US No. 557 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 31 010 – Crosscut – HP | Pack of 6
The carbide cylinder flat cutter dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding cutting and shaping tasks across multiple professional disciplines. This high-performance carbide cutter features a cylinder flat geometry that delivers consistent, controlled material removal with every pass.
Product Overview
Classified under ISO standard 500 104 107 007 010, this carbide cylinder flat cutter dental bur is manufactured in Germany to rigorous quality standards. The cylinder flat profile makes it ideally suited for flat-bottomed preparations and smooth lateral wall finishing, providing the precision and repeatability that professionals require.
Applications
As a versatile carbide cylinder flat cutter dental bur, this instrument addresses the needs of technicians and clinicians working across prosthodontic, laboratory, and industrial applications.
The carbide cylinder flat cutter 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. |
Key Features
- Carbide construction for extended tool life and consistent cutting efficiency
- Cylinder flat geometry for flat-bottomed preparations and lateral finishing
- ISO classification: 500 104 107 007 010
- Supplied as a pack of 6 for continuous workflow
- Made in Germany
Instrument Dimensions
| Head Ø | 1.0 mm (ISO size 010) |
|---|---|
| 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.
FAQ
What ISO classification does this carbide cylinder flat cutter dental bur carry? This bur is classified under ISO 500 104 107 007 010, ensuring standardized compatibility with professional rotary systems.
How many burs are included per pack? Each pack contains 6 burs, supporting uninterrupted workflow in laboratory and clinical environments.
Where is this product manufactured? This instrument is made in Germany by Busch & Co. GmbH, reflecting a long tradition of precision tool manufacturing.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31.104.010 |
| Brasseler USA | H31.11.010 |
| Meisinger | HM31-010-HP |
| SS White | 310066 |
| NTI (Kerr Rotary) | HP557-KC5 |
| Alpen (Coltène) | R600557 |
| Edenta | C31.104.010 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 31 010
| Busch figure | 31 |
| US No. | 557 |
| Shape | Straight Fissure (Cylinder) |
| ISO size / head diameter | 010 (1.0 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 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. The 1.0 mm head is a small size for confined spaces and detail work. The crosscut pattern gives fast, cool material removal; follow with a fine cut for the final surface.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
This is a US No. 557. See all 6 Busch versions — materials, shanks, cuts and packs — on our US No. 557 page.
US No. 557 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No...
