Boom Tip (Head): Weight Range 50-500 kg, Pin Diameter 80-150 mm

Component Specifications

Definition

The boom tip, also known as the boom head, is the structural termination point of a main boom assembly in construction and mining equipment such as excavators, cranes, and backhoes. This component serves as the interface between the boom and various working attachments (buckets, grapples, hooks), transferring hydraulic forces and mechanical loads while providing precise articulation control. It incorporates mounting points, hydraulic cylinder connections, and wear-resistant surfaces to withstand extreme operational stresses.

Working Principle

The boom tip functions as a mechanical pivot and force transfer point. It connects to the boom's main structure through welded or bolted joints and provides attachment interfaces for hydraulic cylinders that control attachment movement. During operation, hydraulic pressure actuates cylinders connected to the tip, creating rotational moments that position attachments. The tip's geometry determines the working envelope and leverage ratios, while its material composition and design distribute stresses to prevent fatigue failure.

Materials

High-strength low-alloy steel (HSLA) ASTM A572 Grade 50 or equivalent, with yield strength ≥345 MPa and Charpy V-notch impact resistance at -20°C. Critical wear surfaces may have welded hardfacing (e.g., chromium carbide overlay) or replaceable wear plates. Heat treatment to achieve Brinell hardness 300-400 HB in high-stress zones.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bearing Type	Bronze bushings or roller bearings
Pin Diameter	80-150 mm
Weight Range	50-500 kg
Working Pressure	Up to 35 MPa
Attachment Compatibility	ISO 13031 quick coupler systems

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 13031, DIN 15400, ISO 10533

Parent Products

This component is used in the following industrial products

Main Boom

The primary load-bearing structural arm of a crawler crane that extends to position and lift loads.

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Engineering Analysis

Risks & Mitigation

Fatigue cracking at stress concentration points
Bearing surface wear leading to slop
Corrosion in pin bore areas
Overload deformation

FMEA Triads

Trigger: Cyclic loading exceeding material endurance limit
Failure: Fatigue cracks propagating from pin holes
Mitigation: Implement regular NDT inspections, use shot peening to induce compressive surface stresses, and maintain proper lubrication

Trigger: Abrasive wear from contaminated pin interfaces
Failure: Excessive clearance causing attachment instability
Mitigation: Install wear sleeves, use sealed bearing systems, and establish regular maintenance schedules

Trigger: Overload during operation
Failure: Plastic deformation of tip structure
Mitigation: Install load monitoring systems, train operators on capacity limits, and design with appropriate safety factors

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Pin bore diameter: H8 tolerance, center distance: ±0.5 mm, parallelism: 0.1 mm per 100 mm

Test Method

Ultrasonic testing per ISO 17640, magnetic particle inspection per ISO 9934, dimensional verification with coordinate measuring machines

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

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Manufacturers of Boom Tip (Head)

Manufacturer profiles associated with Boom Tip (Head).

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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 boom tip?

The boom tip serves as the connection point between the main boom and working attachments, transferring hydraulic and mechanical forces while enabling precise control of attachment positioning.

How often should boom tips be inspected?

Boom tips require visual inspection every 50 operating hours and detailed dimensional inspection every 500 hours, with particular attention to pin holes, cracks, and wear surfaces.

Can boom tips be repaired or must they be replaced?

Minor wear can be addressed through hardfacing and machining, but cracked or severely deformed tips typically require replacement due to structural integrity concerns.

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.

Boom Tip (Head)