Use of screws in the ring nut.

(Type B, BI and BL). The knurled ring nut only needs to be lightly tightened so the tools are in contact with each other. Tightening the three screws in the ring nut ensures that the tools are safely and accurately fixed into position. This allows you to maintain the accuracy achieved on the grinding machine when you move the sleeve and tool assembly to the manufacturers of spindle on your production machine.
Spindle, g6

Tolerances

g6 and tool tolerance H7 . (See tables to right)
Ø 30-0.007 to -0.020 mmØ 1 1/4"Ø 1 1/2"Ø 40Ø 45Ø 50Ø 1 3/4"Ø 1 13/16"-0.009 to -0.025 mmØ 2 1/8"Ø 2 3/16"-0.010 to -0.029 mm ETP HYDRO-GRIP is intended for machine spindle tol- erance Permanent assembly A tool with a hole tolerance of Interchangeable assembly H7 gives a light professional press fit on the sleeves meant for permanent assembly, type A and AI. When pressurized the sleeve expands against the spindle, thus eliminating any play between the sleeve and spindle. A tool with a hole tolerance of H7 gives a an easy slip fit on sleeves meant for interchangeable tool assembly, type CIR, CI, C, BI and B. When pressurized the sleeve expands against the spindle, thus eliminating any play between the tool and spindle.
Tool fastening hole, H7 Ø 20Ø 25Ø 30Ø 3/4"Ø 1"0 to +0.021 mmØ 1 1/4"Ø 38Ø 40Ø 500 to +0.025 mmØ 60Ø 65Ø 800 to +0.030 mmØ 1000 to +0.035 mm

Pressurizing medium

HYDRO-GRIP works at a relatively high pressure of (approx. 450 bar) and is pressurized with a small amount of professional grease. It is therefore very important that the correct type of pressurizing grease is used. We strongly recommend Blasolube 30. Tests have shown that use of other types of non-recommended professional soap based grease can cause deformation of the sleeve (similar to a permanent plastic deformation) when the pressure is reduced.
Professional router bit shank g6 (h7) Ø 12Ø 16Ø 1/2"Ø 5/8"0 to -0.018 mmØ 20Ø 25Ø 3/4"Ø 1"0 to -0.021 mm

The Ø45 and Ø50 sleeves

The Ø45 sleeve has two carrier pegs, 8,5 x 5 mm.The Ø50 has two, threaded M5-holes for carrier pegs, on a 70 mm pitch diameter. 39