US No. 563 Bur – Busch Straight Fissure Carbide & Steel, Made in Germany
The US No. 563 is the American number for a straight fissure bur with a 2.3 mm head (ISO size 023): 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. 31 023 and Busch No. 36 023. Every US No. 563 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
Regular price $36.99Unit price-
Busch & Co. GmbH
Regular price $19.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 563 Do You Need?
Every No. 563 here has the HP shank, so choose by material; every active product in the collection is linked once below by its Busch number.
HP (straight handpiece)2 items
HP (2.35 mm shank, straight handpiece). See the Busch Bur Size Chart for head and shank dimensions.
Speed and Technique
Run these HP burs at laboratory speed in the straight handpiece with light, intermittent pressure; let the blades do the work. 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 carbide and steel versions trim acrylic, adjust denture bases and reduce plaster models in the straight handpiece.
- Straight-walled cuts: the flat-end cylinder cuts straight-walled slots, channels and flat seats in acrylic, wax and model materials.
At 2.3 mm the No. 563 is a wide head for bulk reduction and laboratory cutting.
The No. 563 is crosscut; its plain-cut twin in the same shape and size is the US No. 63 (Busch 21 023). Crosscut blades cut faster and clear debris; when you need a smooth wall or a finish line, follow with the plain-cut twin or a finishing bur.
Care and Reconditioning
Busch carbide and steel burs are reusable: clean, disinfect and sterilize them between patients 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. 63 Bur (plain-cut), Straight Fissure (Cylinder) Burs, Double Cut Burs: Busch Crosscut Carbide Cutters, Tapered Fissure (Cone) Burs, and HP Burs for the Straight Handpiece. For bur numbering and dimensions, see the Busch Bur Size Chart and the Dental Bur Color Coding & ISO Guide.
Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Nearby sizes: US No. 561, US No. 562, US No. 564
FAQ
What is the Busch number for a US 563 bur?
Busch No. 31 023 in carbide (HP); Busch No. 36 023 in steel (HP).
What size is a No. 563 bur?
The No. 563 has a 2.3 mm head diameter (ISO size 023) on a straight fissure bur head, ISO shape 107 (cylinder, flat end).
What is the difference between a No. 563 and a No. 63?
Same shape and size; one is plain-cut and the other crosscut. The No. 563 is crosscut — crosscut cuts faster and clears debris, plain-cut leaves a smoother surface.
Carbide or steel?
Tungsten carbide for longer edge life and harder laboratory materials; the steel No. 563 is the economical choice for acrylics, plaster and other soft materials in the laboratory.
Are Busch No. 563 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.
