Busch Zirconia Diamond Wheel Polisher | Busch No. 9921 140 – Fine – RA | Pack of 2
The zirconia polishing diamond bur fine from Busch & Co. GmbH — product reference Busch Zirconia Diamond Polisher | Busch No. 9921 140 – Fine – RA — is an expertly engineered polisher designed to deliver a high-shine finish on zirconia restorations with precision and consistency. Supplied as a pack of two, this instrument is built to meet the demanding standards of modern dental laboratory work.
Product Overview
This polisher is classified under ISO standard 803 204 543 514 140 and features a diamond-interspersed composition in a fine grit configuration. The diamond-interspersed abrasive matrix ensures controlled material removal while progressively refining the zirconia surface to a high-gloss result, making this zirconia polishing diamond bur fine an essential tool for achieving clinically superior surface quality.
Key Applications
- Crown and Bridge Technology: Optimised for shaping and finishing zirconia crowns and bridge frameworks to precise occlusal and marginal requirements.
- Processing of Zirconium Oxide: Engineered specifically for zirconium oxide materials, providing efficient stock removal and surface refinement without compromising structural integrity.
- Diamond Interspersed Abrasion: The uniform diamond particle distribution delivers consistent cutting performance and predictable polishing results across the zirconia surface.
Why Choose This Polisher
As a zirconia polishing diamond bur fine manufactured in Germany, this instrument reflects Busch & Co. GmbH's longstanding commitment to quality and precision engineering. German-made dental instruments are recognised for their dimensional accuracy, material consistency, and durability under clinical and laboratory conditions.
Each pack contains two polishers, offering practical value for high-throughput laboratory environments. The fine designation indicates a finishing-stage abrasive, ideal as a final polishing step to achieve the high-shine result expected in premium zirconia prosthetics.
Technical Classification
| Parameter | Detail |
|---|---|
| ISO Classification | 803 204 543 514 140 |
| Application | Zirconia High-Shine Polishing |
| Abrasive Type | Diamond Interspersed |
| Grit | Fine |
| Pack Quantity | 2 pieces |
| Origin | Made in Germany |
For laboratories requiring a reliable zirconia polishing diamond bur fine that consistently delivers professional results, the Busch 9921 140 RA is a well-established choice within the dental industry.
Instrument Dimensions
| Head Ø | 14.0 mm (ISO size 140) |
|---|---|
| Shank | RA / CA (Contra-Angle, latch) — 2.35 mm Ø, 22 mm overall length (ISO 204) |
Per ISO 6360, the size number is the maximum head diameter in tenths of a millimeter. See our Busch Bur Size Chart for the full size conversion table, shank codes, and color ring guide.
Busch Warranty & 60-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused, unopened product in its original packaging can also be returned or exchanged within 60 days of delivery. Full terms are on our Warranty page and Returns page.
FAQ
What handpieces are compatible with this instrument?
It has an RA (right angle, latch-type) shank, which fits standard slow-speed contra-angle handpieces.
How many are included per pack?
Each pack contains 2 polishers.
Where is this instrument made?
It is manufactured by Busch & Co. in Engelskirchen, Germany, an ISO 13485-certified specialist in rotary precision instruments since 1905.
