INDUSTRY COMPONENT

Side Plates / Housing

Structural housing plates for jib tip sheave assemblies in lifting equipment

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Component Specifications

Definition
Side plates or housing components are structural elements that form the protective enclosure and mounting framework for sheave assemblies at the jib tip of cranes and lifting equipment. These plates provide rigid support for sheave axles, contain the sheave assembly within a defined operational envelope, and protect internal components from environmental exposure while maintaining precise alignment for cable routing.
Working Principle
The side plates function as a rigid structural housing that maintains precise geometric alignment of sheave axles through bolted or welded connections. They distribute operational loads (cable tension, dynamic forces) across the jib structure while containing the sheave assembly to prevent cable disengagement and protect against external contaminants.
Materials
High-strength structural steel (ASTM A36, A572 Grade 50) or alloy steel (ASTM A514) with corrosion-resistant coatings (hot-dip galvanizing, epoxy paint systems). Thickness typically 6-25mm depending on load capacity requirements.
Technical Parameters
  • Material Grade ASTM A572 Grade 50
  • Plate Thickness 8-20mm
  • Weight Capacity 5-50 tons
  • Surface Treatment Hot-dip galvanized
  • Mounting Hole Pattern ISO metric thread
  • Operating Temperature -20°C to +80°C
Standards
ISO 4301, DIN 15018, ISO 12488

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Side Plates / Housing.

sheave housing plates jib tip components crane side plates lifting equipment housing structural sheave enclosure Side Plates / Housing Side Plates / Housing in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Jib Tip Sheave Assembly

A pulley assembly mounted at the tip of a luffing jib for guiding and supporting hoist ropes or cables.

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Engineering Analysis

Risks & Mitigation
  • Fatigue cracking at stress concentration points
  • Corrosion in marine environments
  • Bolt loosening due to vibration
  • Misalignment causing accelerated wear
FMEA Triads
Trigger: Inadequate material thickness for applied loads
Failure: Plate deformation or cracking
Mitigation: Implement finite element analysis during design, use higher grade materials, add reinforcement ribs
Trigger: Improper corrosion protection
Failure: Reduced structural integrity over time
Mitigation: Specify appropriate coating systems for operating environment, implement regular inspection protocols
Trigger: Vibration-induced bolt loosening
Failure: Loss of alignment and increased wear
Mitigation: Use locking fasteners, implement regular torque checks, add vibration-damping elements

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5mm for mounting hole positions, ±1° for angular alignment
Test Method
Non-destructive testing (magnetic particle, ultrasonic), load testing per ISO 4301, coating thickness measurement

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of side plates in a jib tip sheave assembly?

The primary function is to provide rigid structural support for sheave axles while containing the sheave assembly to maintain cable alignment and protect against environmental factors.

How are side plates typically mounted to the jib structure?

Side plates are typically mounted using high-strength bolts through precision-drilled holes that align with the jib structure, often with welded reinforcements for heavy-duty applications.

What corrosion protection methods are used for these components?

Common protection includes hot-dip galvanizing, epoxy coating systems, or specialized paint formulations designed for industrial environments with exposure to moisture and chemicals.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

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