Description
21-2P09-6FA2 Powerhouse® Timing Pulley, 21 Teeth, 2P Pitch, 3/16 in Bore
The 21-2P09-6FA2 is a 21-tooth 2 mm Powerhouse® curvilinear timing pulley with a 3/16 in finished bore, machined from aluminum with a clear anodized finish, built for 9mm wide belts. Machined from solid stock, never sintered or powdered metal. The Powerhouse® modified curvilinear profile carries roughly twice the load of a standard curvilinear pulley of the same size.
$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 | 21-2P09-6FA2 |
| Teeth | 21 |
| Pitch | 2 mm Powerhouse® curvilinear |
| For Belt Width | 9mm |
| Pitch Diameter | 0.5263 in |
| Outside Diameter | 0.506 in |
| Flange Diameter | 0.71 in |
| Bore | 3/16 in finished bore |
| Face Width | 0.514 in |
| Overall Length | 0.75 in |
| Hub Diameter | 0.39 in |
| Construction | Standard Hub |
| Set Screws | 2 x 4-40 |
| Flange Material | Aluminum |
| Material | Aluminum (no sintered or powdered metal) |
| Finish | Clear Anodized |
| Weight | 0.0123 lb |
| Country of Origin | India |
Applications
- Higher load synchronous drives in compact spaces
- Industrial automation and conveyor drives
- Packaging and material handling equipment
Belt Compatibility
The 21-2P09-6FA2 runs 2 mm Powerhouse® curvilinear belts in 9mm width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 21-2P09-6FA2 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Gates® | 2MR-21S-09 |
| Stock Drive Products (SDP/SI) | A 6A51-021DF0906 |
| Neuman | 2MR-21S-09 |
| York | 21-2GT06-1A X 3/16 |
| W.M. Berg | TP2A3W9-21 |
| Powerdrive | 21-2P09-6FA2 |
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 21-2P09-6FA2 pulley?
2 mm Powerhouse® curvilinear timing belts in 9mm width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 21-2P09-6FA2 replace the Gates 2MR-21S-09?
Yes. Published interchange data crosses the 21-2P09-6FA2 directly to the Gates 2MR-21S-09, as well as Stock Drive Products A 6A51-021DF0906, Neuman 2MR-21S-09, York 21-2GT06-1A X 3/16. Verify dimensions and bore before ordering.
Does the 21-2P09-6FA2 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 21-2P09-6FA2?
Houston warehouse, same-day shipping on stock items.
Call (888) 203-2358Powerhouse® is a registered trademark of its owner. HTD® is a registered trademark of Gates Corporation. 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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