03K-Series-3-Jaw-Hollow-Hydraulic-Power-Chuck-Hoshing

03K Series 3-Jaw Hollow Through-Hole Hydraulic Power Chuck

High-precision 3-jaw hollow hydraulic chuck with large through-hole, high clamping force and rotational speed, ideal for CNC lathe bar feeding and high-efficiency turning operations.
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Description

03K series 3-jaw hollow hydraulic power chucks are manufactured from high-strength alloy steel with overall quenching and precision grinding, providing reliable workholding solutions for CNC lathe machining.
  1. Large hollow through-hole design allows long bar stock to pass through, perfect for continuous automatic bar feeding production lines.
  2. Optimized wedge mechanism delivers stable and powerful clamping force, ensuring secure holding during heavy-duty cutting and high-speed rotation.
  3. High runout accuracy ≤0.01mm, delivering excellent machining precision and surface finish.
  4. Hardened jaws and guideways provide excellent wear resistance and long service life.
  5. Standard mounting dimensions compatible with most common CNC lathe spindles and hydraulic cylinders, easy to install and maintain.

Complete Specification Table (Unit: mm / kg)

Mounting Dimensions

MODEL Spindle A B C (H6) D E F G H K J L M
03K05 A2-4 135 72 110 63.513 15 4 96 82.55 33 3-M10 13 14
03K06 A2-5 169 91 140 82.563 15 5 116 104.8 45 6-M10 16 20
03K08 A2-6 210 103 170 106.375 17 5 150 133.4 52 6-M12 18 25
03K10A06 A2-6 254 120 220 106.375 25 5 171.4 133.4 75 6-M16 18.5 30
03K10A08 A2-8 254 113 220 139.719 18 5 190 171.4 75 6-M16 24 30
03K12A06 A2-6 304 129 220 106.375 25 6 171.4 133.4 91 6-M16 18.5 30
03K12A08 A2-8 304 122 220 139.719 18 6 190 171.4 91 6-M16 25 30

Thread & Additional Dimensions

MODEL N (max) N (min) O (max) O (min) P (max) P (min) Q R S T U (max) V W X
03K05 26.5 23.8 19.75 7.75 17 7 25 10 20 2 M40×1.5P 3×M6 31.5 62
03K06 32 29.25 22.75 9.25 26 14 31 12 19 2 M55×2 3×M6 37.5 73
03K08 38.7 35 29.75 14.75 31.5 15.5 35 14 20.5 2 M60×2 6×M6 39 95
03K10A06 51 46.6 33.75 14.25 33.5 14.5 40 16 25 2 M85×2 6×M12 43 110
03K10A08 51 46.6 33.75 14.25 26.5 7.5 40 16 25 2 M85×2 6×M8 43 110
03K12A06 61.3 56 45.75 15.75 33 10 49 21 28 2 M100×2 6×M12 50.5 129
03K12A08 61.3 56 45.75 15.75 26 3 49 21 28 2 M100×2 6×M8 50.5 129

Performance Parameters

MODEL Grip Dia (mm) Jaw stroke Plunger Stroke Max.pull Force Max.gripping force Max.speed Weight Matching Cylinder Max.hydraulic pressure Operating HARD JAW Price
max min mm mm kgf KN kgf KN r.p.m(min⁻¹) kg kg/cm² Mpa
03K05 135 12 5.4 10 1784 17.5 3671 36 7000 6.7 TK536 2.8 29 HJ-05
03K06 169 15 5.5 12 2243 22 5812 57 6000 13.7 TK646 2.8 28.6 HJ-06
03K08 210 20 7.4 16 3549 34.8 8769 86 5000 23.6 TK852 2.65 27 HJ-08
03K10A06 254 31 8.8 19 4385 43 11319 111 4200 41.5 TK1075 2.7 27.5 HJ-10
03K10A08 254 34 8.8 19 4385 43 11319 111 4200 40 TK1075 2.7 27.5 HJ-10
03K12A06 304 42 10.6 23 5608 55 14684 144 3300 67 TK1291 2.7 27.5 HJ-12K
03K12A08 304 50 10.6 23 5608 55 14684 144 3300 64 TK1291 2.7 27.5 HJ-12K

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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