3S Series 3-Jaw Large Size Solid Hydraulic Power Chuck

3S Series 3-Jaw Large Size Solid Hydraulic Power Chuck

Extra-large 3-jaw solid hydraulic chuck with ultra-high clamping force and rigidity, specially designed for heavy-duty turning of large and heavy workpieces on heavy-duty CNC lathes.
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Description

3S series large size 3-jaw solid hydraulic power chucks are manufactured from high-strength alloy steel with overall quenching and precision grinding, providing exceptional rigidity and stability for heavy-duty machining of large workpieces.
  1. Extra-large solid body structure delivers maximum rigidity and vibration damping, capable of withstanding extreme cutting forces during heavy machining of large and thick workpieces.
  2. 3-jaw self-centering design automatically centers round and hexagonal workpieces, ensuring uniform clamping force distribution.
  3. Optimized wedge mechanism provides extremely high and stable clamping force up to 265KN, guaranteeing secure holding even at high rotational speeds.
  4. High runout accuracy ≤0.015mm, delivering excellent machining precision and surface finish.
  5. Hardened jaws and guideways offer superior wear resistance and long service life.
  6. Standard mounting dimensions compatible with A2-8/A2-11/A2-15 heavy-duty lathe spindles and large hydraulic cylinders.

Complete Specification Table (Unit: mm / kg)

Mounting Dimensions

MODEL Spindle A B C (H6) D E F G H K L M
3S15 A2-11(A2-8) 381 141(130) 300 196.869(139.719) -33 6 260 235 6-M20X2.5P 32 43
3S18 A2-11(A2-8) 450 141(130) 300 196.869(139.719) -33 6 260 235 6-M20X2.5P 32 43
3S21 A2-15(A2-11) 530 148 380 285.775(196.869) 27 6 330.2 330.2 6-M24x3P 33 60
3S24 A2-15(A2-11) 610 148 380 285.775(196.869) 27 6 330.2 330.2 6-M24x3P 33 60
3S32 A2-15(A2-11) 800 148 380 285.775(196.869) 27 6 330.2 330.2 6-M24x3P 33 60

Thread & Additional Dimensions

MODEL N (max) N (min) O (max) O (min) P (max) P (min) Q R S T U V W X Y Z
3S15 69.05 60.97 58.05 40.05 82(71) 47(36) 62 25.5 55 7 M30x3.5P 60 68 165 171.4 137.5
3S18 99.46 91.38 58.05 40.05 70(59) 35(24) 62 25.5 55 7 M30x3.5P 60 68 165 171.4 157.5
3S21 80.49 72.41 101.8 41.8 70 35 65 25 55 7 M30X3.5P 60 75.5 180 235 155
3S24 119.49 111.41 101.8 41.8 70 35 65 25 55 7 M30x3.5P 60 75.5 180 235 165.1
3S32 119.49 111.39 197.8 41.8 70 35 65 25 55 7 M30x3.5P 60 75.5 180 235 200

Performance Parameters (Corrected table structure)

MODEL Grip Dia (mm) Plunger Stroke (mm) Jaw stroke (mm) Max. pull force Max.gripping force Max.speed (r.p.m/min⁻¹) Weight (kg) Matching Cylinder Max.hydr pressure Price
max min kgf KN kgf KN kg/cm² Mpa
3S15 68 381 35 16 8650 81 25290 248 3000 104.1 RH-200 32 3.1
3S18 100 450 35 16 8650 81 25290 248 2700 138.5 RH-200 32 3.1
3S21 80 530 35 16 8650 81 27000 265 1900 204.8 RH-200 33 3.2
3S24 155 610 35 16 8650 81 27000 265 1700 260 RH-200 33 3.2
3S32 155 800 35 16 8650 81 27000 265 1100 455.4 RH-200 33 3.2

Applications

CNC Machining

Ideal for CNC lathe, milling and machining center operations, ensuring high-precision dimensional control and reliable tool holding for mass production.

Quality Control Labs

Suitable for quality inspection departments and calibration labs, providing accurate measurement data to verify product compliance with ISO and industry standards.

Mold & Die Making

Perfect for mold and die workshops, where micron-level precision tools and gauges are essential for complex cavity machining and final inspection.

OEM/ODM Projects

Customizable solutions for OEM and ODM manufacturing partners, offering tailored measuring tools and CNC accessories to meet unique production requirements.

Automotive Manufacturing

Designed for automotive component production lines, ensuring consistent precision and durability in engine parts, transmission components and assembly processes.

Aerospace & Precision Engineering

Ideal for aerospace and defense manufacturing, where ultra-high precision instruments and reliable tool holders meet strict quality and safety requirements.

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