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INTRODUCTION
TOOLING SYSTEMS

Hydraulic Chucks

ISCAR has expanded its toolholder clamping options
by adding hydraulic chucks. These hydraulic chucks Clamping Clamping
range from .250-1.250”. This type of chucking system Screw Sleeve
is used for rotating and stationary applications. Actuator

Main Applications
• Fine and accurate machining
• Reaming
• Drilling
• Finish milling
• Internal turning
Hydraulic
Oil
Axial Adjustment
Screw

.00012"

d
Features 2.5xd
• High runout accuracy of less than .00012”
• Very low torque required to activate the clamping
mechanism, by using a 5/32” Allen key
• Prolongs cutting tool life and improves Operating Instructions
surface finish due to vibration damping
• Easy presetting by using an internal preset screw To ensure correct functioning of the hydraulic chuck,
• All rotating chucks feature a symmetrical and balanced the following instructions should be followed:
-1
design for high speed machining of up to 25, 000 min Tools with cylindrical shanks and shanks Type AB with
• Consistent and secure clamping force when one Weldon flat (DIN 1835 part 1 and DIN 6535 HB)
used within the recommended speed range should have h6 tolerance. Tools in accordance with DIN
• Suitable for both Weldon and cylindrical shank clamping 6535 HE (whistle notch) and Type B with two Weldon
• Very convenient and safe tool change on the machine flats (DIN 1835 part 1) should be used in reduction
sleeves, to avoid damaging the chucking bore.
Two main HYDROFIT chuck types are available
• Taper shanks for rotating applications • The tool shank must be burr-free and free of dirt.
Insert the tool shank up to the stopper. Make sure that
• VDI DIN 69880 in sizes 30 and 40 for the minimum chucking length (L min) is maintained.
stationary applications on CNC lathes
If the minimum clamping depth is not met, there will be
a loss of accuracy, the maximum admissible torque will
be reduced, and the tool holder might get damaged.
• The clamping screw must be turned in manually
with an Allen key to the limit stop. DO NOT APPLY
EXCESSIVE FORCE. Tightening torque: Max.10Nm
Never actuate the actuation screw with a
power screwdriver! Do not attempt to clamp
the chuck without a shank inside as this will
damage the expansion clamping sleeve.
• Do not combine several extensions
• To release the tool, turn the clamping screw in a
counter-clockwise direction until tool can be removed.
The clamping screw is not secured against
dropping out! The vent screw of the hydraulic
system is protected with a resin. Don’t remove it!

606 ISCAR