Crane Rail Wheels&Crane traveling wheels

Product Name: Crane Wheel Set

Material: Cast steel/forged steel

Applications: Gantry cranes, port machinery, bridge cranes, and mining machinery

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Overview

Features

Parameter

Overview

Crane rail wheels are a crucial core component in rail-mounted cranes such as bridge cranes and gantry cranes. They directly affect the crane's operational performance, safety, and lifespan.

To provide a comprehensive answer, I will introduce them from several aspects:

Crane rail wheels are typically called differently based on their function and installation location:

Crane Traveling Wheels: The most common name, referring to the wheels that drive the crane or trolley to run on the track.

Crane Driving Wheels: Wheels connected to the drive mechanism (such as a motor or reducer) that provide power.

Crane Driven Wheels: Wheels without power, serving only a supporting and guiding function.

Crane Angle Wheels/Crane Horizontal Wheels:Usually installed on the outriggers of gantry cranes to prevent "rail biting" or derailment in curves or under crosswinds, providing lateral guidance.

Features

As a leading enterprise in China's crane industry, Weihua Group's crane rail wheels (commonly known as "crane wheel sets" or "crane traveling wheels") possess significant advantages within the industry.

Weihua boasts strong independent R&D and manufacturing capabilities in this field, and the advantages of its products can be summarized in the following aspects:

Advanced Materials and Heat Treatment Processes:

Superior Materials: Weihua crane wheels are made of high-strength alloy forged steel (such as 42CrMo), ensuring the wheels' toughness, fatigue resistance, and load-bearing capacity from the source. Exclusive Heat Treatment Technology: Weihua possesses mature and precise deep induction hardening or integral hardening technology. This ensures that the wheel tread and rim achieve high hardness (typically HRC≥50-55), while guaranteeing sufficient depth of the hardened layer, and maintaining the toughness of the wheel core. This makes the wheels extremely wear-resistant, with a lifespan far exceeding ordinary products, and effectively prevents surface peeling and cracking.

Extended service life

Thanks to its excellent wear resistance, Weihua wheels have a significantly longer replacement cycle under the same working conditions, greatly reducing users' maintenance costs and downtime.

High load capacity and high reliability

Weihua crane wheel product series covers all working classes (A1-A8), capable of meeting various working conditions from light to extra-heavy and from low to high speed. The allowable wheel pressure design provides sufficient safety margin, ensuring stable and reliable operation.

Comprehensive After-Sales and Technical Support

WEIHUA Group can provide complete solutions from selection, installation, commissioning to fault diagnosis. If problems such as rail wear occur, Weihua's technicians can conduct systematic analysis and adjustments from the crane wheels and rails to the crane bridge structure—an advantage that companies that simply sell parts cannot match.

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Parameter

Parameter Category	Parameter Range	Description
Wheel diameter (D)	Φ160mm ~ Φ1000mm	Common specifications: Φ250mm, Φ400mm, Φ630mm, Φ800mm
Tread width (B)	80mm ~ 200mm	Must match the rail head width (e.g., QU80 track corresponds to a wheel width of approximately 100mm).
Rim height (h)	20mm ~ 50mm	Double flange (universal), single flange (low lateral force), flangeless (requires guides).
Material	Cast steel (ZG340-640), forged steel 42CrMo、65Mn	Cast steel is economical and durable, while alloy steel offers high load-bearing properties.
Heat treatment hardness	Wheel surface hardness: HB300~380 or HRC45~55	Surface hardening improves wear resistance.
Single wheel load rating	5t ~ 500t	Allocation depends on the total crane weight and number of wheels (e.g., a four-wheel crane with a total load of 100t has a single wheel load of approximately 25t).
Maximum wheel pressure (P)	50kN ~ 800kN	Must match the track's load-bearing capacity (e.g., QU100 track allows for a wheel load of approximately 300kN).

Crane Rail Wheels Common Problems and Maintenance

Wear:

Tread Wear: Uniform wear under normal operation.

Flange Wear: Especially abnormal wear on one side, usually a sign of "rail biting," requiring adjustment.

Rail Biting: Severe friction between the wheel flange and the side of the rail during crane operation. This is one of the most common problems, causing rapid wear of the flange and rail, increasing running resistance. Causes include:

Rail installation errors (elevation, straightness, gauge)

Wheel installation errors (horizontal skew, vertical skew, diagonal error)

Drive asynchrony

Frame deformation

Peeling and Chipping: Pitting, flaking, or flange chipping on the tread. Causes may include improper heat treatment, material problems, or overload impact.

Crane Rail Wheels Maintenance Tips:

Regular Inspection: Check for wear (especially flange thickness), cracks, and peeling.

Lubrication: Ensure proper lubrication of bearings.

Rail Cleaning: Keep the rails clean, free of weld slag, gravel, and other hard objects.

Measurement and Adjustment: Regularly check the parallelism, straightness, and wheel skew of the rails, and correct them promptly.

Crane Rail Wheels Selection and Replacement Recommendations:

Prioritize Original Design: When replacing wheels, it is best to use products of the same model and specifications.

Choose Reliable Manufacturers: Wheels are safety components; choose qualified manufacturers with mature processes (especially heat treatment processes).

Replace in Pairs: On the same vehicle or side, it is recommended to replace all wheels simultaneously or at least in pairs (e.g., both drive wheels) to ensure consistent diameter and avoid asynchronous operation.

Match Rail Condition: If the rails are also severely worn, simply replacing the wheels will accelerate their wear; consider repairing or replacing the rails simultaneously.

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