Description
18XL037-6FA3 Timing Pulley, 18 Teeth, XL Pitch, 1/4 in Bore
The 18XL037-6FA3 is a 18-tooth XL (0.200 in trapezoidal) timing pulley with a 1/4 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.
$50 minimum order on drive components. Mix and match any pulleys, bushings, sheaves, sprockets, and accessories in your cart to reach the $50 minimum. Questions? Call (888) 203-2358.
Specifications

Dimension key for this construction type. Values for this part number are in the table below.
| Specification | Value |
|---|---|
| Part Number | 18XL037-6FA3 |
| Teeth | 18 |
| Pitch | XL (0.200 in trapezoidal) |
| For Belt Width | 0.375 in |
| Pitch Diameter | 1.1459 in |
| Outside Diameter | 1.1259 in |
| Flange Diameter | 1.375 in |
| Bore | 1/4 in finished bore |
| Face Width | 0.563 in |
| Overall Length | 0.812 in |
| Hub Diameter | 0.812 in |
| Construction | Standard Hub |
| Set Screws | 2 x 8-32 |
| Flange Material | Aluminum |
| Material | Aluminum (no sintered or powdered metal) |
| Finish | Clear Anodized |
| Weight | 0.0679 lb |
| Country of Origin | India |
Applications
- Instrumentation, office equipment, and precision positioning drives
- 3D printers and desktop CNC equipment
- Robotics, medical devices, and packaging machinery
Belt Compatibility
The 18XL037-6FA3 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 18XL037-6FA3 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Regal Rexnord (Browning®) | 18XLB037 |
| Mitsuboshi | 18XL037-6FA3 |
| Stock Drive Products (SDP/SI) | A 6A 3-18DF03708 |
| Jason Industrial | 18XL037-1/4 |
| Neuman | 18XL037 X 1/4 6F |
| York | 18XL037-1A X 1/4 |
| W.M. Berg | TP20A4W6-18 |
| McMaster-Carr | 1277N47 |
| Grainger | 809V53 |
| Grainger | 6FFR9 |
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 18XL037-6FA3 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 18XL037-6FA3 replace the Regal Rexnord 18XLB037?
Yes. Published interchange data crosses the 18XL037-6FA3 directly to the Regal Rexnord 18XLB037, as well as Mitsuboshi 18XL037-6FA3, Stock Drive Products A 6A 3-18DF03708, Jason Industrial 18XL037-1/4. Verify dimensions and bore before ordering.
Does the 18XL037-6FA3 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 18XL037-6FA3?
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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