US No. 1157 Busch Carbide Straight Fissure (Cylinder) Round Bur | Busch No. 21R 010 – HP | Pack of 6

The carbide cylinder round dental bur from Busch & Co. GmbH is a precision-engineered cutting instrument designed to deliver consistent, controlled material removal across a range of professional applications. Manufactured in Germany, this cutter meets exacting quality standards expected in technical and clinical environments.

Product Details

This instrument is classified as a Carbide Cutter, Cylinder Round, conforming to ISO standard 500 104 137 006 010 (US No. 1157). Sold as a convenient pack of 6, it ensures continuity of work without frequent restocking interruptions.

Applications

The carbide cylinder round 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.
	Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances.
	Model Making — Trimming and detailing of plaster and stone models.
	Model Casting Technique — Finishing and adjustment of cast metal frameworks.

Instrument Dimensions

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 Carbide Cylinder Round Dental Bur

As a carbide cylinder round dental bur, this instrument combines a cylindrical geometry with a round end profile, allowing smooth lateral and end-cutting performance. Carbide construction provides superior hardness and wear resistance compared to standard steel burs, extending the effective working life of each instrument.

The carbide cylinder round dental bur is particularly valued in precision trades where geometry consistency and cutting efficiency are critical. Whether used in dental laboratories, prosthetics, or technical model work, it delivers reliable results instrument after instrument.

Made in Germany

Busch & Co. GmbH instruments are manufactured in Germany, reflecting a longstanding tradition of precision toolmaking and quality craftsmanship.

FAQ

What is the ISO classification for this bur? This carbide cylinder round dental bur is classified under ISO 500 104 137 006 010.

How many burs are included per pack? Each pack contains 6 burs.

What materials can this bur cut? It is suitable for use on plastics, model materials, and dental restorations including crown and bridge applications.

Compare With

Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.