QD72XH300 Timing Pulley, 72 Teeth, XH Pitch


Price:
$ 1,380.20

Description

Representative image shown. Actual product appearance varies by size, bore, and configuration. Refer to the specifications table for exact dimensions of this part number.

QD72XH300 Timing Pulley, 72 Teeth, XH Pitch

The QD72XH300 is a 72-tooth XH (0.875 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

Type D3 pulley construction dimension diagram

Dimension key for this construction type. Values for this part number are in the table below.

Specification Value
Part Number QD72XH300
Teeth 72
Pitch XH (0.875 in trapezoidal)
For Belt Width 3 in
Pitch Diameter 20.0535 in
Outside Diameter 19.9435 in
Bore Accepts J bushing (not included)
Face Width 3.625 in
Overall Length 4.906 in
Construction Quick Disconnect Hub
Material Cast Iron (no sintered or powdered metal)
Finish Black Oxide
Weight 76 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 QD72XH300 runs XH (0.875 in trapezoidal) belts in 3 in width. The pitch is standardized, so belt and pulley brands can be mixed.

Cross Reference

The QD72XH300 interchanges with these equivalent part numbers, per published manufacturer interchange data:

Manufacturer Equivalent Part Number
Martin 72XH300 J
TB Woods® 72XH300
Regal Rexnord (Browning®) 72XH300J
Jason Industrial 72XH300J
Ametric 72 XH 300
Powerdrive QD72XH300
Continental (ContiTech) 72XH300-J

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 QD72XH300 pulley?

XH (0.875 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 QD72XH300 replace the Martin 72XH300 J?

Yes. Published interchange data crosses the QD72XH300 directly to the Martin 72XH300 J, as well as TB Woods 72XH300, Regal Rexnord 72XH300J, Jason Industrial 72XH300J. Verify dimensions and bore before ordering.

Does the QD72XH300 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 QD72XH300?

Houston warehouse, same-day shipping on stock items.

Call (888) 203-2358

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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