Operating and user instructions for hydraulic expansion chucks
To ensure a fl awless function of the hydraulic expansion chucks, please observe
the following instructions:
Usage of straight shank tools according to DIN 1835 and DIN 6535 form (HA) and B
(HB) up to Ø 20 mm shaft diameter with tolerance h 6 , precision grinded Ra min = 0.3.
Shafts according to DIN 6535 form HE (Whistle Notch) can only be clamped by
using reduction sleeves. All hydraulic expansion chucks are standard balanced to
G 6.3 15,000 rev/min.
Clamping and unclamping the tool
1. Clean the holding fi xture bore and the tool shaft of grease and dirt. Insert tools
up to the end stop. Observe the minimum clamping depth and the length
adjustment range.
2. Clamp the shaft by turning the clamping screw up to the end stop. The tool is
clamped. To avoid breaking of the hydraulic sleeve, do not carry out clamping
action without a tool.
3. To unclamp the tool, turn the screw approx. 5 to 6 revs. counter clockwise and
remove the tool.
Note: Never clamp without a clamped tooling!
1
2
DIN 1835 A/DIN 6535 HA
DIN 1835 B/DIN 6535 HB up to Ø 20 mm
Cleaning
Attention should be paid to the cleanliness of the holding fi xture bore and the
tool shaft.
Temperature
Optimal temperature range between 10 – 50°. Do not use with temperatures
above 80°.
Storage
Store the hydraulic expansion chuck untensioned, cleaned and lightly oiled.
Clamping shafts
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Clamp only tool shafts conforming to the requirements of DIN 1835 form A and
form B (up to 20 mm).
Torque
Moment (Nm) Tolerance of the tool
shaft
6 10 h 6
8 10 h 6
10 10 h 6
12 10 h 6
14 1