Hydraulic or Electromechanical Actuator for Pinch Rolls

Product Specifications

Technical details and manufacturing context for Hydraulic or Electromechanical Actuator

Definition

A hydraulic or electromechanical actuator is a critical component within a pinch roll assembly that converts hydraulic pressure or electrical energy into precise mechanical motion. It controls the opening, closing, and pressure application of pinch rolls to grip, feed, or tension materials such as metal sheets, paper, textiles, or plastics during processing operations like rolling, coating, or slitting. The actuator is selected based on the required thrust, stroke length, operating speed, positioning accuracy, and environmental conditions. Typical rated thrust ranges from 5 to 200 kN, stroke length from 50 to 500 mm, and operating speed from 10 to 100 mm/s. Positioning accuracy is typically ±0.05 mm. For hydraulic versions, operating pressure is usually 1.0 to 1.6 MPa. Electromechanical versions typically operate on 24 V DC (±10%) and consume 0.5 to 5 kW depending on thrust and speed. Operating temperature range is -40 to 85 °C. Ingress protection is typically IP54 to IP65 per IEC 60529. Housing materials may include steel, aluminum alloy, or stainless steel (304/316L per ASTM A240) for corrosive environments. Seals are commonly made of NBR, FKM, or PTFE. Weight ranges from 50 to 500 kg. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

Hydraulic actuators use pressurized fluid, typically oil, in a cylinder to move a piston, generating linear force. Electromechanical actuators use an electric motor coupled with a mechanical transmission, such as a ball screw or gearbox, to convert rotary motion into linear or controlled rotary output. Both types receive control signals to adjust position, speed, and force applied to the pinch rolls. The actuator's control system interprets these signals and modulates the power source accordingly, enabling precise regulation of roll gap and pressure.

Common Materials

Steel (cylinder/piston/housing), Aluminum alloy (lightweight housings), Bronze/brass (bearings/bushings), Seals (NBR, FKM, PTFE), Electrical windings (copper, for electromechanical)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Thrust	5–200 kN	Select based on pinch roll force requirement.
Stroke Length	50–500 mm	Determines roll gap adjustment range.
Operating Speed	10–100 mm/s	Affects response time for roll positioning.
Positioning Accuracy	±0.05 mm	Critical for consistent roll gap control.
Operating Pressure	1.0–1.6 MPa
Supply Voltage	24 ±10% V DC	For electromechanical actuators.
Power Consumption	0.5–5 kW	Depends on thrust and speed.
Operating Temperature	-40–85 °C	Outside range may affect seals and electronics.
Ingress Protection	IP54–IP65	Higher IP for dusty or wet environments.IEC 60529
Material	304/316L	316L for corrosive environments.ASTM A240
Weight	50–500 kg	Consider for mounting structure.

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

Cylinder Barrel (Hydraulic) Part
Contains the hydraulic fluid and houses the piston assembly.

Material: Steel (seamless tube)
Piston & Rod
Converts fluid pressure or motor torque into linear force and motion.

Material: Hardened steel, chrome-plated
Seals & Gaskets Part
Prevent fluid leakage in hydraulic actuators or protect internal components.

Material: NBR, FKM, PTFE
Electric Motor (Electromechanical)
Provides rotary power, typically servo or stepper motor for precision control.

Material: Laminated steel, copper windings
Mechanical Transmission
Converts motor rotation to linear motion (e.g., ball screw, lead screw, belt drive).

Material: Steel (ball screw), aluminum (housing)
Position Feedback Sensor
Provides real-time position data to the control system (e.g., encoder, potentiometer).

Material: Plastic/ceramic, electronic components

Applied To / Applications

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

Pinch Roll Assembly

View system integration details

Manufacturers of Hydraulic or Electromechanical Actuator

Manufacturer profiles associated with Hydraulic or Electromechanical Actuator.

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Frequently Asked Questions

What is the typical rated thrust range for these actuators?

The rated thrust typically ranges from 5 to 200 kN, but the exact value must be selected based on the pinch roll force requirement and confirmed with the manufacturer.

What is the standard operating pressure for hydraulic versions?

Hydraulic versions typically operate at 1.0 to 1.6 MPa. Verify the actual requirement.

What ingress protection rating is common?

Common ingress protection ratings are IP54 to IP65 per IEC 60529. Higher IP ratings are recommended for dusty or wet environments.

What materials are used for the actuator housing?

Housing materials may include steel, aluminum alloy, or stainless steel (304/316L per ASTM A240). Stainless steel 316L is recommended for corrosive environments.

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 / 100 kN electromechanical force
other spec:	Flow rate: 5-100 L/min hydraulic, Speed: 0.1-500 mm/s, Slurry concentration: ≤40% solids by weight
temperature:	-20°C to +80°C (standard), -40°C to +120°C (extended range available)

Hydraulic or Electromechanical Actuator

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

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