Single Flange Crane Wheel
Product Overview
Single-flange Crane Wheel is a core load-bearing and guiding component of crane travel systems. This wheel series features a single flange on one side with a typical height of 20–25 mm. The flange provides lateral restraint and anti-derailment capability through a controlled clearance fit with the rail edge while preserving better lateral flexibility to accommodate minor track deviations and dynamic load adjustments.
These wheels are widely used for trolley travel mechanisms on tower cranes (running along the lower flange of I-beams), bridge/girder crane trolleys (commonly under 50 t), and specialized conditions requiring wear resistance, high-temperature tolerance, or explosion-proof properties. Wheel bodies are commonly integrated with axle and bearing housings into a travel wheel assembly. Materials and heat-treatment can be customized — options include cast steel, alloy steel, forged steel, and ductile iron.
Major Components
Wheel body (tread & flange): The load-bearing element in direct contact with the rail. Tread may be cylindrical or crowned; flange located on one side facing outward from the rail.
Axle & drive components: Typically machined from 45 steel or specified material; connection via key or flange; optional axle sleeve for shock buffering.
Support system (bearing housing): Typically fitted with tapered roller bearings or spherical roller bearings depending on radial/axial load and start-stop frequency.
Integrated housing: Cast-steel or welded box structure that integrates mounting features and maintains assembly rigidity.
Key Advantages
Balanced guidance and lateral adaptability: With proper rail fit and installation, the single flange provides reliable lateral limiting while imposing less lateral stiffness compared to double-flange wheels. This reduces the risk of binding when the track exhibits minor misalignment.
Application-tailored material options: Materials available include ZG cast steels, 42CrMo alloy steel, 35CrMnSi forged steel, QT-series ductile iron, and hardened cast irons; heat treatment and surface protection can be specified to match temperature, load and corrosive environments.
Durable tread through surface hardening: Induction hardening or surface quenching is supported. Typical target surface hardness is HB300–380, with a case depth commonly specified as ≥15–20 mm (actual values vary by diameter and material and will be provided in the final inspection report).
Standardized yet customizable: Diameter coverage φ100–1250 mm (tolerance class h9) supports both standardized mass production and non-standard customization.
Documented quality control: Each wheel is delivered with chemical analysis, hardness-depth profile, case depth measurement, NDT records (MT/UT/RT as applicable), and dimensional inspection certificates to enable purchaser verification and maintenance planning.
Typical Specifications
The table below shows common sizes for reference. Final ordering parameters shall follow contract drawings and product data sheets.
Customization Services
Customizable Dimensions & Features
Materials: cast steel / 42CrMo / 35CrMnSi / ductile iron / hardened cast iron, etc.
Sizes: Diameter φ100–1250 mm (tolerance h9), width 80–220 mm, flange height 15–30 mm.
Performance upgrades: Induction-hardened tread (surface hardness targets may reach HB330–380), corrosion protection (galvanizing, PTFE coatings), low-temperature modifications.
Accessories & interfaces: Bearing options (tapered / spherical), sealing types (labyrinth / contact seals), and mounting interfaces (keyway / flange).
Process options: Forging ratios, heat-treat options (isothermal normalization, quench-and-temper), and surface finish requirements (Ra3.2–Ra6.3).
Customization Workflow
Requirement submission: Customer provides operating conditions and mounting dimensions.
Design & proposal: Engineering evaluates mechanical, economic and environmental factors and issues CAD drawings and TDS for approval.
Prototype & testing: Small-batch sample production (7–15 days typical) with material tests and hardness reports; client may request field trials.
Production & delivery: Batch production with complete inspection documentation; lead times typically 15–30 days after sample approval (expedited options available by agreement).
FAQs
Q : What is a single-flange crane wheel and where is it used?
A: A single-flange crane wheel has a flange on only one side (typical height 20–25 mm). It provides lateral guidance and anti-derailment while allowing better lateral adaptation than double-flange wheels. Common applications: tower-crane trolleys (I-beam lower flange), bridge/gantry crane trolleys under ~50 t, and special-duty environments (high temp, anti-explosion, heavy wear).
Q:Do you provide custom sizes about single flange crane wheels?
A: Yes — diameter φ100–1250 mm (tolerance class h9) and widths 80–220 mm. Flange height, bore, keyway, and other interfaces can be customized.
Q8: What documentation is supplied with each wheel?
A: Standard package: material certificate/chemical report, hardness profile, case depth measurement, NDT report, dimensional inspection certificate, and any agreed test/field trial reports.