QD21H100 Timing Pulley, 21 Teeth, H Pitch


Price:
$ 63.83

Description

QD21H100 Timing Pulley, 21 Teeth, H Pitch

The QD21H100 is a 21-tooth H (0.500 in trapezoidal) timing pulley. It mounts with an industry-standard bushing, sold separately, machined from ductile iron with a black oxide finish, built for 1 in wide belts. Machined from solid stock, never sintered or powdered metal.

Specifications

Type E1F pulley construction dimension diagram

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

Specification Value
Part Number QD21H100
Teeth 21
Pitch H (0.500 in trapezoidal)
For Belt Width 1 in
Pitch Diameter 3.3423 in
Outside Diameter 3.2883 in
Flange Diameter 3.574 in
Bore Accepts SH bushing (not included)
Face Width 1.312 in
Overall Length 1.312 in
Construction Quick Disconnect Hub
Flange Material Steel
Material Ductile Iron (no sintered or powdered metal)
Finish Black Oxide
Weight 1.459 lb
Country of Origin United States. ISO 9001:2015 certified manufacturing.

Applications

  • Instrumentation, office equipment, and precision positioning drives
  • 3D printers and desktop CNC equipment
  • Robotics, medical devices, and packaging machinery

Belt Compatibility

The QD21H100 runs H (0.500 in trapezoidal) belts in 1 in width. The pitch is standardized, so belt and pulley brands can be mixed.

Cross Reference

The QD21H100 interchanges with these equivalent part numbers, per published manufacturer interchange data:

Manufacturer Equivalent Part Number
Martin 21H100 SH
TB Woods® 21H100
Regal Rexnord (Browning®) 21H100SH
Mitsuboshi QD21H100
Jason Industrial 21H100SH
Ametric 21H100.SH
Powerdrive QD21H100
Continental (ContiTech) 21H100-SH

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 QD21H100 pulley?

H (0.500 in trapezoidal) timing belts in 1 in width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.

Does the QD21H100 replace the Martin 21H100 SH?

Yes. Published interchange data crosses the QD21H100 directly to the Martin 21H100 SH, as well as TB Woods 21H100, Regal Rexnord 21H100SH, Mitsuboshi QD21H100. Verify dimensions and bore before ordering.

Does the QD21H100 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 QD21H100?

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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