Chucks CoroGrip

​Recommended maximum spindle speeds are specified for each chuck type and size. The high clamping forces in combination with the precision and balancing enable high speed machining.

 

Minimum torque transmission required for machining

Material : low-alloy steel (CMC02.2)
Operation : full slot milling
Tool : CoroMill 390 indexable endmill
Torque values in ft-lbs (Nm)

 

 

 

​To install and operate this hand pump, all instructions and usage guidelines must be followed exactly. The floor and placement dimensions must be checked before the system is installed to ensure a secure installation operation for the personnel as well as for the system itself. The high pressure hand pump must be assembled according to instructions to ensure safety and durability during operation. All exposed parts and hoses have to be assembled in such a way to prevent risk of injury. Only specially trained personnel should be allowed to assemble this system or prepare for storage. Please contact your Sandvik Coromant sales representative for assistance.

The system should be placed and operated on a horizontal floor/base. The system has been built to be used in rooms which are not exposed to the effects of the weather. Storing the system in a harsh and excessively moist environment or outdoors can lead to corrosion or other forms of damage for which we cannot accept any liability.

 

 

 

​Clamping a tool (unclamping)

• The handle has to be positioned so that the marked connections A and B match the marks on the precision power chuck.
• Use the sleeve to hand tighten the handle. The nozzles are pushed automatically onto the chuck by hydraulic pressure.
• Insert the tool into the chuck.
• Set the reversing valve to position A. (Unclamping position B).
• Use the high pressure hand pump until the hydraulic pressure of 7250 PSI (500 bar) is reached. (Unclamping position B reaches 11600 PSI (800 bar)).
• Set the reversing valve to position T. The hydraulic pressure now descends to zero bar.
• Remove the handle from the chuck.
• The chuck is now ready to be implemented into the tooling machine.

 

 

 

 

 

 

​Do's

Work in accordance with the operating manual
Follow the short user guide for hand pump - Start up/Operating instructions
Follow the short user guide for bench-pump - Start up/Operating instructions

 

Don’ts

• Don't screw the handle in only halfway. Assemble the handle to connector A+B correctly. Always screw the handle completely onto connector A + B.
  (The connectors have a valve inside which opens only if the connection is 100% perfect).
• Don’t damage the nozzles or the inlet shape when assembling the handle on the chuck!
• Don’t mix up connector A with B, as this will result in a clamping pressure of 11600 PSI (800 bar), which is too high.
• Don’t pump too fast with the hand-operated pump when nearing the maximum clamping pressure! The pressure relief valve works with a tight tolerance when working at lower speed (no peaks!).
• Don’t work with dirty oil!
• Don’t store the handle in a dirty place, or where the nozzles could get damaged!
• Don’t bend the hoses to excess: the handles have special high pressure hoses which are still flexible at 11600 PSI, even with the protection safety hose.
• Don’t kink the hose! The hose will break when kinked.
• Don’t leave the pump under pressure! Always release the pressure by switching the reversing valve to T (neutral position) after clamping and unclamping.
• Don’t take the handle off the chuck before you have released the pressure!
• Don’t use a handle which is missing its cup protection!
• Don’t forget: The maximum recommended clamping pressure is 7250 PSI (500 bar).

 

 

 

​To install and operate this bench pump, all instructions and usage guidelines must be followed exactly. The floor and placement dimensions must be checked before the system is installed to ensure a secure installation operation for the personnel as well as for the system itself.

The high pressure pump must be assembled according to instructions to ensure safety and durability during operation. All exposed parts and hoses have to be assembled in such a way to prevent risk of injury. Only specially trained personnel should be allowed to assemble this system or prepare for storage. Please contact your Sandvik Coromant sales representative for assistance.

To operate the system, it must be positioned on a flat, horizontal surface. The system must also be used in conditions which are not exposed to effects of the weather.

Storing the system in a harsh and excessively moist environment or outdoors can lead to corrosion or other forms of damage, for which we cannot accept any liability.

Note: More information is available in the Operating Manual and Short Users Guide.

 

 

 

 

 

 

• The handle has to be positioned in a way that the marked connections A and B match the marks on the precision power chuck.
• Use the sleeve (handle screw) to hand tighten the handle onto the power precision chuck. The nozzles are pushed automatically onto the chuck (hydraulic pressure).
• Insert the tool into the chuck.
• Switch the reversing valve to A (unclamping position B). The pneumatic high-pressure pump starts automatically and pumps until the defined clamping pressure of 7250 PSI (unclamping 11600 PSI) on the power precision chuck has been reached.
• Switch the reversing valve to position T. The hydraulic pressure now descends to 0 PSI.
• Press the push button for the vacuum function for a duration of about 10 seconds to produce a vacuum in the high pressure hoses.
• Take the handle off the chuck.
• The tool is now ready to be put into the machine tool.
  
Note: More information is provided in the Operating Manual and Short Users Guide.

 

 

 

 

 

 

 

• Before inserting the tool shank, always make sure that the shank is undamaged, holds the correct dimensions and is clean – especially the bore of the chuck.
• If possible, insert the tool shank all the way. The transmittable torque will be reduced in relation to the reduction of insertion.
• When storing the chuck, protect it against corrosion by spraying it with oil.
• Never use excessive force when trying to insert a tool shank into the chuck.
• These chucks are precision tool holders and should be handled with care.
• The chucks should never be heated to temperatures above C 167°F (75°C). (This ensures that the seals are not damaged).
• Do not exceed 7250 PSI in clamping pressure in the CoroGrip chuck: this can result in chuck jamming. If more clamping pressure is needed, consider using a larger chuck with reduction sleeves.