Description
Round-shaped aluminum-oxide mounted grinding points for precision sharpening, deburring, and general-purpose grinding with Proxxon Micromot rotary tools. The round profile excels at grinding curved surfaces, concave contours, and internal radii where flat or straight bits can't conform to the workpiece geometry. Made from high-quality base materials of consistent hardness.
Specifications:
- Shape: round (ball)
- Abrasive: aluminum oxide
- Shank diameter: 2.35mm (3/32") or 3.0mm (7/64") — accurately dimensioned for highest concentricity
- Quantity: 5 pieces per pack
Ideal for:
- Grinding curved surfaces and concave contours
- Internal radius work and cavity grinding
- Sharpening and deburring
- Cast iron and unhardened steels
- Non-ferrous metals and hard metal alloys
- Welded joints, rivets, and rust removal
Proxxon No. 28772
Works Well With:
- Professional Rotary Tool IBS/E — primary compatible Micromot rotary tool
- Proxxon AC Adapter NG 5/E with Electronic Speed Control (No. 38704) — variable speed bench power for controlled grinding
- Proxxon AC Adapter NG 2/S (No. 38706) — basic bench power supply for Micromot tools
- Aluminum-Oxide Mounted Points — Cylinder Shape, 5-Pack (No. 28774) — cylinder-shaped companion for straight surface grinding
- Aluminum-Oxide Mounted Points — Inverted Cone Shape, 5-Pack (No. 28778) — for recesses and angled surfaces
- Aluminum-Oxide Mounted Points Wheel, 5-Pack — wheel-shaped companion for flat surface grinding
- Aluminum-Oxide Grinding Wheels 7/8", 10-Pack (No. 28302) — disc wheels for broader grinding applications
Returns can only be accepted for unused product in its original packaging. In addition to the returned item/items, a copy of the original packing slip or invoice is required. If proper paperwork is missing, PROXXON Inc. will not issue a credit. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here.
California Residents Prop 65 Information
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.