The RDSH1000 is the largest rotary head manufactured by TEI Rock Drills Inc., Montrose, Colo. Supplying 10,000 foot-pounds of torque to the drill string, this rotary head is used on the HEM1000 excavator drill, and also is an option on the TD75 limited-access drill. It primarily is used to install casing for micropiles and turning downhole hammers up to 12 inches. The RDSH1000 has a cast housing that is heat-treated the same as TEI’s percussion parts, providing added strength and durability to the RDSH100.

TEI Rock Drills Inc., Card No. 201