Description
28-8MXF12X1/2 Powerhouse® MX Timing Pulley, 28 Teeth, 8MX Pitch, 1/2 in Bore
The 28-8MXF12X1/2 is a 28-tooth 8 mm MX high torque timing pulley with a 1/2 in finished bore, machined from steel with a black oxide finish, built for 12mm 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 | 28-8MXF12X1/2 |
| Teeth | 28 |
| Pitch | 8 mm MX high torque |
| For Belt Width | 12mm |
| Pitch Diameter | 2.8071 in |
| Outside Diameter | 2.7441 in |
| Flange Diameter | 3.15 in |
| Bore | 1/2 in finished bore |
| Face Width | 0.85 in |
| Overall Length | 1.313 in |
| Construction | Standard Hub |
| Set Screws | 2 x 10-32 |
| Flange Material | Steel |
| Material | Steel (no sintered or powdered metal) |
| Finish | Black Oxide |
| Weight | 1.869 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 28-8MXF12X1/2 runs 8 mm MX high torque belts in 12mm width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 28-8MXF12X1/2 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Powerdrive | 28-8MXF12X1/2 |
Always verify dimensions and bore size before substituting part numbers across manufacturers.
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Multi-unit and OEM quantities qualify for volume discounts. Call or email for a quantity quote.
Frequently Asked Questions
What belts fit the 28-8MXF12X1/2 pulley?
8 mm MX high torque timing belts in 12mm width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 28-8MXF12X1/2 replace the Powerdrive 28-8MXF12X1/2?
Yes. Published interchange data crosses the 28-8MXF12X1/2 directly to the Powerdrive 28-8MXF12X1/2. Verify dimensions and bore before ordering.
Does the 28-8MXF12X1/2 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 28-8MXF12X1/2?
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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