Jib Connection Bracket: Weight Range 15-150 kg

Component Specifications

Definition

The Jib Connection Bracket is a critical structural component in mast/column-based lifting equipment that serves as the interface between the jib (horizontal or inclined boom) and the vertical mast or column. It is engineered to withstand complex loading conditions including vertical loads, bending moments, and torsional forces while maintaining precise alignment. This component ensures proper load path transfer from the jib to the mast structure and provides the necessary rigidity to prevent deflection during operation.

Working Principle

The bracket functions as a mechanical interface that transfers loads from the jib to the mast through bolted or welded connections. It distributes stress concentrations across multiple attachment points, maintains geometric alignment between components, and provides structural continuity. The design incorporates features to accommodate thermal expansion, vibration damping, and fatigue resistance through optimized geometry and material selection.

Materials

High-strength low-alloy steel (HSLA) grades such as ASTM A572 Grade 50 or equivalent, with yield strength ≥345 MPa. Alternative materials include forged steel alloys for high-load applications or aluminum alloys for weight-sensitive applications where corrosion resistance is prioritized.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight Range	15-150 kg
Load Capacity	5-50 tons (depending on application)
Mounting Holes	ISO metric thread or SAE standard
Connection Type	Bolted or welded
Surface Treatment	Hot-dip galvanized or powder coated
Operating Temperature	-20°C to +80°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 4301, DIN 15018, ISO 12100, EN 13001

Parent Products

This component is used in the following industrial products

Mast/Column

The vertical structural support component of a jib crane that provides stability and load-bearing capacity.

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Engineering Analysis

Risks & Mitigation

Fatigue failure from cyclic loading
Corrosion in harsh environments
Improper installation leading to misalignment
Overloading beyond rated capacity
Bolt loosening from vibration

FMEA Triads

Trigger: Fatigue cracking from cyclic stress concentrations
Failure: Crack propagation leading to structural failure
Mitigation: Regular NDT inspections, proper material selection with adequate fatigue strength, design optimization to reduce stress concentrations

Trigger: Corrosion in marine or chemical environments
Failure: Reduced cross-sectional area and strength degradation
Mitigation: Appropriate corrosion-resistant coatings, material selection (stainless steel or aluminum alloys for corrosive environments), regular maintenance

Trigger: Improper bolt torque during installation
Failure: Connection loosening leading to excessive movement and accelerated wear
Mitigation: Use of calibrated torque wrenches, proper bolt tightening sequences, regular torque checks during maintenance

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm for mounting hole positions, ±1° for angular alignment, surface flatness within 0.2 mm per 100 mm

Test Method

Static load testing at 125% of rated capacity, fatigue testing per ISO 8686, non-destructive testing (magnetic particle or dye penetrant), dimensional verification with 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

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Manufacturers of Jib Connection Bracket

Manufacturer profiles associated with Jib Connection Bracket.

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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 Jib Connection Bracket?

The primary function is to securely connect the jib to the mast/column while transferring operational loads (including lifting loads, dynamic forces, and environmental loads) between these structural elements with minimal deflection and stress concentration.

How often should Jib Connection Brackets be inspected?

Visual inspections should be conducted daily before operation, with detailed inspections including non-destructive testing (NDT) every 6-12 months depending on usage intensity, as per ISO 9927-1 standards for crane inspection.

Can Jib Connection Brackets be repaired if damaged?

Minor surface damage can be repaired following manufacturer specifications, but structural damage typically requires replacement. Any repair must be approved by a qualified engineer and comply with original design specifications.

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.

Jib Connection Bracket