US No. 8SXM Busch Carbide Round Bur | Busch No. 1SXM 023 – SXM-Cut – RA | Pack of 6
Busch No. 1SXM 023 – RA (US No. 8SXM) is the standard-length latch-shank SXM-Cut carbide round bur, supplied as an economical pack of 6. Its 2.3 mm (ISO 023) rosehead head runs in slow-speed contra-angle handpieces via the right-angle (RA) latch shank; a two-pack RA-L long-shank version is available for deeper access. Manufactured in Germany by Busch & Co. GmbH.
This is a US No. 8. See all 12 Busch versions — materials, shanks, cuts and packs — on our US No. 8 page.
Why choose the RA version
A 2.3 mm SXM-Cut rosehead on a standard RA shank is typically the go-to bur for everyday caries excavation and cavity preparation in a low-speed latch contra-angle: the power-cut flute design removes softened dentine quickly with less chatter, and the standard shank length keeps the head compact and controllable for the majority of accessible cavities. The six-pack suits practices that use this size routinely; reach for the RA-L when extra length is required.
Also available: No. 1SXM 023 – RA-L (pack of 2).
Key Features
- Material: Carbide construction for consistent cutting performance
- Shape: Round (Rosehead) — ideal for controlled cavity preparation
- Cut Type: SXM-Cut — fast cutting with reduced vibration
- Neck Design: Slender neck with gold-plated finish and green ring identification
- Shank: RA (Right Angle) — compatible with standard slow-speed contra-angle handpieces
- Pack Quantity: 6 burs per pack
- ISO Classification: 500 204 001 019 023
Clinical Application
Instrument Dimensions
| Head Ø | 2.3 mm (ISO size 023) |
|---|---|
| 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 6 burs.
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.
