Busch Carbide Conical Cutter | Busch No. 432FXK 023 – HP | Pack of 1
Carbide Cutter Taper (Cone) Round Fine Double Cut Ceramic Dental Bur
The carbide cutter taper (cone) round fine double cut ceramic dental bur is a precision-engineered rotary instrument designed for demanding dental applications, particularly in the shaping and finishing of ceramic restorations. Manufactured by Busch & Co. GmbH in Germany, this instrument reflects the exacting standards that define German dental engineering.
Product Overview
The 432FXK 023 HP features a conical round form with a fine double cut flute pattern, making it highly effective for controlled material removal on ceramic substrates. The double cut geometry produces a smoother surface finish compared to single-cut versions, reducing the need for additional finishing steps. This instrument is supplied as a single unit (Pack of 1).
Applications
The carbide cutter taper (cone) round fine double cut ceramic dental bur is well-suited for the following dental laboratory applications:
| Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. |
Made in Germany
Busch & Co. GmbH has a longstanding reputation for producing dental instruments, tools, burs, diamonds, and polishers to the highest German quality standards. Each carbide cutter taper (cone) round fine double cut ceramic dental bur undergoes rigorous manufacturing controls to ensure consistent performance across clinical applications.
Key Features
- Taper (Cone) round form factor for precise contouring
- Fine double cut for smooth, controlled ceramic removal
- Compatible with HP (handpiece) shank systems
- Optimised for ceramic dental restorations
- Manufactured in Germany by Busch & Co. GmbH
Instrument Dimensions
| Head Ø | 2.3 mm (ISO size 023) |
|---|---|
| Shank | HP (Straight Handpiece) — 2.35 mm Ø, 44.5 mm overall length (ISO 104) |
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 & 90-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused product in original packaging can also be returned or exchanged within 90 days of your invoice date. Full terms are on our Warranty page.

FAQ
What material is this bur designed to cut? This instrument is specifically formulated for use on ceramic, making it ideal for crown and bridge laboratory or chairside applications.
What does fine double cut mean? A fine double cut refers to a crosshatched flute pattern that enables more refined material removal and a smoother finish compared to a standard single cut bur.
Is this the carbide cutter taper (cone) round fine double cut ceramic dental bur suitable for HP handpieces? Yes, the 432FXK 023 is designed with an HP shank for use with standard straight handpiece systems.
Specifications: Busch No. 432FXK 023
| Busch figure | 432FXK |
| Shape | Conical |
| ISO size / head diameter | 023 (2.3 mm max head Ø) |
| Cut type / toothing | Fine Crosscut |
| Shank | HP |
| Lab applications (per Busch) | Crown and Bridge Technology |
| Pack size | Pack of 1 |
| Material | Carbide |
The conical head tapers toward a rounded tip, for contouring convergent surfaces and reaching into narrow areas. Fine crosscut teeth trade removal speed for surface quality: use it after shaping, as the last cutting step before polishers. The K designation marks it for ceramics work. At 2.3 mm the head is a general-purpose size.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
Part of our Double Cut Burs: Busch Crosscut Carbide Cutter Collection — browse all 142 shapes, cuts and sizes.
