250-S5M-640 Timing Belt

The 250-S5M-640 is a timing belt from D&D Global's Dura-Sure Torque - S5M Series line. It transmits power positively with no slip, holding timing between shafts on synchronous drives.

Applications

• Conveyors and indexing drives
• Pumps, compressors, and blowers
• Packaging, processing, and automation equipment
• Positive drives where timing must stay locked with no slip

Browse the full range in Timing Belts, or use our belt identification guide to match an existing part.

Cross-Reference

250-S5M-640 is a standardized industry size, so a 250-S5M-640 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves. For OEM or proprietary numbers, confirm the equivalent before ordering — call (888) 203-2358.

All manufacturer names and part numbers are used for reference and identification purposes only. Texas Belting & Supply is not affiliated with, sponsored by, or endorsed by any other manufacturer.

Frequently Asked Questions

What is 250-S5M-640 used for?

250-S5M-640 is a timing belt used on positive, no-slip drives such as conveyors, pumps, packaging machinery, robotics, and machine tools. Synchronous belts hold timing between shafts, so they suit applications where slip is unacceptable.

What are the dimensions of 250-S5M-640?

250-S5M-640 has a 5 mm tooth pitch, 128 teeth, a belt width of 25 mm, and a 640 mm (Pitch Length). The pitch length is the pitch-line circumference.

What does the S5M in 250-S5M-640 mean?

S5M is a STD (curvilinear) synchronous tooth profile. The belt must match the pulley, so a S5M belt runs only on S5M pulleys.

Does 250-S5M-640 ship from Houston?

Yes. 250-S5M-640 ships from our Houston, Texas warehouse, with same-day shipping on in-stock items. Call (888) 203-2358 to confirm stock and request a quote.