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Tech Tip #129 - Using Hydraulic Chucks
- Remove all grease from the hydraulic chuck and cutting tools before using.
- Insert the cutting tool into the clamping bore as far as the stop pin /stop screw will allow.
- Adjust the cutting tool length with a hex wrench.
- Always hand-tighten the clamping screw with a hex wrench as far as the stop limit. Never try to adjust the stop pin when the hydraulic chuck is in the clamping position.
- For best accuracy, use a round shank (no flats) with h6 tolerance and no bushing.
- Weldon shanks can be gripped without reducer collets, ¾” (20 mm) maximum diameter. However, the use of reducer collets for all flatted shanks is recommended.