HC / HCR / HCS Operating instructions for hydraulic chucks HC: conventional HCR: reinforced HCS: slim 3° WWW.SECOTOOLS.COM 10145477, 60HCGB01 © SECO TOOLS AB, 2023. All rights reserved. Technical specifications are subject to change without notice. 1. SAFETY INSTRUCTIONS • This product can only be used within the given parameters. Technical specifications can be found in these operating instructions. The HC, HCR, and HCS hydraulic chucks are intended to clamp only rotation- symetrical tools. • The tool must be inserted at recommended minimum clamping length (see chart on next page). If the minimum clamping length is not followed, there will be a loss of accuracy, transmissible torque and the toolholder might be damaged. • For longer overhangs, heavy tools, and use of extensions, adjust your cutting parameters accordingly. Balancing quality might be impacted. • Do not remove the vent screw of the hydraulic chuck. • The use of shank tools with recesses (eg. Weldon or Whistle Notch) influence the balancing grade and run-out accuracy. • Never heat hydraulic chucks with Shrinkfit heating devices: high risk of burn and damage to chuck. • Wear gloves to protect your hands. 2. CLAMPING/UNCLAMPING • The tool shank tolerance must be of h6 or better. • The tool shank must be free of burrs and/or dirt. • Clean the hydraulic chuck’s bore to remove dirt and grease, before inserting the tool shank. • Insert the tool shank to its full length • Holder should be locked in a vertical position in a Toolboy. • The clamping screw must be tightened in manually with an allen key to limit stop (tightening torque recommended: 10-12 Nm). • Never tighten the clamping screw with a power screwdriver. • To remove the tool, unlock the clamping screw until it becomes free. Beware: the clamping screw is not secured against dropping out. 3. LENGTH ADJUSTMENT • The axial length adjustement must be done with an Allen key via the length adjustement screw. The total adjustment range is 10 mm. • Slightly tighten the clamping screw for easy setting, but never adjust the length setting screw when the tool is completely clamped. 4. MAINTENANCE AND STORAGE • The clamping bore and groove have to be cleaned after every tool change with a cleaning agents which contains solvents. • Before storage, the hydraulic chuck must be slighlty oiled. • Always store the hydraulic chucks in unclamped position. • Control the clamping force before the first use and every 100 tool changes or 3 months. For this purpose, a corresponding test shaft needs to be used (on demand). Verification should be done as follow: insert the test shaft fully into the hydraulic chuck’s bore. Turn the clamping screw to limit stop (tightening torque recommended 10-12 Nm). If the test shaft can be easily removed from the chuck by hand, the clamping force is unsufficient. Contact your local Seco representative for servicing • In case of intensive usage, regular lubrication of the clamping screw is recommended, using copper paste (eg Molykote CU74339). 5. SLOTTED REDUCTION SLEEVES • Clean the sleeve and the tool shank. • Insert the tool into the sleeve until stop against the adjusting ring. • Preset the required tool length by sliding up and down the adjustable ring. Take care that the ring remains in a straight position. • Insert the sleeve with tool into chuck’s bore until face contact. Be sure the chuck is in unclamped position. • Bring the axial stop screw into contact with the adjustable ring. • Proceed with clamping as stated in chapter 2. 6. USABLE TOOL SHANKS Shank Type tol. h6 Cylindrical DIN1835-1A DIN6535 HA Weldon 1 flat DIN1835-1B DIN6535 HB Weldon 2 flats DIN1835-1B DIN6535 HB Whistle & Notch DIN1835-1E DIN6535 HE Direct clamping Direct clamping With reduction sleeve Ø 6-32 mm Ø 0.236-1.260” Ø 6-32 mm Ø 0.236-1.260” Ø 3-25mm Ø 0.118-0.984” Standard type HC and Power type HCR design in HSK-A, DIN, BT, BT T/F, CAT Ø 6-20 mm Ø 25-32 mm Ø 6-32 mm Ø 0.236-0.787” Ø 0.984-1.260” Ø 0.236-1.260” Standard type HC design in Seco-Capto, CAT T/F, and Slim 3° design type HCS Ø 6-32 mm NO NO Ø 0.236-1.260” Ø 6-20 mm Ø 25mm Ø 6-25 mm Ø 0.236-0.787” Ø 0.984” Ø 0.236-0.984”
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