CL is a sleeve for interchangeable tool assembly of tools with large internal diameters. The sleeve can be easily switched between different tools.
Pressurizing is carried out with a high pressure grease pump, axially in the sleeve’s flange.
A tool with a hole tolerance of H7 gives an easy slip fit on sleeves meant for interchangeable tool assembly.
When pressurized the sleeve expands against the spindle, thus eliminating any play between the tool and spindle.
ETP HYDRO-GRIP is intended for machine spindle tolerance g6 and tool tolerance H7.