MiniDrill is a unique machining platform designed to safely perform multiple machining operations on heat exchangers, boilers and similar thermal exchange equipment. Designed with operator safety in mind, this system can drill, ream, bore and even re-machine serrations in steam drums quickly and safely. With a 80 mm (3.150”) travel, this tool is ideally suited for the majority of plant equipment. The system is fully torque reacted with 2 clamping arms that are independent of one another and can accommodate most pitch configurations. Once locked into the tubes, the MiniDrill is extremely stable.
Available tools working with minidrill
Tube wall reducing head with carbide inserts.
Drill for machining holes in tube plugs before removing them with our special plug removal tool.
Safely ream tube sheets.
Boring head to machine heavy wall boiler tubes, safely and efficiently prior to collapsing through the drum.
Other available accessories
MINIDRILL WITH FAST CLAMPING
MiniDrill with the fast pneumatic clamping system is ideal for manufacturing plants that make large amounts of work on tubes and pipes. It offers rapid tube to tube cycle time, increased productivity with little operator fatigue.
Example tool application
Reducing tube wall on a 6” thick tube sheet prior to punching.
KRAIS Tube Expanders is a company with almost 40 years of experience in designing, manufacturing and delivering top quality tube tools.