Description
Megadyne 640J21 Micro-V Belt, J
The Megadyne 640J21 is a multi-rib (Micro-V) belt in the J rib profile with a 64.0" effective length and 1.93" (21 ribs). The closely spaced ribs deliver high power density and run smoothly on small-diameter pulleys, the standard choice for compact serpentine and accessory drives. It is a direct replacement for Jason Industrial 640J21.
| Specification | Value |
|---|---|
| Part Number | 640J21 |
| Cross Section | J |
| Construction | Curvilinear rib |
| Width | 1.93" (21 ribs) |
| Number of Ribs | 21 |
| Effective Length | 64.0" |
| Temperature Range | -22°F to 176°F |
Applications
- Serpentine and accessory drives
- Compact, high-speed power transmission on small pulleys
- Fitness equipment and small machinery
- Drives where one multi-rib belt replaces multiple V-belts
Cross-References
The J rib profile and length are industry-standard, so the 640J21 interchanges with Gates 640J21, Dayco 640J21, Continental 640J21, and Jason Industrial 640J21. Browse the micro v belts collection.
Frequently Asked Questions
What is the Megadyne 640J21 used for?
The 640J21 is used for serpentine and accessory drives, such as compact, high-speed power transmission on small pulleys and fitness equipment and small machinery.
What are the dimensions of 640J21?
The 640J21 has a 1.93" (21 ribs) width, a 64.0" effective length in the J profile.
Is 640J21 interchangeable with Gates 640J21?
Yes. The J rib profile and length are industry-standard, so the Megadyne 640J21 interchanges with Gates, Dayco, Continental, and Jason Industrial belts of the same designation.
What is the temperature rating of 640J21?
The 640J21 is rated for continuous operation from -22°F to 176°F.
Does 640J21 ship from Houston?
Yes. The 640J21 ships from the Texas Belting & Supply warehouse in Houston, TX, with same-day shipping on stock items. Call (888) 203-2358 for stock and lead time.
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