inches from the outside measurement to select the correct V-belt.
What is B and V-belt?
V belts are drive belts that are wedge shaped, these B section belts measure 17mm across and 8mm down. B Section V belts correspond with the SPB section vee Pulleys they come in 1,2,3 or 4 groove. Bearingtech offer a range of delivery choices so your belt can get to you quickly.
What do the letters mean on a V belt?
Automotive belts start with either 4L (12.5mm wide) or 3L (9.5mm). The number following it is the outside length of the belt in tenths of inches. The inside length of the belt is typically 2″ less for a 4L belt, and 1-1/2″ less for a 3L belt. An example would be 4L460, which would be 46″ long outside, 44″ inside.
What are FHP belts?
Fractional Horsepower Belt: FHP light-duty V-belts are often used as single belts on drives of 1 horsepower or less.
What is the difference between a 4L belt and an a belt?
While A and B belts can be an excellent upgrade and substitute for 4L and 5L v-belts, the opposite is not true. 4L and 5L belts have lower horsepower ratings and design life compared to Classical A and B series v-belts. Using a 4L or 5L belt in an A or B application will result in reduced performance and belt life.
What is belt cross section?
V-belt cross sections can be identified by their top width and depth dimensions. For example, a v-belt with a top width of 21/32” and a depth of 7/16” is a “B” belt. You can also use our Browning Belt Rule that includes a gauge to help easily identify belt type.
How do you read V-belt numbers?