SJ Series Standard Soft Jaws for 3-Jaw Hydraulic Power Chucks

SJ Series Standard Soft Jaws for 3-Jaw Hydraulic Power Chucks

High-quality machinable standard soft jaws with 1.5×60°/3×60° serration pitch, customizable clamping surface, ideal for precision finishing and special-shaped workpiece clamping.
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Description

SJ series standard soft jaws are manufactured from high-quality medium carbon steel with overall quenching and tempering treatment, the essential matching accessories for 3-jaw hydraulic power chucks in precision machining.
  1. Machinable clamping surface allows custom shaping to match irregular workpiece profiles, ensuring perfect contact and uniform clamping force distribution.
  2. Standard 1.5×60° and 3×60° serration pitch designs, fully compatible with all mainstream 5-21 inch 3-jaw hydraulic power chucks on the market.
  3. Precision-machined mounting holes and serration surfaces ensure perfect fit with chuck bodies, guaranteeing high clamping accuracy and repeatability.
  4. Moderate hardness (HRC 28-32) provides excellent machinability while maintaining sufficient rigidity and wear resistance.
  5. Available in multiple sizes to match different chuck specifications, covering all common precision machining requirements.
  6. Standardized interchangeable design allows quick replacement and adjustment, reducing downtime and improving production efficiency.

Complete Specification Table (Unit: mm / kg)

Model S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 Weight (kg) Price
SJ-05 62 25 30 10 4.5 10 14 38 M8 1.5×60° 0.8
SJ-06 73 31 36 12 5 15 20 38 M10 1.5×60° 1.5
SJ-08 95 35 38 14 5 24 25 46 M12 1.5×60° 2.4
SJ-10 110 40 42 16 5 30 30 50 M12 1.5×60° 3.6
SJ-12K 129 50 50 21 6 39 30 50 M16 1.5×60° 6.3
SJ-12S 129 50 50 18 6 39 60 50 M14 1.5×60° 6.5
SJ-15S 165 62 62 25.5 8 37 43 85 M20 1.5×60° 12.5
SJ-21S 180 65 70 25 9 40 60 80 M20 3×60° 15.8

Parameter Explanation

  • S1-S9 : Overall and mounting dimensions (unit: mm), corresponding to the engineering drawings
  • S10 : Jaw serration pitch specification, the key parameter for chuck compatibility
  • Weight : Net weight per single jaw (unit: kg)
  • Model Naming : The number indicates the matching chuck size (e.g., SJ-08 = for 8 inch hydraulic chuck)
  • S/K suffix : S = standard height, K = extended height

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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