US No. 564 Bur – Busch Straight Fissure Steel, Made in Germany
The US No. 564 is the American number for a straight fissure bur with a 2.5 mm head (ISO size 025): a parallel-sided cylinder with a flat end, so it cuts straight walls and a flat floor in one motion. Busch & Co. manufactures it in Germany as Busch No. 36 025. Every US No. 564 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
Regular price $24.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 564 Do You Need?
The No. 564 in this collection is the steel HP version, linked below by its Busch number.
HP (straight handpiece)1 items
| Busch No. | US No. | Material | Cut | Shank | Best for | Pack |
|---|---|---|---|---|---|---|
| 36 025 | 564 | Steel | Crosscut | HP | Economical laboratory cutting of acrylics and plaster | 6 |
HP (2.35 mm shank, straight handpiece). See the Busch Bur Size Chart for head and shank dimensions.
Speed and Technique
Steel burs are laboratory instruments for the straight handpiece: keep the speed moderate, let the blades do the work, and do not use them on enamel or metal. Maximum recommended speeds for every Busch shape are in our Dental Bur Speed Chart, and reprocessing steps in the Bur Sterilization Guide.
Made in Germany by Busch & Co.
Busch & Co. has manufactured rotary instruments in Engelskirchen, Germany since 1905. Every instrument on this page is a genuine Busch product, precision-ground on a concentric shank under ISO 13485-certified quality management and covered by our Busch warranty.
Clinical Use
- Laboratory and denture work: the HP steel version trims acrylic, adjusts denture bases and reduces plaster models in the straight handpiece.
- Model making: cutting flat-bottomed recesses and straight walls in plaster and stone models; the crosscut blades clear the debris instead of packing with it.
At 2.5 mm the No. 564 is a wide head for bulk reduction and laboratory cutting.
Steel burs are made for laboratory materials; for enamel, dentin and restorative materials in the clinic, choose a tungsten carbide bur.
Care and Reconditioning
Busch steel burs are reusable: clean, disinfect and sterilize them between uses following the manufacturer instructions and replace them once they dull. Our Dental Bur Reprocessing & Sterilization Guide gives the steps for Busch rotary instruments.
Compare With
Related Busch collections: US No. 563 Bur, US No. 562 Bur, Straight Fissure (Cylinder) Burs, Dental Lab Steel Burs, Acrylic Burs for Plastics Technology, and HP Burs for the Straight Handpiece. For bur numbering and dimensions, see the Busch Bur Size Chart and the Dental Bur Glossary.
Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Nearby sizes: US No. 562, US No. 563
FAQ
What is the Busch number for a US 564 bur?
Busch No. 36 025 in steel (HP).
What size is a No. 564 bur?
The No. 564 has a 2.5 mm head diameter (ISO size 025) on a straight fissure bur head, ISO shape 107 (cylinder, flat end).
Are Busch No. 564 burs reusable?
Yes. Carbide and steel burs are cleaned, disinfected and sterilized between patients and replaced when they dull; the Bur Sterilization Guide gives the validated steps.
