21-5P25-6FS3 Powerhouse® Timing Pulley, 21 Teeth, 5P Pitch


Price:
$ 58.37

Description

21-5P25-6FS3 Powerhouse® Timing Pulley, 21 Teeth, 5P Pitch

The 21-5P25-6FS3 is a 21-tooth 5 mm Powerhouse® curvilinear timing pulley with a 1/4 in minimum plain bore, machined from steel with a black oxide finish, built for 25mm 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.

Specifications

Type 6FNOKEY pulley construction dimension diagram

Dimension key for this construction type. Values for this part number are in the table below.

Specification Value
Part Number 21-5P25-6FS3
Teeth 21
Pitch 5 mm Powerhouse® curvilinear
For Belt Width 25mm
Pitch Diameter 1.3158 in
Outside Diameter 1.2708 in
Flange Diameter 1.531 in
Bore 1/4 in minimum plain bore
Face Width 1.28 in
Overall Length 1.65 in
Hub Diameter 0.9 in
Construction Standard Hub
Flange Material Steel
Material Steel (no sintered or powdered metal)
Finish Black Oxide
Weight 0.496 lb
Country of Origin United States. ISO 9001:2015 certified manufacturing.

Applications

  • Higher load synchronous drives in compact spaces
  • Industrial automation and conveyor drives
  • Packaging and material handling equipment

Belt Compatibility

The 21-5P25-6FS3 runs 5 mm Powerhouse® curvilinear belts in 25mm width. The pitch is standardized, so belt and pulley brands can be mixed.

Cross Reference

The 21-5P25-6FS3 interchanges with these equivalent part numbers, per published manufacturer interchange data:

Manufacturer Equivalent Part Number
Gates® P21-5MGT-25-MPB
Neuman 5MR-21S-25
Grainger 809TC4
Powerdrive 21-5P25-6FS3
Continental (ContiTech) P21-5M-25-MPB QTE

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 21-5P25-6FS3 pulley?

5 mm Powerhouse® curvilinear timing belts in 25mm width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.

Does the 21-5P25-6FS3 replace the Gates P21-5MGT-25-MPB?

Yes. Published interchange data crosses the 21-5P25-6FS3 directly to the Gates P21-5MGT-25-MPB, as well as Neuman 5MR-21S-25, Grainger 809TC4, Powerdrive 21-5P25-6FS3. Verify dimensions and bore before ordering.

Does the 21-5P25-6FS3 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 21-5P25-6FS3?

Houston warehouse, same-day shipping on stock items.

Call (888) 203-2358

Powerhouse® 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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