Description
29-8MX21-1108 Powerhouse® MX Timing Pulley, 29 Teeth, 8MX Pitch
The 29-8MX21-1108 is a 29-tooth 8 mm MX high torque timing pulley. It mounts with an industry-standard bushing, sold separately, machined from steel 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 | 29-8MX21-1108 |
| Teeth | 29 |
| Pitch | 8 mm MX high torque |
| For Belt Width | 21mm |
| Pitch Diameter | 2.9074 in |
| Outside Diameter | 2.8444 in |
| Flange Diameter | 3.346 in |
| Bore | Accepts 1108 bushing (not included) |
| Face Width | 1.203 in |
| Overall Length | 1.203 in |
| Construction | Taper Lock Hub |
| Flange Material | Steel |
| Material | Steel (no sintered or powdered metal) |
| Finish | Black Oxide |
| Weight | 1.314 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
Belt Compatibility
The 29-8MX21-1108 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 29-8MX21-1108 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Dodge® | 8MX-29S-21-1108 |
| Martin | 8MX29S21-1108 |
| Gates® | 8MX-29S-21 |
| TB Woods® | 8MPC29S21 |
| Regal Rexnord (Browning®) | B8MCS-29-21 |
| Mitsuboshi | 29-8MX21-1108 |
| Grainger | 809RM6 |
| Powerdrive | 29-8MX21-1108 |
| Continental (ContiTech) | 29G-8M-21-1108 |
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 29-8MX21-1108 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 29-8MX21-1108 replace the Dodge 8MX-29S-21-1108?
Yes. Published interchange data crosses the 29-8MX21-1108 directly to the Dodge 8MX-29S-21-1108, as well as Martin 8MX29S21-1108, Gates 8MX-29S-21, TB Woods 8MPC29S21. Verify dimensions and bore before ordering.
Does the 29-8MX21-1108 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 29-8MX21-1108?
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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