About Sizing Belts
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V-Belts
2L, 3L, 4L, and 5L V-belts are commonly used on light duty drives with fractional-horsepower motors. A, B, and C V-belts are for medium and heavy duty drives.
For technical drawings and 3-D models, click on a part number.
| Belt Trade No. | Outer Circumference | Material | Reinforcement Material | Color | Each | |
3L Trade Size—3/8" Wd. × 7/32" Thick. | ||||||
|---|---|---|---|---|---|---|
| 3L490 | 49" | EPDM Rubber | Polyester Plastic | Black | 0000000 | 000000 |
4L Trade Size—1/2" Wd. × 5/16" Thick. | ||||||
| 4L490 | 49" | EPDM Rubber | Polyester Plastic | Black | 0000000 | 00000 |
5L Trade Size—21/32" Wd. × 3/8" Thick. | ||||||
| 5L490 | 49" | EPDM Rubber | Polyester Plastic | Black | 0000000 | 00000 |
A Trade Size—1/2" Wd. × 5/16" Thick. | ||||||
| A47 | 49" | EPDM Rubber | Polyester Plastic | Black | 00000000 | 00000 |
B Trade Size—21/32" Wd. × 13/32" Thick. | ||||||
| B46 | 49" | Buna-N/SBR Rubber | Polyester Plastic | Black | 00000000 | 00000 |
Precision-Matched V-Belts
Ensure even load distribution on drives with multiple belts. These are matched to the trade size within a tight tolerance for better performance and reduced wear compared to standard A- and B-section V-belts.
For technical drawings and 3-D models, click on a part number.
Cogged V-Belts
More flexible than smooth V-belts, these have notches that allow them to bend around small-diameter pulleys and accommodate twists and turns on curved drives.
For technical drawings and 3-D models, click on a part number.
High-Capacity Narrow-Wedge Cogged V-Belts
A narrow belt profile transmits up to three times the horsepower of standard cogged V-belts for use on heavy duty drives with shock loads. Notches increase flexibility for bending around small-diameter pulleys and dissipate heat for a long service life.
For technical drawings and 3-D models, click on a part number.
| Belt Trade No. | Outer Circumference | Material | Reinforcement Material | Color | Each | |
5VX Trade Size—5/8" Wd. × 35/64" Thick. | ||||||
|---|---|---|---|---|---|---|
| 5VX490 | 49" | EPDM Rubber | Polyester Plastic | Black | 000000000 | 000000 |
Cogged V-Belts for Variable-Speed Pulleys
A wide profile allows these belts to ride up and down the groove in variable-speed pulleys to handle a wide range of speed ratios. Notches increase flexibility for bending around small-diameter pulleys and dissipate heat for a long service life.
For technical drawings and 3-D models, click on a part number.
| Belt Trade No. | Outer Circumference | Material | Reinforcement Material | Color | Each | |
1922V Trade Size—1 3/16" Wd. × 13/32" Thick. | ||||||
|---|---|---|---|---|---|---|
| 1922V484 | 49" | Neoprene Rubber | Polyester Plastic | Black | 0000000 | 000000 |
Banded V-Belts
Also known as serpentine belts, these have multiple bands that function as a single unit for consistent drive performance and even load distribution. They handle shock loads better than standard belts.
For technical drawings and 3-D models, click on a part number.
Double V-Belts
Grooves on both sides of these belts transmit equal power, making them ideal for serpentine drives.
For technical drawings and 3-D models, click on a part number.
| Belt Trade No. | Outer Circumference | Material | Reinforcement Material | Color | Each | |
BB Trade Size—21/32" Wd. × 17/32" Thick. | ||||||
|---|---|---|---|---|---|---|
| BB45 | 49" | Neoprene Rubber | Polyester Plastic | Black | 0000000 | 000000 |