US No. 562 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 31 021 – Crosscut – HP | Pack of 6
The carbide cylinder flat dental bur from Busch & Co. GmbH is a precision-engineered cutting instrument designed for exacting material removal across a range of professional applications. This Cylinder Flat carbide cutter (product reference 31 021, US No. 562) is manufactured to ISO classification 500 104 107 007 021, ensuring consistent performance and dimensional accuracy.
Product Details
This carbide cylinder flat dental bur is supplied in a convenient pack of 6, making it well suited for busy practices and technical workshops that demand reliable, repeatable results. Carbide construction provides excellent hardness and wear resistance compared to standard steel burs, supporting clean, controlled cutting with minimal deflection.
Applications
The carbide cylinder flat dental bur 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. |
Instrument Dimensions
| Head Ø | 2.1 mm (ISO size 021) |
|---|---|
| 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.
Quality & Origin
Busch & Co. GmbH instruments are manufactured in Germany, reflecting a longstanding commitment to precision engineering and quality control. Each carbide cylinder flat dental bur undergoes strict production standards to deliver consistent geometry and cutting performance across the full pack.
Standard Classification
ISO: 500 104 107 007 021
This classification enables straightforward cross-referencing with compatible handpiece systems and international ordering standards, supporting accurate procurement for laboratories and clinical environments alike.
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 handpieces are compatible with this instrument? It has an HP (2.35 mm straight) shank, which fits standard laboratory and slow-speed straight 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.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31.104.021 |
| Meisinger | HM31-021-HP |
| SS White | 310069 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 31 021
| Busch figure | 31 |
| US No. | 562 |
| Shape | Straight Fissure (Cylinder) |
| ISO size / head diameter | 021 (2.1 mm max head Ø) |
| Cut type / toothing | Crosscut |
| Shank | HP (2.35 mm) |
| Lab applications (per Busch) | Crown and Bridge Technology, Model Casting Technique, Model Making, Plastics Technology |
| Pack size | Pack of 6 |
| Material | Carbide |
The straight fissure (cylinder) head has parallel sides and a flat end, so it cuts straight-walled slots, flat steps and parallel surfaces. As a medium crosscut cutter it does the main shaping work between bulk reduction and finishing. The 2.1 mm head is a mid-size that handles general contouring of dentures, frameworks and models.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
This is a US No. 562. See all 2 Busch versions — materials, shanks, cuts and packs — on our US No. 562 page.
US No. 562 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No...
