US No. 561 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 31 018 – Crosscut – HP | Pack of 6
The carbide cylinder flat end cutter dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding material removal and shaping tasks across multiple disciplines. Classified under ISO 500 104 107 007 018, this carbide cutter features a cylinder flat geometry that delivers clean, controlled cuts with minimal deflection.
Product Overview
Identified as 31 018 (US No. 561), this carbide cylinder flat end cutter dental bur is supplied in a convenient pack of 6, ensuring you maintain consistent workflow without interruption. The flat-end cylinder profile is ideal for creating precise flat-bottomed preparations, smooth surfaces, and well-defined margins. Manufactured in Germany, each bur reflects the high standards of quality associated with Busch & Co. GmbH.
Applications
The carbide cylinder flat end 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 performance
- Cylinder flat end geometry for precise, flat-bottomed results
- ISO Classification: 500 104 107 007 018
- Pack of 6 for professional continuity
- Made in Germany
Whether you are working in a dental laboratory or a technical production setting, the carbide cylinder flat end cutter dental bur provides reliable, repeatable results. The robust carbide material resists wear, maintaining cutting efficiency across extended use cycles.
Instrument Dimensions
| Head Ø | 1.8 mm (ISO size 018) |
|---|---|
| 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 bur? This bur is classified under ISO 500 104 107 007 018.
How many burs are included in one pack? Each pack contains 6 burs.
What applications is this carbide cylinder flat end cutter dental bur suited for? It is suited for model making, plastics technology, crown and bridge technology, and model casting technique.
Where is this product manufactured? This instrument is made in Germany by Busch & Co. GmbH.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31.104.018 |
| Brasseler USA | H31.11.018 |
| Meisinger | HM31-018-HP |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 31 018
| Busch figure | 31 |
| US No. | 561 |
| Shape | Straight Fissure (Cylinder) |
| ISO size / head diameter | 018 (1.8 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. A 1.8 mm head gives enough edge for shaping while still following tooth-sized contours. 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. 561. See all 2 Busch versions — materials, shanks, cuts and packs — on our US No. 561 page.
US No. 561 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No...
