HSD ES919 NC - Technical Specifications of Components; Bearings; Tool Holder Locking and Release Device

______HSD Technological equipment for Automation _____________________________________
5801H0017 Rev. 02 _________________________________________________________ 35/98
7.7 TECHNICAL SPECIFICATIONS OF COMPONENTS
7.7.1 Bearings
The front of the shaft is supported by a pair of precision angular contact ball bearings, 40 mm
diameter for versions with ISO 30 tool fittings and 45 mm diameter for versions with HSK F63
fittings.
The rear of the shaft is supported by a pair of precision angular contact ball bearings of 30 mm
diameter.
All bearing pairs are pre-loaded and lubricated for life with special high speed grease.
The bearings are lubricated for life and do not require greasing.
7.7.2 Tool holder locking and release device
The tool holder is mechanically locked by springs that develop an axial force of:
ELECTRO-SPINDLE
MODEL
AXIAL SPRING
FORCE
AXIAL FORCE
ON TOOL HOLDER
ES915 ISO 30--- 3200 N ± 10% _3000 N ± 10%
ES919 ISO 30--- 3500 N ± 10% _3200 N ± 10%
ES919 HSK F63 3850 N ± 10% 11000 N ± 10%
Tool release is achieved by the movement of a single acting, double stage, compressed air
cylinder operating at a pressure of 7 bar (100 PSI).
i
The axial force applied to the tool holder by the locking springs is
guaranteed to remain constant for a minimum of 2,000,000 tool change
cycles.
1 tool change cycle = tool locked / tool released / tool locked