INDUSTRY COMPONENT

Movable Jaw

Movable jaw is the adjustable clamping component in vises and clamping jaws that applies pressure to secure workpieces during machining operations.

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Component Specifications

Definition
The movable jaw is a precision-engineered component in clamping systems that translates mechanical force (typically via screw or hydraulic mechanisms) into controlled clamping pressure. It moves linearly along the vise body to accommodate various workpiece sizes while maintaining parallel alignment with the stationary jaw. This component features precisely machined surfaces for direct workpiece contact and often includes replaceable inserts or hardened faces to prevent damage to both the jaw and workpiece.
Working Principle
The movable jaw operates on mechanical advantage principles, converting rotational force from the vise screw into linear clamping force. As the screw rotates, it drives the jaw along precision-ground ways or guide rails, maintaining perpendicular alignment to the workpiece. The jaw distributes force evenly across the contact surface through its rigid construction and precise geometry, ensuring secure holding without distortion.
Materials
Typically manufactured from hardened alloy steel (AISI 4140, 4340), tool steel (D2, A2), or ductile iron. Hardness ranges from 45-60 HRC for wear resistance. High-precision versions may use carbide inserts or ceramic coatings on contact surfaces.
Technical Parameters
  • Travel Range 50-300 mm
  • Clamping Force 500-5000 kg
  • Weight Capacity 10-200 kg
  • Surface Flatness 0.005-0.02 mm
  • Mounting Standard ISO 10889 Type A/B
  • Parallelism Tolerance 0.01-0.05 mm
Standards
ISO 10889, DIN 6343, JIS B 6191

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Movable Jaw.

movable jaw vise jaw clamping jaw workholding component machine vise parts adjustable jaw industrial clamping Movable Jaw in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Clamping Jaws / Vise

Mechanical clamping components that secure profiles or workpieces in a clamping system

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A precisely adjustable aperture that controls the width and alignment of light entering a spectrometer.

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Engineering Analysis

Risks & Mitigation
  • Wear and loss of precision
  • Improper alignment causing workpiece damage
  • Over-tightening leading to component failure
  • Material incompatibility with workpiece
FMEA Triads
Trigger: Abrasive wear from repeated clamping
Failure: Loss of parallelism and clamping force
Mitigation: Regular inspection and replacement of wear surfaces; use of hardened inserts
Trigger: Improper maintenance of guide ways
Failure: Binding or uneven movement
Mitigation: Regular cleaning and lubrication of sliding surfaces
Trigger: Excessive clamping force
Failure: Cracking or permanent deformation
Mitigation: Use torque-limiting devices and proper operator training

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.01mm parallelism, ±0.005mm flatness for precision grades
Test Method
Coordinate measuring machine (CMM) verification, surface plate inspection with dial indicators, clamping force testing with load cells

Buyer Feedback

★★★★☆ 4.9 / 5.0 (8 reviews)

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Movable Jaw arrived with full certification."

"Great transparency on the Movable Jaw components. Essential for our Machinery and Equipment Manufacturing supply chain."

"The Movable Jaw we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

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Frequently Asked Questions

What is the difference between movable and stationary jaws?

The movable jaw adjusts to accommodate different workpiece sizes while applying clamping force, whereas the stationary jaw remains fixed and provides the opposing reaction force. Both must maintain precise parallelism for effective clamping.

How often should movable jaws be inspected for wear?

Inspect every 500 operating hours or monthly in continuous use. Check for surface wear, parallelism deviation exceeding 0.05mm, and any damage to mounting surfaces or guide ways.

Can movable jaws be customized for special applications?

Yes, they can be manufactured with special geometries, materials, or surface treatments for specific workpiece shapes, materials, or environmental conditions.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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