Handle Body: Surface Finish Ra ≤ 3.2 μm

Component Specifications

Definition

The handle body is a critical structural component of the dipper handle assembly in excavators, designed to provide secure attachment points for hydraulic cylinders, linkage mechanisms, and operator controls. It serves as the main load-bearing element that transfers operational forces between the dipper stick and bucket while maintaining precise alignment and stability during digging, lifting, and material handling operations.

Working Principle

Functions as a rigid structural member that distributes mechanical loads from hydraulic actuators and external forces through optimized geometry and material properties. It maintains dimensional stability under cyclic loading conditions while providing mounting interfaces for control linkages and hydraulic connections.

Materials

High-strength low-alloy steel (HSLA) ASTM A572 Grade 50 or equivalent, with yield strength ≥ 345 MPa, tensile strength ≥ 450 MPa, and Charpy V-notch impact toughness ≥ 27 J at -20°C. Surface treatment: Hot-dip galvanizing or epoxy coating for corrosion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	15-45 kg depending on excavator size
Dimensions	Length: 800-1500 mm, Width: 150-300 mm, Height: 200-400 mm
Load Capacity	Static: 50-150 kN, Dynamic: 30-100 kN
Mounting Holes	ISO 286-2 H7 tolerance
Surface Finish	Ra ≤ 3.2 μm

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 286-2, DIN 7172, ISO 5817, ASTM A572

Parent Products

This component is used in the following industrial products

Dipper Handle

The structural arm that connects the dipper to the boom and controls its movement in an electric rope shovel.

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Engineering Analysis

Risks & Mitigation

Fatigue failure from cyclic loading
Corrosion in harsh environments
Dimensional wear affecting alignment
Overload causing permanent deformation

FMEA Triads

Trigger: Material fatigue from repeated stress cycles
Failure: Crack propagation leading to structural failure
Mitigation: Regular inspection for surface cracks, proper material selection with adequate fatigue strength, stress relief treatments

Trigger: Corrosive environment exposure
Failure: Reduced cross-sectional area and strength degradation
Mitigation: Protective coatings, regular maintenance, material selection with corrosion resistance

Trigger: Improper installation or alignment
Failure: Premature wear and reduced operational efficiency
Mitigation: Precision manufacturing tolerances, proper installation procedures, alignment verification tools

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286-2, welding standards per ISO 5817

Test Method

Non-destructive testing (magnetic particle, ultrasonic), load testing per ISO 7500-1, material certification per ASTM A572

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Handle Body

Manufacturer profiles associated with Handle Body.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of a handle body in excavator dipper handles?

The handle body serves as the main structural component that transfers operational forces between hydraulic systems and the bucket while maintaining alignment and stability during digging operations.

What materials are typically used for manufacturing handle bodies?

High-strength low-alloy steel (HSLA) with minimum yield strength of 345 MPa, often with corrosion-resistant coatings like hot-dip galvanizing or epoxy finishes.

How do I determine compatibility with different excavator models?

Check mounting hole patterns, dimensional specifications, load ratings, and hydraulic connection interfaces against OEM specifications for your specific excavator model and dipper handle configuration.

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.

Handle Body