Side Plates / Housing: Weight Capacity 5-50 tons

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

Parameter	Typical range	Notes & selection driver
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

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 12488

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.

View Product Details

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

Typical Suppliers & Equivalents

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

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 Side Plates / Housing

Manufacturer profiles associated with Side Plates / Housing.

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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 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.

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.

Side Plates / Housing