Inside the Swiss-type lathe spindle cabin, the bar stock runs through and the guide bush locates. The hydraulic chuck acts as an “invisible finger” — axial hydraulic pressure is converted into radial clamping force, allowing instant clamping and unclamping of the bar, while withstanding all cutting reaction forces from turning and milling.
II. Structure family (JSWAY field version)
Rear-pull hollow hydraulic chuck
• Chuck mounted on the front of the spindle, rotary cylinder at the rear, excellent waterproof and coolant-proof performance.
• Hollow through-hole, bar stock runs through without obstruction, suitable for long-shaft Swiss-type lathes.
Front-mounted integrated hydraulic chuck
• Chuck and rotary cylinder integrated, simple installation, economical price, suitable for short-shaft models.
Wedge-lever composite type
• Wedge block converts axial force into radial force, lever secondary amplification, larger clamping force, centrifugal force self-compensation, suitable for high-speed heavy cutting.
III. On-site identification at a glance**
• Listen: clamping “click”, unclamping “hiss”, no hydraulic impact noise.
• Watch: jaws move radially in sync, bar surface no indentation or scratch.
• Touch temperature: after continuous clamping, chuck housing only slightly warmer than body temperature, no hot hand phenomenon.
IV. Maintenance “two-step method”**
Each shift: wipe jaw taper surface with damp cloth to prevent chip adhesion; check floating stroke for smoothness.
Monthly: oil gun to rotary cylinder to supplement special lithium grease; use feeler gauge to detect jaw floating gap, replace if out of tolerance.
V. Selection & Matching**
• Small diameter long shaft: choose rear-pull hollow chuck, through without obstruction.
• Large diameter heavy cutting: choose wedge-lever composite type, clamping force self-compensation.
• Medical/food grade: optional stainless steel jaws + fully enclosed shield, no rust contamination.
VI. JSWAY Service**
• Factory-calibrated clamping force curve, scan code to check clamping force-displacement graph.
• Provide on-site clamping force re-calibration service to restore factory accuracy.
• Common jaws shipped within hours, reducing customer downtime waiting.
One-sentence summary**
Treat the hydraulic chuck as the “invisible finger” of the Swiss-type lathe — choose the right structure, adjust clamping accurately, maintain diligently — so that every bar clamping is “synchronous, mark-free, constant temperature” — this is another layer of quality insurance JSWAY provides for your long-shaft machining.
