Lead Screw or Piston Rod for Adjustment Actuators

Product Specifications

Technical details and manufacturing context for Lead Screw or Piston Rod

Definition

In an adjustment actuator, the lead screw or piston rod serves as the primary force transmission element. The lead screw uses helical threads to translate rotational input from a motor into controlled linear movement, while the piston rod transmits force directly in hydraulic or pneumatic systems. Both provide the precise positioning capability essential for actuator adjustments. This component is available in alloy steel or stainless steel, with a nominal diameter ranging from 16 to 100 mm (ISO 2901) and a stroke length from 50 to 2000 mm. Lead accuracy is ±0.05 mm per 300 mm (ISO 3408-3). Maximum dynamic load is 5 to 50 kN, and maximum static load is 10 to 100 kN (ISO 3408-5). Operating temperature ranges from -20 to 80 °C. Surface hardness is 58 to 62 HRC (ISO 18265), and surface roughness is Ra 0.2 to 0.8 µm (ISO 1302). Material grades include 45#, 40Cr, and 42CrMo (GB/T 699, GB/T 3077). Thread types include trapezoidal (Tr), metric (M), and pipe (G) per ISO 2901, ISO 228-1, and ISO 68-1. Weight varies from 0.5 to 50 kg/m. These values are directory reference ranges; verify model-specific specifications with the manufacturer or supplier. The component is used in adjustment actuators for precise positioning in machinery. Selection requires confirming load, stroke, accuracy, and environmental compatibility. Maintenance includes checking for wear, lubrication, and alignment. Failure may occur if loads exceed rated values or temperature limits are exceeded.

Working Principle

For lead screws: rotational torque applied to the screw creates axial force through thread engagement, moving the nut linearly. For piston rods: hydraulic/pneumatic pressure acts on the piston, forcing the rod to extend or retract linearly. Both mechanisms provide controlled displacement for positioning applications.

Common Materials

Alloy Steel, Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	16–100 mm	Determines load capacity and compatibility with mating components.ISO 2901
Stroke Length	50–2000 mm	Custom lengths available; longer strokes may require additional support.
Lead Accuracy	±0.05 mm/300mm	Higher precision grades available for positioning applications.ISO 3408-3
Maximum Dynamic Load	5–50 kN	Exceeding this reduces service life.ISO 3408-5
Maximum Static Load	10–100 kN	Exceeding may cause permanent deformation.ISO 3408-5
Operating Temperature	-20–80 °C	Outside this range, lubricants and seals degrade.
Surface Hardness	58–62 HRC	Required for wear resistance on hardened steel.ISO 18265
Surface Roughness	Ra 0.2–0.8 µm	Smoother finish reduces friction and wear.ISO 1302
Material Grade	45# / 40Cr / 42CrMo	Alloy steels for higher strength.GB/T 699, GB/T 3077
Thread Type	Tr / G / M	Trapezoidal for power transmission, metric for general use.ISO 2901, ISO 228-1, ISO 68-1
Weight	0.5–50 kg/m	Varies with diameter 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.

Components / BOM

Threads Part
Helical grooves that convert rotational motion to linear motion

Material: Hardened Steel
End Fittings Part
Connection points for mounting to actuator components

Material: Steel Alloy
Nut
Rides the thread and carries the load; it is the part that actually travels.

Material: Bronze or polymer
Piston
The face the hydraulic or pneumatic pressure pushes on, on the piston-rod version.

Material: Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Adjustment Actuator

View system integration details

Lifter Actuator

View system integration details

Manufacturers of Lead Screw or Piston Rod

Manufacturer profiles associated with Lead Screw or Piston Rod.

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Frequently Asked Questions

What is the difference between a lead screw and a piston rod?

A lead screw converts rotary motion into linear motion via threads, while a piston rod transmits linear force directly from hydraulic or pneumatic pressure. Both are used in adjustment actuators for positioning.

What materials are available for this component?

The component is available in alloy steel or stainless steel. Material grades include 45#, 40Cr, and 42CrMo, per GB/T 699 and GB/T 3077. Verify the specific grade with the supplier.

What are the typical load ratings?

Maximum dynamic load is 5 to 50 kN, and maximum static load is 10 to 100 kN, per ISO 3408-5. These are reference ranges; confirm for your application.

What standards apply to this component?

Relevant standards include ISO 2901 for threads, ISO 3408-3 for lead accuracy, ISO 3408-5 for load ratings, ISO 18265 for hardness, and ISO 1302 for surface roughness. Always verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 300 bar (hydraulic), 10 bar (pneumatic) depending on diameter and material
other spec:	Max linear speed: 1.5 m/s, Positional accuracy: ±0.01 mm to ±0.1 mm, Lifecycle: 1M+ cycles with proper lubrication
temperature:	-20°C to +80°C

Lead Screw or Piston Rod

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards