HYDROFIT
NPA 11/2019
Hydraulic Chuck for all Applications:
Milling (Roughing, Finishing), Drilling, Tapping and Reaming
Highlights
ISCAR is expanding the HYDROFIT product line by introducing new Heavy Duty hydraulic chucks for all applications.
The new HYDROFIT HD chucks are available with BT, DIN69871 and HSK shanks.
- Longer tool life compared to all other clamping systems
- Reduced tool costs
- Compact design
- High torque transmission
- Best surface finish - no chatter marks
- Excellent vibration damping
- Runout accuracy < 0.003 mm
- Fast tool change
- Suitable for all all types of shanks, including shanks with flat surfaces
Applications
Milling
Suitable for difficult high-volume machining, with up to 2,000 Nm torque
with Ø32 mm (in dry clamping conditions).
Reaming
Outstanding vibration damping for best workpiece surfaces
and long-lasting runout for high dimensional accuracy.
Drilling
Excellent performance due to vibration damping and runout
accuracy < 0.003 mm
Tapping
Ideal for tapping with its high torques and outstanding vibration damping.
Technical data
Clamping Ø |
max. r.p.m. in min–1 L1 up to125 mm |
Admissible transmissible torque (Shank minimum size h6) |
Minimum clamping depth |
Admissible radial force F at the toolholder at an overhang of 50 mm |
Shank-Ø L in mm |
Ø 12 |
50000 |
110 Nm |
36 mm |
975 N |
12h6 |
Ø 16 |
50000 |
350 Nm |
39 mm |
2115 N |
16h6 |
Ø 20 |
50000 |
520 Nm* |
41 mm |
2790 N |
20h6 |
Ø 32 |
25000 |
900 Nm** |
51 mm |
9750 N |
32h6 |
* BT 30, HSK50, C4: 400 Nm
** C6, Ø32: 800 Nm
Operating temperature: 20-50°C
Max. coolant pressure: 80 bar
Adjustment range of the length adjustment: 10 mm
Advantages
High torque of up to 900 Nm (Ø 20) and 2,000 Nm (Ø 32) for highest volume machining
Due to the compact design, holding forces and a high torque transmission are guaranteed.
Advantages:
Highest material removal rate.
High radial rigidity for better part geometry accuracy
The optimal radial rigidity, which results from the robust tool holder body, prevents lateral deflection during metal cutting.
Advantages:
High part accuracy geometry at the workpiece and highest
material removal rates e.g. 400 cm³/min (25 in³/min) with
42CrM04 (4140)*.
* depending on the machine tool and the tool
Permanent runout accuracy of less than 0.003 mm – without any fluctuations
This ensures best surface results due to a uniform cutting action and highest reproducibility.
Advantages:
Safe and precise machining.
Excellent vibration damping
The hydraulic system absorbs vibrations, assuring smooth running and the best workpiece surfaces.
Advantages:
High surface quality
Machine spindle is protected from damage
Increase in service life
Tool change within seconds for easy handling
Turn the actuation screw with an Allen key to the dead stop.
The clamping results in a runout accuracy of less than 0.003 mm without the need for additional peripheral equipment.
Advantages:
Time savings due to reduced setup times and no investment
costs for additional clamping devices.
All shaft types can be clamped
All tools (Ø 3 to 32 mm) with a smooth cylinder shank, as
well as recesses according to DIN 1835 Form B, E and DIN
6535 Form HB, HE, can be clamped directly with or without
intermediate sleeves.
Advantages:
No additional costs for new tools.
Suitable for HSC / HPC machining –
precision-balanced as standard
With a balancing grade G2.5 at 25,000 rpm, the HSK-A 63
version for high speeds is perfectly suitable for HPC / HSC
machining centers.
Advantages:
Perfect for HSK high speed spindles.
Maintenance-free
The sealed system blocks the penetration of dirt, coolant,
lubricants or chips. The clamping area will not be damaged
and proper function is guaranteed.
Advantages:
Maintenance-free and a long service life.
Innovative Hydraulic Expansion Technology
- 1. Actuation screw
The actuation piston is moved with the actuation screw and can be tightened to a dead stop without a torque wrench.
- 2. Actuation piston
The actuation piston compresses the hydraulic fluid into the chamber system.
- 3. Clamping sleeve and chamber system
The clamping sleeve expands against the tool shank.
This clamping process first centers the tool shank before
fully clamping it over the whole surface. The chamber
system fills with hydraulic fluid, exerting a damping effect
on the clamped tool. Wear on the cutting edge of the tool
is minimized and service life is increased by up to 40 %.
- 4. Toolholder body
The body includes the machine interface, e.g. HSK, SK, JIS-BT, CAT, etc.
- 5. Length adjustment screw
For fast and easy presetting.
- 6. Tool
The tool is clamped centrically to the center axis – highest runout and repeat accuracy of less than 0.003 mm
- 7. Groove
The enormous clamping pressure of the HYDROFIT HD chuck creates a displacement of oil, grease, or lubricant residues into the groove, causing surfaces to remain dry.
HSK A-HYDRO HD
Heavy Duty, Short Hydraulic Chucks With HSK DIN69893 Form A Shanks
* Optional, should be ordered separately
BT-HYDRO HD
Heavy Duty, Short Hydraulic Chucks With BT Form ADB Shanks
* Optional, should be ordered separately
DIN69871-HYDRO HD
Heavy Duty, Short Hydraulic Chucks With DIN69871 form ADB shanks
* Optional, should be ordered separately
Care, Storage and Maintenance
- To secure the clamping force, clean the clamping bore and groove after every tool change
(use a cleaning agent that contains solvents)
- Before storage, the whole surface should be oiled slightly
- Always stock the chucks in an unclamped position and protected against corrosion
- Depending on environmental conditions, it may be necessary to adjust
cleaning and
lubrication of the actuation screw correspondingly, particularly in cases of a high number of
clamping cycles, high operating temperature, abrasive dirt or swarf
For optimal lubrication
of the actuation screw, we recommend the use of copper paste
MOLYKOTE CU 7439 (100 g tube)
- Basic repairs should be performed at ISCAR
Warranty
The warranty period for HYDROFIT HD chucks is 12 months after delivery date from factory,
assuming appropriate use and respecting the recommended operating and maintenance
regulations. Basic tool and machine contact components and wear parts (actuation screw and
seal) are not part of the warranty.
The NPA11-2019's pdf file:
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