Busch Carbide Round Cutter | Busch No. 421X 027 – Crosscut – HP | Pack of 1
The carbide cutter round medium double cut from Busch & Co. GmbH is a precision-engineered rotary tool designed for demanding material removal applications across multiple professional disciplines. Classified under ISO standard 500 104 001 190 027, this instrument delivers consistent, reliable performance in every application.
Product Overview
This carbide cutter round medium double cut features a round head geometry combined with a medium double-cut tooth pattern, enabling efficient stock removal while maintaining a controlled, smooth finish. The carbide construction ensures long-lasting sharpness and resistance to wear, making it a dependable choice for professionals who require accuracy and durability in their work.
Applications
The carbide cutter round medium double cut is well-suited for the following dental laboratory applications:
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Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. |
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Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. |
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Model Making — Trimming and detailing of plaster and stone models. |
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Model Casting Technique — Finishing and adjustment of cast metal frameworks. |
Key Features
- Round head profile for versatile contouring
- Medium double-cut pattern for balanced cutting aggressiveness and surface quality
- Carbide construction for exceptional durability and edge retention
- ISO Classification: 500 104 001 190 027
- Manufactured in Germany to stringent quality standards
- Supplied as a Pack of 1
The carbide cutter round medium double cut reflects Busch & Co. GmbH's long-standing commitment to German-engineered precision. Whether you are working in dental technology, plastics, or model crafting, this tool offers the reliability and cutting performance that professionals expect.
Instrument Dimensions
| Head Ø | 2.7 mm (ISO size 027) |
|---|---|
| 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 is the ISO classification for this cutter? This cutter is classified under ISO 500 104 001 190 027.
What cut type does this carbide cutter use? It uses a medium double-cut pattern, which balances material removal speed with surface finish quality.
Where is this product manufactured? This carbide cutter round medium double cut is made in Germany by Busch & Co. GmbH.
Specifications: Busch No. 421X 027
| Busch figure | 421X |
| Shape | Round |
| ISO size / head diameter | 027 (2.7 mm max head Ø) |
| Cut type / toothing | Crosscut |
| Shank | HP |
| Lab applications (per Busch) | Crown and Bridge Technology, Model Casting Technique, Model Making, Plastics Technology |
| Pack size | Pack of 1 |
| Material | Carbide |
The round head cuts in every direction, which makes it the shape for opening, hollowing and relieving acrylic, plaster and model surfaces rather than for flat work. As a medium crosscut cutter it does the main shaping work between bulk reduction and finishing. The 2.7 mm head is a large size for fast reduction of denture bases and broad framework surfaces.
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.
Busch Carbide Round Cutter | Busch No. 421X 027 – Crosscut – HP | P...
