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Taper burs 38AU

Busch Fig. 38AU Conical Carbide Bur

The tapered Busch carbide bur Fig. 38AU is made from ultra-fine grain tungsten carbide, densified through hot isostatic pressing at elevated temperatures. This manufacturing process gives the bur exceptional hardness, long service life, and outstanding cutting performance.

Optimized for extremely hard jewelry materials such as:
• Platinum
• Titanium
• White gold
• Steel

Shank diameter: 2.35 mm (3/32")
Recommended operating speed: 5,000 – 10,000 rpm

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Busch Fig. 38AU Conical Carbide Bur

– maximum performance for the hardest jewelry materials –

The tapered Busch carbide bur Fig. 38AU is part of the renowned HighTech-TOOLS series by Busch and has been specially developed for the highest demands in professional jewelry manufacturing. Made from ultra-fine grain tungsten carbide and densified through hot isostatic pressing at elevated temperatures, this bur delivers exceptional hardness, durability, and cutting performance.
Optimized for extremely hard jewelry alloys

The HighTech-TOOLS carbide series shows its full strength when working on materials that are notoriously difficult to cut, including:
• Platinum
• Titanium
• White gold
• Steel

Thanks to its extremely dense fine-grain structure, this bur cuts more aggressively than standard carbide burs, produces more precise edges, and delivers a brighter, cleaner finish. This significantly facilitates stone setting and results in visibly improved surface quality.
Durable, powerful, and efficient.

Carbide burs are known for their hardness and long service life – but the Busch® AU series sets a new benchmark. The combination of superior material quality and advanced manufacturing makes the Fig. 38AU particularly:
• long-lasting
• powerful
• wear-resistant
• precise in cutting performance

Tapered carbide bur
Shank diameter: 2.35 mm (3/32")
Recommended operating speed: 5,000 – 10,000 rpm



nameTaper bur

figure38AU / HM

Head-Ø0.70 mm

Head length3.30mm

Versionconical

item No.561407

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