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.
QD48XXH400 Timing Pulley, 48 Teeth, XXH Pitch
The QD48XXH400 is a 48-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 4 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 | QD48XXH400 |
| Teeth | 48 |
| Pitch | XXH (1.250 in trapezoidal) |
| For Belt Width | 4 in |
| Pitch Diameter | 19.0986 in |
| Outside Diameter | 18.9786 in |
| Bore | Accepts J bushing (not included) |
| Face Width | 2.625 in |
| Overall Length | 4.75 in |
| Construction | Quick Disconnect Hub |
| Material | Cast Iron (no sintered or powdered metal) |
| Finish | Black Oxide |
| Weight | 12 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 QD48XXH400 runs XXH (1.250 in trapezoidal) belts in 4 in width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The QD48XXH400 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Martin | 48XXH400 J |
| TB Woods® | 48XXH400 |
| Regal Rexnord (Browning®) | 48XXH400J |
| Jason Industrial | 48XXH400J |
| Ametric | 48 XXH 400 |
| Powerdrive | QD48XXH400 |
| Continental (ContiTech) | 48XXH400-J |
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 QD48XXH400 pulley?
XXH (1.250 in trapezoidal) timing belts in 4 in width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the QD48XXH400 replace the Martin 48XXH400 J?
Yes. Published interchange data crosses the QD48XXH400 directly to the Martin 48XXH400 J, as well as TB Woods 48XXH400, Regal Rexnord 48XXH400J, Jason Industrial 48XXH400J. Verify dimensions and bore before ordering.
Does the QD48XXH400 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 QD48XXH400?
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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