INDUSTRY COMPONENT

Arm Body

The structural frame of a tool change arm that provides rigidity and houses internal mechanisms for automated tool switching in CNC machines.

Component Specifications

Definition
The Arm Body is the primary structural component of a Tool Change Arm, engineered to withstand dynamic loads during high-speed tool exchange operations. It serves as the mounting platform for grippers, sensors, and drive mechanisms while maintaining precise alignment between the spindle and tool magazine. This component ensures vibration damping, thermal stability, and protection of internal components in industrial automation environments.
Working Principle
The Arm Body operates as a rigid lever system that rotates or extends between the machine spindle and tool storage. It transfers mechanical force from actuators while maintaining geometric accuracy through precision bearings and alignment features. During operation, it positions the tool gripper with micron-level repeatability, enabling rapid tool changes without manual intervention.
Materials
AISI 4140 alloy steel (hardened to 45-50 HRC) or aluminum 7075-T6 for lightweight applications. Surface treatment: Hard chrome plating (0.003-0.005" thickness) or nickel plating for corrosion resistance.
Technical Parameters
ParameterTypical rangeNotes & selection driver
IP RatingIP54 minimum
Maximum Speed2.5 m/s
Repeatability±0.002 mm
Weight CapacityUp to 25 kg
Natural Frequency>120 Hz
Positioning Accuracy±0.005 mm
Operating Temperature0-50°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 9409-1, ISO 10791-7, DIN 69893

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Fatigue cracking at stress concentration points
  • Thermal expansion affecting accuracy
  • Corrosion in humid environments
  • Bearing wear leading to positional drift
FMEA Triads
Trigger: Insufficient lubrication
Failure: Increased friction and premature bearing wear
Mitigation: Implement automatic lubrication systems with flow monitoring
Trigger: Vibration from unbalanced tools
Failure: Resonance leading to structural fatigue
Mitigation: Add vibration dampers and implement tool balancing verification
Trigger: Thermal gradients
Failure: Dimensional instability during extended operation
Mitigation: Use materials with low thermal expansion and incorporate temperature compensation algorithms

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 2768-mK, positional accuracy within 0.01mm over full travel
Test Method
Laser interferometer measurement for positional accuracy, modal analysis for vibration characteristics, load testing at 150% rated capacity

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Arm Body

Manufacturer profiles associated with Arm Body.

Sourcing Arm Body from China?
Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.
Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Related Components

Mounting Interface
Precision mounting interface connecting punch tips to pharmaceutical tablet press machines for accurate tablet production.
Chrome Plating
Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.
Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Frequently Asked Questions

What maintenance does the Arm Body require?

Regular inspection of mounting bolts (torque check every 500 hours), lubrication of bearing surfaces every 2000 hours, and alignment verification using laser measurement tools quarterly.

Can Arm Bodies be customized for different machines?

Yes, manufacturers typically offer custom mounting interfaces, lengths, and weight capacities to match specific CNC machine configurations and tool magazine layouts.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Request Manufacturing Insight for Arm Body

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.
Yoke Bracket
Get QuotesChat