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Shaft fit
The 8 mm bore must match the actual motor or driven shaft, including tolerance and keying requirements.
$27.51
MECHANICAL DIY PART1 PIECE
A CNC-machined aluminum driver pulley with a 40 mm outside diameter, 8 mm bore and dual M4 hub holes.
- 40 mm overall diameter
- 8 mm shaft bore
- 12 mm listed groove area
- Two M4 threaded hub holes
Confirm the groove profile, shaft fit, belt or cord geometry and supplied fastening hardware before ordering.
MECHANICAL DIY PART
A compact aluminum pulley for a custom drive system
Use this driver pulley in a compatible mechanical power-transmission or automation build after checking every shaft, groove and alignment dimension against the project.
40 mmoutside diameter
8 mmshaft bore
23 mmlisted overall height
2 × M4threaded hub holes
KEY DETAILS
What this item is designed to do
Hub retention
Two M4 threaded holes are provided for grub or set screws; confirm whether the required screws are included.
Custom drive layout
Align the pulley and mating path carefully to avoid side load, rubbing or an unstable belt/cord track.
What is included
- 1 aluminum U-groove / concave driver pulley
Check before ordering
- Confirm 8 mm shaft diameter and tolerance
- Verify the groove profile against the intended belt, cord or wheel path
- Check whether M4 set screws are supplied
- Resolve the listing’s conflicting width dimensions before a precision build
SPECIFICATIONS
Product details at a glance
MaterialAluminum
Outside diameter40 mm
Shaft bore8 mm
Listed overall height23 mm
Listed groove area12 mm
Hub holes2 × M4 threaded
Quantity1 piece
Dimension note
Older listing copy contains inconsistent width measurements and an unsupported GT2-belt reference. Use the product drawing and contact PlantMate for any dimension that is critical to fit or alignment.
SHOP & SUPPORT
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Browse mechanical DIY parts or ask PlantMate to confirm a dimension before placing an order.
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