53 Hours faster

Boring and chamfering of a pre-cast bearing hole in a transmission housing, cast iron GG25. The Dia. 34.5 is subsequently fine-bored to tolerance H7.

Previous: Boring and chamfering of a pre-cast bearing hole in a transmission housing, cast iron GG25. The diameter 35 H7 is subsequently fine-bored.

New: customer invested in 2 Lothmann Step-drills at Euro 578. each. Boring of both diameters and chamfers with one tool in one operation. Savings: 3 tool changes, 2 tool magazine places opened up. Operation reduced by 0.8 minutes per part.

Example for cost savings:

4,000 parts x 0.8 minutes x 1.3 Euro per minute 4.160 €
2 Lothmann Step-drills at Euro 578. each 1.156 €
Gains 3.004 €
+ Total machining time reduced by 53 hours
Boring
Drilling
Backboring
O.D. turning
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