Seco Tools Inc. has announced the development of grade RX2000 with a surface hardness coating of up to 3,200 HV for increased productivity and tool life in Seco Precimaster reaming system applications, which feature exchangeable throwaway heads. The new RX coating has a low friction co-efficient to minimize the risk of built-up edge and improve chip evacuation. In conjunction with a micrograin substrate, this super-thin (0.00008") coating provides enhanced surface finish, chip control and tool life, according to the company. When compared to other reaming grades, the RX2000 has reportedly shown a 200 percent increase in tool life in forged steel applications. The RX2000 is well-suited for all materials except nonferrous, and works well in mass production application environments that can handle increased cutting data. The Precimaster reaming system combines a well-engineered body with internal through-coolant capability for through- or blind-hole finishing. Exchangeable reaming heads are available in sizes from 4mm to 60mm. The clamping system allows for accurate repositioning of the cutting head for H7 hole tolerance achievement. Additionally, the location of the clamp on the tool body makes it easy to change reaming heads without removing the tool from the machining spindle.