Arm Bracket: Load Capacity 500-5000 N, Weight 2.5-15 kg

Component Specifications

Definition

The arm bracket is a critical structural component within dancer arm assemblies used in web handling and tension control systems. It serves as the primary mounting interface between the dancer arm and the machine frame, providing precise alignment and stability for tension rollers. This component must withstand dynamic loads, vibrations, and cyclical stresses while maintaining dimensional accuracy to ensure consistent web tension across various industrial processes.

Working Principle

The arm bracket functions as a rigid lever support that transfers forces from the dancer roller to the tension sensing mechanism. It operates on mechanical leverage principles, where displacement of the dancer arm creates proportional movement that is measured and controlled. The bracket's geometry determines the mechanical advantage and response characteristics of the tension control system.

Materials

Typically manufactured from high-strength steel alloys (AISI 4140, 4340) or aluminum alloys (6061-T6, 7075-T6) depending on load requirements. Surface treatments include zinc plating, powder coating, or anodizing for corrosion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	2.5-15 kg
Hardness	HRC 28-45 (steel), HB 80-150 (aluminum)
Dimensions	Custom per application
Load Capacity	500-5000 N
Mounting Holes	ISO metric thread (M8-M16)
Surface Finish	Ra 3.2 μm or better
Flatness Tolerance	0.1 mm/100 mm

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 2768, DIN 7168

Parent Products

This component is used in the following industrial products

Dancer Arm Assembly

A mechanical assembly that supports and positions the dancer roll in fabric tension control systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Fatigue failure under cyclic loading
Corrosion in humid environments
Misalignment causing uneven wear
Vibration-induced loosening of fasteners

FMEA Triads

Trigger: Material fatigue from cyclic loading
Failure: Crack propagation leading to structural failure
Mitigation: Implement regular NDT inspections, use fatigue-resistant materials, design with appropriate safety factors

Trigger: Improper installation or alignment
Failure: Premature wear and inaccurate tension control
Mitigation: Use precision alignment tools during installation, implement standardized installation procedures, include alignment verification steps

Trigger: Corrosive environment exposure
Failure: Material degradation and loss of structural integrity
Mitigation: Apply appropriate protective coatings, select corrosion-resistant materials, implement environmental controls

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 2768-m

Test Method

Static load testing per ASTM E8, fatigue testing per ASTM E466, dimensional verification using CMM

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 Bracket

Manufacturer profiles associated with Arm Bracket.

Sourcing Arm Bracket 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 is the primary function of an arm bracket in dancer arm assemblies?

The arm bracket provides structural support and precise mounting for tension control systems, ensuring accurate force transfer and alignment in web handling applications.

How do I select the right material for an arm bracket?

Material selection depends on load requirements, weight constraints, and environmental conditions. Steel alloys offer higher strength for heavy loads, while aluminum provides weight reduction for high-speed applications.

What maintenance is required for arm brackets?

Regular inspection for cracks, wear at mounting points, and corrosion. Lubrication of pivot points and periodic torque verification of fasteners are recommended maintenance procedures.

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.

Arm Bracket