Busch Steel Burs - Ordering Information & Recommendations

• Recommended Speeds
• Table of Sizes
• Shank Types and Lengths

Recommended Speeds

The following speeds are for guidance only. Variations above or below these speeds according to manner of use and particular material may also be satisfactory. Always use safety glasses.

ISO No.	Busch No.	In the Dental Practice	In the Dental Laboratory
		Dentine	Acrylics	Metal/Hard Plastics
005—007	4/0—2/0	4,000—    9,000	70,000—100,000	63,000—  70,000
008—010	0—2	2,500—    5,000	60,000—  75,000	40,000—  60,000
012 + 014	3 + 4	1,800—    3,200	50,000—  80,000	27,000—  50,000
016 + 018	5 + 6	1,400—    2,400	40,000—  60,000	20,000—  40,000
021 + 023	7 + 8	1,100—    2,400	30,000—  45,000	15,000—  30,000
025 + 027	9 + 10	900—    1,500	25,000—  38,000	13,000—  25,000
029 + 031	11 + 12	800—    1,300	22,000—  33,000	11,000—  22,000
033 + 035	13 + 14		19,000—  29,000	9,700—  19,000
037 + 040	15 + 16		17,000—  26,000	8,600—  17,000
042 + 045	17 + 18		15,000—  23,000	7,600—  15,000
047 + 050	19 + 20		13,000—  20,000	6,800—  13,000
055 + 060	21 + 22		10,000—  17,000	5,700—  11,000
070 + 080	24 + 26		8,000—  14,000	4,000—    9,000
100 + 110	30 + 32		5,000—  10,000	2,900—    6,000
120 + 130	34 + 36		5,000—    8,000	2,700—    5,000
140 + 160	38 + 42		4,000—    7,000	2,000—    4,000

Table of Sizes

Printable Table of Sizes PDF - Scale to 100% when printing

Shank Types and Lengths

The available shank types are stated near the illustrations. The overall length may vary due to extra length head or neck. As all monitors vary, we regret that none of the images in our online catalog can be to scale. Please refer to the information listed with each illustration, or request our catalog by mail, which includes images to scale.

Abbr.	Shank	Diameter	Length
HP	Handpiece	Ø 2,35 mm	44,5 mm — 1.752 inch
RA X-LG	Extra Long		26,0 mm — 1.043 inch
RA	Right Angle	Ø 2,35 mm	22,0 mm — 0.885 inch
FG		Ø 0,6 mm	19,0 mm — 0.748 inch

All rights to make technical changes reserved.