Description
50XL037-6WA5 Timing Pulley, 5 Teeth, XL Pitch, 3/8 in Bore
The 50XL037-6WA5 is a 5-tooth XL (0.200 in trapezoidal) timing pulley with a 3/8 in finished bore, machined from aluminum with a clear anodized finish, built for 0.375 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 | 50XL037-6WA5 |
| Teeth | 5 |
| Pitch | XL (0.200 in trapezoidal) |
| For Belt Width | 0.375 in |
| Pitch Diameter | 3.1831 in |
| Outside Diameter | 3.1631 in |
| Bore | 3/8 in finished bore |
| Face Width | 0.563 in |
| Overall Length | 1 in |
| Hub Diameter | 1.5 in |
| Construction | Lightened Pulley with Standard Hub |
| Set Screws | 2 x 10-32 |
| Flange Material | Aluminum |
| Material | Aluminum (no sintered or powdered metal) |
| Finish | Clear Anodized |
| Weight | 0.38 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 50XL037-6WA5 runs XL (0.200 in trapezoidal) belts in 0.375 in width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 50XL037-6WA5 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Mitsuboshi | 50XL037-6WA5 |
| Stock Drive Products (SDP/SI) | A 6A 3-50NF03716 |
| Neuman | 50XL037 X 1/2 6W |
| York | 50XL037-3A X 3/8 |
| McMaster-Carr | 1277N31 |
| Powerdrive | 50XL037-6WA5 |
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 50XL037-6WA5 pulley?
XL (0.200 in trapezoidal) timing belts in 0.375 in width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 50XL037-6WA5 replace the Mitsuboshi 50XL037-6WA5?
Yes. Published interchange data crosses the 50XL037-6WA5 directly to the Mitsuboshi 50XL037-6WA5, as well as Stock Drive Products A 6A 3-50NF03716, Neuman 50XL037 X 1/2 6W, York 50XL037-3A X 3/8. Verify dimensions and bore before ordering.
Does the 50XL037-6WA5 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 50XL037-6WA5?
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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