Wheeled Excavator
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This page explains how Upper structure is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
The rotating platform assembly of a wheeled excavator that houses the operator's cab, engine, hydraulic systems, and boom attachment.
Technical details and manufacturing context for Upper structure
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Swing Torque | 50–120 kN·m | Determines excavator rotation capability |
| Swing Speed | 8–12 r/min | Affects cycle time |
| Hydraulic Flow Rate | 120–240 L/min | Determines actuator speed |
| Boom Lifting Capacity | 3–8 t | Maximum load at full reach |
| Cab Noise Level | 70–80 dB(A) | Operator comfortISO 6395 |
| Operating Temperature Range | -20–50 °C | Outside range may affect hydraulics |
| Ingress Protection Rating | IP54–IP65 | Protection against dust and waterIEC 60529 |
| Material Grade | Q345B–Q460C | High-strength steel for durabilityGB/T 1591 |
| Total Weight | 3–8 t | Affects transport and stability |
| Swing Bearing Diameter | 800–1200 mm | Determines load capacityISO 122 |
| Engine Power | 100–200 kW | Drives hydraulic systemsISO 9249 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Upper structure.
This component is essential for the following industrial systems and equipment:
| pressure: | Hydraulic system: up to 350 bar (5076 psi), structural: designed for dynamic loads up to 1.5x rated capacity |
| other spec: | Rotation speed: 0-10 rpm continuous, 15 rpm peak; Flow rate: 100-400 L/min hydraulic system; Slurry concentration: N/A (not applicable for this assembly) |
| temperature: | -20°C to +50°C (operational), -40°C to +70°C (storage) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
Manufacturer profiles associated with Upper structure.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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The upper structure is the rotating platform that houses the operator's cab, engine, hydraulic systems, and boom attachment. It rotates 360 degrees on the undercarriage, enabling the excavator to dig, lift, and place materials in any direction without moving the machine.
The upper structure is typically made from high-strength steel, cast steel, or alloy steel. Material grades such as Q345B to Q460C per GB/T 1591 are referenced, but the actual grade must be confirmed with the manufacturer for the specific model.
Key parameters include swing torque (50–120 kN·m), swing speed (8–12 r/min), operating pressure (1.0–1.6 MPa), hydraulic flow rate (120–240 L/min), boom lifting capacity (3–8 t), and engine power (100–200 kW). These are reference ranges and must be verified for the intended application.
Regular maintenance includes checking for hydraulic leaks, unusual noise from the slewing ring, and ensuring the operating temperature stays within -20 to 50 °C. Also verify that the ingress protection rating (IP54–IP65) is maintained to prevent dust and water damage. Always follow the manufacturer's maintenance schedule.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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