The CBER precision modular boring systems convert precision ER collet holders into precision boring systems. The system fits into ER20, ER25, ER32 and ER40 collet holders. The system is capable of boring holes as small as 0.035” in diameter to as large as 1.700” in diameter. All of the sizes have a standard 0.001” in diameter directing reading adjustment dial. The ER32 and ER40 sizes are also available with a 0.000050” in diameter micro adjusting dial. All sizes are available in a standard and a short length.

The design of the boring system make it especially suited for not only CNC machining centers, but also right-angle boring heads, live tooling adapters and any other machine that uses the ER style collet system.