Hydraulic or Electromechanical Actuator
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This page explains how Piston & Rod 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.
A critical assembly within hydraulic or electromechanical actuators that converts fluid pressure or electrical energy into linear mechanical motion.
Technical details and manufacturing context for Piston & Rod
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Bore Diameter | 40–200 mm | Determines force output; larger bore for higher force.ISO 6020-2 |
| Rod Diameter | 20–100 mm | Affects buckling strength and compression load capacity.ISO 6195 |
| Stroke Length | 100–2000 mm | Custom lengths available; longer strokes require guiding. |
| Operating Pressure | 10–21 MPa | Exceeding max pressure may cause seal failure. |
| Operating Temperature | -20–80 °C | Seals and materials limit range; high temp reduces life. |
| Surface Roughness (Rod) | 0.2–0.4 µm Ra | Critical for seal life and friction.ISO 1302 |
| Straightness Tolerance | 0.05–0.10 mm/m | Ensures smooth operation and prevents binding.ISO 1101 |
| Cylindricity Tolerance | 0.02–0.05 mm | Maintains uniform clearance for sealing.ISO 1101 |
| Hardness (Rod Surface) | HRC 50–60 HRC | High hardness improves wear resistance.ISO 18265 |
| Material Grade (Rod) | 45# or 40Cr | Chrome-plated for corrosion resistance.GB/T 699, GB/T 3077 |
| Chrome Plating Thickness | 20–50 µm | Thicker coating for harsh environments.ISO 6158 |
| Weight | 5–150 kg | Depends on bore, stroke, and material. |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 300 bar (hydraulic), 1000 bar (high-pressure variants) |
| other spec: | Flow rate: 5-200 L/min (hydraulic), Velocity: 0.01-1.5 m/s, Slurry concentration: <5% solids by volume |
| temperature: | -40°C to +120°C (standard), up to +200°C with specialized seals |
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.
3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
Common materials include chrome-plated steel, stainless steel, aluminum alloy, and carbon steel. The rod may be made of 45# or 40Cr steel with chrome plating. Material selection depends on the application environment and required strength and corrosion resistance.
The reference operating pressure range is 10–21 MPa. Exceeding this range may cause seal failure. Always verify the maximum pressure rating for the specific model with the manufacturer.
Bore diameter determines the force output; a larger bore provides higher force for a given pressure. The reference range is 40–200 mm, per ISO 6020-2. The actual required bore depends on the application's force requirements.
Surface roughness of the rod affects seal life and friction. The reference range is 0.2–0.4 µm Ra, per ISO 1302. A smoother surface reduces friction and extends seal life, but the optimal value depends on the seal type and operating conditions.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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