Description
66T10/40-2 Timing Pulley, 4 Teeth, T10 Pitch
The 66T10/40-2 is a 4-tooth T10 (10 mm metric) timing pulley with a 16 mm minimum plain bore, machined from aluminum, built for 5mm wide belts. Machined from solid stock, never sintered or powdered metal.
Specifications

Dimension key for this construction type. Values for this part number are in the table below.
| Specification | Value |
|---|---|
| Part Number | 66T10/40-2 |
| Teeth | 4 |
| Pitch | T10 (10 mm metric) |
| For Belt Width | 5mm |
| Pitch Diameter | 5.0128 in |
| Outside Diameter | 4.9364 in |
| Bore | 16 mm minimum plain bore |
| Construction | Standard Hub |
| Flange Material | Steel |
| Material | Aluminum (no sintered or powdered metal) |
| Weight | 4.45 lb |
| Country of Origin | China |
Applications
- Instrumentation, office equipment, and precision positioning drives
- 3D printers and desktop CNC equipment
- Robotics, medical devices, and packaging machinery
Belt Compatibility
The 66T10/40-2 runs T10 (10 mm metric) belts in 5mm width. The pitch is standardized, so belt and pulley brands can be mixed.
Cross Reference
The 66T10/40-2 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Mitsuboshi | 66T10/40-2 |
| Jason Industrial | 66T10/40-2 |
| Optibelt | 66T10/40-2 |
| Ametric | 66T10/40-2 |
| Powerdrive | 66T10/40-2 |
Always verify dimensions and bore size before substituting part numbers across manufacturers.
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Multi-unit and OEM quantities qualify for volume discounts. Call or email for a quantity quote.
Frequently Asked Questions
What belts fit the 66T10/40-2 pulley?
T10 (10 mm metric) timing belts in 5mm width from any manufacturer. The pitch is standardized, so belt and pulley brands can be mixed.
Does the 66T10/40-2 replace the Mitsuboshi 66T10/40-2?
Yes. Published interchange data crosses the 66T10/40-2 directly to the Mitsuboshi 66T10/40-2, as well as Jason Industrial 66T10/40-2, Optibelt 66T10/40-2, Ametric 66T10/40-2. Verify dimensions and bore before ordering.
Does the 66T10/40-2 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 66T10/40-2?
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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