Description
Representative image shown. Actual product appearance varies by size, bore, and configuration. Refer to the specifications table for exact dimensions of this part number.
21AT5/48-0 Timing Pulley, 48 Teeth, AT5 Pitch
The 21AT5/48-0 is a 48-tooth AT5 (5 mm metric) timing pulley with a 8 mm minimum plain bore, machined from aluminum, built for 1mm 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 | 21AT5/48-0 |
| Teeth | 48 |
| Pitch | AT5 (5 mm metric) |
| For Belt Width | 1mm |
| Pitch Diameter | 3.0077 in |
| Outside Diameter | 2.9565 in |
| Bore | 8 mm minimum plain bore |
| Construction | Standard Hub |
| Material | Aluminum (no sintered or powdered metal) |
| Weight | 0.472 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 21AT5/48-0 runs AT5 (5 mm metric) belts in 1mm width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 21AT5/48-0 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Mitsuboshi | 21AT5/48-0 |
| Jason Industrial | 21AT5/48-0 |
| Optibelt | 21AT5/48-0 |
| Ametric | 21AT5/48 0 |
| Powerdrive | 21AT5/48-0 |
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 21AT5/48-0 pulley?
AT5 (5 mm metric) timing belts in 1mm width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 21AT5/48-0 replace the Mitsuboshi 21AT5/48-0?
Yes. Published interchange data crosses the 21AT5/48-0 directly to the Mitsuboshi 21AT5/48-0, as well as Jason Industrial 21AT5/48-0, Optibelt 21AT5/48-0, Ametric 21AT5/48 0. Verify dimensions and bore before ordering.
Does the 21AT5/48-0 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 21AT5/48-0?
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.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.