Busch Carbide Round Cutter | Busch No. 421 040 – HP | Pack of 1
The round carbide cutter medium cut from Busch & Co. GmbH is a precision-engineered rotary tool designed for controlled, efficient material removal across a range of technical applications. Built to exacting German manufacturing standards, this cutter delivers consistent performance and reliable results in professional settings.
Product Overview
This round carbide cutter medium cut features a robust carbide construction with a round head geometry, making it well suited for shaping, contouring, and refining workpieces with accuracy. The medium cut profile strikes a balance between material removal rate and surface finish quality, offering versatility for demanding tasks.
- Type: Carbide Cutter, Round
- Cut: Medium Cut
- Standard Classification: ISO: 500 104 001 175 040
- Pack Quantity: 1
Applications
The round carbide cutter medium cut is well-suited for the following dental laboratory applications:
| Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. | |
| Model Making — Trimming and detailing of plaster and stone models. |
Instrument Dimensions
| Head Ø | 4.0 mm (ISO size 040) |
|---|---|
| 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.
Why Choose This Cutter?
Manufactured in Germany, this tool reflects Busch & Co. GmbH's commitment to quality and precision. The carbide construction ensures durability and longevity, maintaining cutting efficiency over extended use. The round head profile allows access to curved surfaces and recesses, making the round carbide cutter medium cut a versatile addition to any technical workshop.

FAQ
What materials is this cutter suitable for? This round carbide cutter is designed for use in model making and plastics technology applications, where precise shaping and controlled material removal are required.
What does medium cut mean? Medium cut refers to the tooth geometry of the cutter, which offers a balance between aggressive material removal and a refined surface finish, making it suitable for a broad range of tasks.
What is the ISO classification? The standard classification for this cutter is ISO: 500 104 001 175 040.

