Tire Assembly for Straddle Carriers | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Tire Assembly

Definition

The tire assembly is a critical component of a straddle carrier's undercarriage system, consisting of the pneumatic tire, wheel rim, valve stem, and necessary fasteners. It provides the interface between the vehicle and ground surface, supporting the carrier's massive load capacity while enabling mobility across container yards and port facilities. The assembly is engineered for heavy-duty applications, with a standard tire size of 18.00-25 inches (ISO 4251-1) and a load capacity ranging from 25,000 to 40,000 kg per wheel (ISO 10571). Maximum speed for yard operations is 25-40 km/h, and the operating temperature range is -20°C to 50°C, outside which tire performance degrades. The tire ply rating ranges from 36 to 48 PR (ISO 4251-1), with higher PR ratings for heavier loads. Rim width must match the tire bead width, typically 17.00-20.00 inches (ISO 4250-3), and the bolt circle diameter ranges from 335 to 425 mm (ISO 4107) to ensure hub compatibility. The overall diameter affects ground clearance and gearing, ranging from 1600 to 1800 mm, and the complete assembly weighs between 800 and 1200 kg. Materials include rubber compound, steel alloy, and synthetic fibers. These specifications serve as reference ranges; actual values must be verified with the legal manufacturer or supplier for the specific model and application.

Working Principle

The assembly transfers the straddle carrier's weight and operational loads to the ground through the inflated tire, which deforms under pressure to create a contact patch. This distributes forces evenly while providing traction, shock absorption, and steering capability through the wheel's rotational movement. The tire's inflation pressure is critical: too low a pressure reduces load capacity and increases heat buildup, while too high a pressure reduces traction and ride comfort. The rim and mounting hardware secure the tire to the hub, ensuring proper alignment and torque. The assembly's design must accommodate the carrier's load, speed, and operating environment, with parameters such as ply rating and rim width selected accordingly. Regular inspection of tire pressure, tread depth, and rim condition is essential to maintain safe operation and prevent premature failure.

Common Materials

Rubber compound, Steel alloy, Synthetic fibers

Technical Parameters

Parameter	Typical range	Notes & selection driver
Tire Size	18.00-25 inch	Standard size for straddle carriersISO 4251-1
Load Capacity	25000–40000 kg	Per wheel, depends on tire sizeISO 10571
Max Speed	25–40 km/h	For yard operations
Operating Temperature	-20–50 °C	Outside range, tire performance degrades
Tire Ply Rating	36–48 PR	Higher PR for heavier loadsISO 4251-1
Rim Width	17.00–20.00 inch	Must match tire bead widthISO 4250-3
Bolt Circle Diameter	335–425 mm	Ensures hub compatibilityISO 4107
Overall Diameter	1600–1800 mm	Affects ground clearance and gearing
Weight	800–1200 kg	Includes tire and rim assembly

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Tire Part
Provides traction, load support, and shock absorption through pneumatic inflation

Material: Rubber compound with steel belts
Wheel Rim Part
Structural component that supports the tire and connects to the axle hub

Material: Steel alloy
Valve Stem Part
Allows inflation and pressure monitoring of the tire

Material: Rubber and metal
Mounting Hardware Part
Bolts, nuts, and washers that secure the assembly to the axle

Material: High-strength steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tire Assembly.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Straddle Carrier

View system integration details

Manufacturers of Tire Assembly

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Mech-Mind

Beijing, CN

Also makes: Wheel Assembly

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the standard tire size for a straddle carrier tire assembly?

The standard tire size is 18.00-25 inches, as referenced in ISO 4251-1. However, always confirm the exact size for your specific straddle carrier model with the manufacturer or supplier.

What load capacity can a typical tire assembly support?

The load capacity ranges from 25,000 to 40,000 kg per wheel, depending on tire size and application, as per ISO 10571. Verify the rated load for your specific configuration.

How do I ensure the rim and mounting hardware are compatible?

The rim width must match the tire bead width, typically 17.00-20.00 inches (ISO 4250-3), and the bolt circle diameter should be 335-425 mm (ISO 4107) to ensure hub compatibility. Check these dimensions against your hub specifications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Max 150 psi (10.3 bar)
other spec:	Max load capacity: 25,000 kg per wheel, Speed rating: Up to 30 km/h
temperature:	-40°C to +85°C

Tire Assembly

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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