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20T-15W-8B — 3M K-type Drive Pulley, 8mm Plain Bore
20T-15W-8B — 3M K-type Drive Pulley, 8mm Plain Bore
A 20-tooth K-type drive pulley for 15mm wide 3M belts, with an 8mm plain bore. The flanged body guides the belt through a compact drive assembly, making this configuration useful for CNC, automation and general machinery with a matching timing-belt system.
20T-15W-8B quick reference
Approximate drawing dimensions — verify the supplied pulley before machining20T-15W-8B dimensional data sheet
English dimensional reference based on the official C-HTPA20S3M150-K-P8 specification for this 8mm plain-bore K-type pulley. The 17mm dimension is the toothed groove width; nominal belt width is 15mm. Select the image for a full-size view and verify the supplied pulley before final machining.
Why use the 20T-15W-8B pulley?
- 20 teeth provide a defined pulley ratio when paired with the selected mating pulley.
- Designed around a 15mm wide timing belt for a compact belt-drive layout.
- Flanges help guide the belt when the pulleys are correctly aligned.
- The 8mm plain bore suits a matching shaft diameter; confirm shaft fit and the required pulley retention method.
- The Ø22mm flange, Ø22mm hub and 29mm overall height provide useful reference dimensions when planning drive clearances.
Approximate technical dimensions
| Model | Bore Ø | Flange Ø | Hub Ø | Tooth OD | Groove width | Overall height | Bore type |
|---|---|---|---|---|---|---|---|
| 20T-15W-8B | 8mm | 22mm | 22mm | 18.34mm | 17mm | 29mm | Plain |
Reference: Source-confirmed drawing dimensions: Ø22mm flange and hub, Ø18.34mm tooth outside diameter, 17mm groove and 29mm overall height. Adapted supplier reference • Not to scale. Measure the supplied pulley and shaft before machining or setting final clearances. The 17mm groove dimension applies to the pulley; select a nominal 15mm wide belt.
Australia-wide supply
NCMASTER supplies timing-drive components for customers across Victoria, New South Wales, Queensland, South Australia, Western Australia, Tasmania, the Australian Capital Territory and the Northern Territory.
For help matching this 8mm plain-bore pulley to your drive, provide the belt profile, belt width and shaft dimensions.
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