Description
QD20XXH300 Timing Pulley, 2 Teeth, XXH Pitch
The QD20XXH300 is a 2-tooth XXH (1.250 in trapezoidal) timing pulley. It mounts with an industry-standard bushing, sold separately, machined from cast iron with a black oxide finish, built for 3 in wide belts. Machined from solid stock, never sintered or powdered metal.
Specifications

Dimension key for this construction type. Values for this part number are in the table below.
| Specification | Value |
|---|---|
| Part Number | QD20XXH300 |
| Teeth | 2 |
| Pitch | XXH (1.250 in trapezoidal) |
| For Belt Width | 3 in |
| Pitch Diameter | 7.9577 in |
| Outside Diameter | 7.8377 in |
| Flange Diameter | 8.504 in |
| Bore | Accepts SF bushing (not included) |
| Face Width | 3.625 in |
| Overall Length | 3.625 in |
| Construction | Quick Disconnect Hub |
| Flange Material | Steel |
| Material | Cast Iron (no sintered or powdered metal) |
| Finish | Black Oxide |
| Weight | 22 lb |
| Country of Origin | China |
Applications
- Instrumentation, office equipment, and precision positioning drives
- 3D printers and desktop CNC equipment
- Robotics, medical devices, and packaging machinery
Belt Compatibility
The QD20XXH300 runs XXH (1.250 in trapezoidal) belts in 3 in width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The QD20XXH300 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Martin | 20XXH300 SF |
| TB Woods® | 20XXH300 |
| Regal Rexnord (Browning®) | 20XXH300SF |
| Jason Industrial | 20XXH300SF |
| Ametric | 20 XXH 300 |
| Powerdrive | QD20XXH300 |
| Continental (ContiTech) | 20XXH300-SF |
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 QD20XXH300 pulley?
XXH (1.250 in trapezoidal) timing belts in 3 in width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the QD20XXH300 replace the Martin 20XXH300 SF?
Yes. Published interchange data crosses the QD20XXH300 directly to the Martin 20XXH300 SF, as well as TB Woods 20XXH300, Regal Rexnord 20XXH300SF, Jason Industrial 20XXH300SF. Verify dimensions and bore before ordering.
Does the QD20XXH300 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 QD20XXH300?
Houston warehouse, same-day shipping on stock items.
Call (888) 203-2358All 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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