BMG Style Needle Bearings
$8.99
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Replacement BMG-style needle roller bearings for 3 mm extruder drive-gear shafts. This is a 10-pack of small needle bearings for Bondtech-style / BMG-style drive gears used in dual-drive 3D-printer extruders.
Why use these instead of a random miniature bearing?
- Made for the drive gear bore: Bondtech's own spare-part spec calls for needle bearings on a 3.0 mm shaft, with two bearings per drive gear.
- Correct service quantity: a 10-pack gives you enough bearings for up to five drive gears.
- Extruder-focused spare: useful when rebuilding BMG-style internals instead of replacing a whole gear set.
Specifications
- Type: needle roller bearing / needle bearing
- Common size: 3 × 5 × 7 mm class
- Approximate measured size from matching BMG spare listings: 3.1 mm ID × 4.9 mm OD × 6.7 mm length
- Shaft fit: 3.0 mm drive-gear shaft
- Quantity: 10 bearings
Intended use
Use these as replacement bearings for BMG-style extruder drive gears, including clone gear sets and repair builds. They pair with the BMG Clone Extruder Gears, BMG Clone Components Kit, and BMG-style extruder hardware such as the Extruder Thumb Screw.
Gotchas
- These are not full extruder gears and do not include shafts, gears, screws, or printed parts.
- This listing is for BMG-style replacement bearings, not an official Bondtech-branded package.
- Check your drive gear and shaft dimensions before ordering; BMG-style clones can vary.
