Description
A sphere-shaped diamond bur for concave surface grinding, shaping, and finishing with Proxxon Micromot rotary tools. High-quality, long-wearing diamond burs with an even diamond coating over a stainless steel core. At 5/64" diameter, this is the larger of the two sphere sizes — ideal for grinding broader concave surfaces, internal radii, and bowl-shaped recesses. Supplied in a 2-pack.
Specifications:
- Shape: sphere (ball)
- Diameter: 5/64" (approx. 2mm)
- Shank diameter: 2.35mm (3/32")
- Coating: even diamond over stainless steel core
- Quantity: 2 burs per pack
Suitable materials:
- Glass and ceramics
- Porcelain
- Stones and semi-precious stones
- Non-ferrous metals
- Steel (including chrome-cobalt alloy)
Proxxon No. 28222
Other diamond bur shapes:
- Diamond Bur — Sphere 1/32", 2-Pack (No. 28212) — smaller sphere for fine detail work and tight concave areas
- Diamond Bur — Cylinder 5/64" × 13/64" (No. 28240) — cylinder shape for straight surface grinding
- Diamond Bur — Lenticular Wheel 13/64" (No. 28250) — disc shape for engraving lines and edge grinding
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 diamond grinding
- Proxxon AC Adapter NG 2/S (No. 38706) — basic bench power supply for Micromot tools
- Diamond Cut-Off Wheel 3/4" — diamond cutting disc for the same hard materials
- Diamond Cut-Off Wheel 1-1/2" — larger diamond cutting disc
- Complete Glass Engraving Set — GG 12 (No. 38635) — dedicated glass engraving tool and bit set
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.