Mini Excavator
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This page explains how Hydraulic Arm (Boom and Stick) 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 primary hydraulic-powered structural assembly of a mini excavator responsible for digging, lifting, and material handling.
Technical details and manufacturing context for Hydraulic Arm (Boom and Stick)
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Boom Length | 2.5–4.5 m | Determines reach and digging depth |
| Stick Length | 1.5–2.5 m | Affects digging force and depth |
| Boom Swing Angle | 50–90 ° | Larger angle improves maneuverability |
| Bucket Digging Force | 20–50 kN | Critical for digging in hard soil |
| Arm Digging Force | 15–35 kN | Important for prying and lifting |
| Operating Temperature Range | -20–60 °C | Outside this range, seals may fail |
| Material Grade | Q345B | High-strength steel for durabilityGB/T 1591 |
| Weight | 300–800 kg | Affects machine stability and transport |
| Pin Diameter | 40–80 mm | Determines joint strength and wear life |
| Cylinder Stroke | 500–1200 mm | Defines range of motion |
| Cylinder Bore Diameter | 60–120 mm | Affects force output |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | Max 350 bar (5076 psi) |
| flow rate: | 20-120 L/min (5.3-31.7 GPM) |
| temperature: | -20°C to 80°C |
| slurry concentration: | Max 15% solids by weight |
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.
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The hydraulic arm, consisting of the boom and stick, is the primary structural assembly that enables digging, lifting, and material handling. It translates hydraulic power into controlled motion to position the attachment (e.g., bucket) for excavation tasks.
The arm is commonly made from high-strength steel grades such as Q345B or Q550D, with hardened steel pins and bushings at the joints. These materials provide durability and resistance to wear under heavy loads.
Key parameters include operating pressure, boom and stick lengths, swing angle, digging forces, operating temperature range, material grade, weight, pin diameter, and cylinder dimensions. These values must be verified for the specific model and application.
Regular inspection of hydraulic cylinders, pins, and bushings is recommended. Watch for signs of wear such as unusual noises, reduced digging force, or hydraulic fluid leaks. Always follow the manufacturer's maintenance guidelines and verify replacement parts with the supplier.
This component is essential for the following industrial systems and equipment:
Commonly used trade names and technical identifiers for Hydraulic Arm (Boom and Stick).
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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