Description
140-8MX21-2517 Powerhouse® MX Timing Pulley, 14 Teeth, 8MX Pitch
The 140-8MX21-2517 is a 14-tooth 8 mm MX high torque timing pulley. It mounts with an industry-standard bushing, sold separately, machined from ductile iron with a black oxide finish, built for 21mm wide belts. Machined from solid stock, never sintered or powdered metal. Powerhouse® MX pulleys run on the same high torque drives as Gates Poly Chain® GT® Carbon™ and Continental Synchrochain Carbon belts.
Specifications

Dimension key for this construction type. Values for this part number are in the table below.
| Specification | Value |
|---|---|
| Part Number | 140-8MX21-2517 |
| Teeth | 14 |
| Pitch | 8 mm MX high torque |
| For Belt Width | 21mm |
| Pitch Diameter | 14.0357 in |
| Outside Diameter | 13.9727 in |
| Bore | Accepts 2517 bushing (not included) |
| Face Width | 1.203 in |
| Overall Length | 1.75 in |
| Construction | Taper Lock Hub |
| Material | Ductile Iron (no sintered or powdered metal) |
| Finish | Black Oxide |
| Weight | 24.1 lb |
| Country of Origin | United States. ISO 9001:2015 certified manufacturing. |
Applications
- High torque, low speed drives replacing roller chain
- Air cooled heat exchanger (ACHE) fan drives
- Oil and gas pumping equipment
- Material handling and conveyor drives
- Weight-sensitive drives (webbed, lightened construction)
Belt Compatibility
The 140-8MX21-2517 runs 8 mm MX high torque belts in 21mm width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 140-8MX21-2517 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Dodge® | 8MX-140S-21-2517 |
| Martin | 8MX140S21-2517 |
| Gates® | 8MX-140S-21 |
| TB Woods® | 8MPC140S21 |
| Regal Rexnord (Browning®) | B8MCS-140-21 |
| Mitsuboshi | 140-8MX21-2517 |
| Grainger | 809RG0 |
| Powerdrive | 140-8MX21-2517 |
| Continental (ContiTech) | 140G-8M-21-2517 |
Always verify dimensions and bore size before substituting part numbers across manufacturers.
Buying in bulk? Save on volume.
Multi-unit and OEM quantities qualify for volume discounts. Call or email for a quantity quote.
Frequently Asked Questions
What belts fit the 140-8MX21-2517 pulley?
8 mm MX high torque timing belts in 21mm width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 140-8MX21-2517 replace the Dodge 8MX-140S-21-2517?
Yes. Published interchange data crosses the 140-8MX21-2517 directly to the Dodge 8MX-140S-21-2517, as well as Martin 8MX140S21-2517, Gates 8MX-140S-21, TB Woods 8MPC140S21. Verify dimensions and bore before ordering.
Does the 140-8MX21-2517 ship from Houston?
Yes. Stock items ship same day from our Houston, Texas warehouse. Call (888) 203-2358 to confirm availability.
Need a quote on 140-8MX21-2517?
Houston warehouse, same-day shipping on stock items.
Call (888) 203-2358Powerhouse® is a registered trademark of its owner. Poly Chain®, GT®, and Carbon™ are trademarks of Gates Corporation. Synchrochain is a trademark of Continental. All third-party part numbers and trademarks referenced are the property of their respective owners. References are for compatibility identification only and do not imply affiliation or endorsement.
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