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SuperQ Kits
Maillefer Bur Kits
SuperQ burs are the finest German-made burs. Standard 2.35 mm
(3/32") shank. Extremely accurate and sharp. Very economical for stone
setters and jewellers. Maximum safe cutting speeds for SuperQ tool steel
burs vary by bur diameter.
Maillefer Tool Steel Burs
Maximum Safe Cutting Speeds
Bur Diameter
|
Max Speed
(RPM)
|
0.5 mm
|
30,000
|
1.0 mm
|
30,000
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1.5 mm
|
25,000
|
2.0 mm
|
18,500
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2.5 mm
|
15,000
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3.0 mm
|
12,500
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3.5 mm
|
10,000
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4.0 mm
|
9,000
|
4.5 mm
|
8,000
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5.0 mm
|
4,500
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