Description
12XL025-6FA2 Timing Pulley, 12 Teeth, XL Pitch, 3/16 in Bore
The 12XL025-6FA2 is a 12-tooth XL (0.200 in trapezoidal) timing pulley with a 3/16 in finished bore, machined from aluminum with a clear anodized finish, built for 0.25 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 | 12XL025-6FA2 |
| Teeth | 12 |
| Pitch | XL (0.200 in trapezoidal) |
| For Belt Width | 0.25 in |
| Pitch Diameter | 0.7639 in |
| Outside Diameter | 0.7439 in |
| Flange Diameter | 1 in |
| Bore | 3/16 in finished bore |
| Face Width | 0.438 in |
| Overall Length | 0.688 in |
| Hub Diameter | 0.5 in |
| Construction | Standard Hub |
| Set Screws | 2 x 6-40 |
| Flange Material | Aluminum |
| Material | Aluminum (no sintered or powdered metal) |
| Finish | Clear Anodized |
| Weight | 0.0239 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 12XL025-6FA2 runs XL (0.200 in trapezoidal) belts in 0.25 in width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 12XL025-6FA2 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Gates® | PB12XL025 |
| Mitsuboshi | 12XL025-6FA2 |
| Stock Drive Products (SDP/SI) | A 6A 3-12DF02506 |
| Neuman | 12XL025 X 3/16 6F |
| York | 12XL025-1A X 3/16 |
| On Drives | 6495K713 |
| W.M. Berg | TP20A3W4-12 |
| McMaster-Carr | 1277N13 |
| Powerdrive | 12XL025-6FA2 |
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 12XL025-6FA2 pulley?
XL (0.200 in trapezoidal) timing belts in 0.25 in width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 12XL025-6FA2 replace the Gates PB12XL025?
Yes. Published interchange data crosses the 12XL025-6FA2 directly to the Gates PB12XL025, as well as Mitsuboshi 12XL025-6FA2, Stock Drive Products A 6A 3-12DF02506, Neuman 12XL025 X 3/16 6F. Verify dimensions and bore before ordering.
Does the 12XL025-6FA2 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 12XL025-6FA2?
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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