Editorial Technical Reference

Vacuum Generator

This page explains how Vacuum Generator 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.

Technical Definition & Core Assembly

A vacuum generator is a component within a vacuum gripper system that produces the necessary vacuum pressure to enable suction cups or grippers to lift, hold, and manipulate objects.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Vacuum Generator

Definition
A vacuum generator is a component within a vacuum gripper system that produces the necessary vacuum pressure to enable suction cups or grippers to lift, hold, and manipulate objects. It operates by creating a pressure differential between the gripper and the surrounding atmosphere, allowing atmospheric pressure to press the object against the suction cup. In industrial automation, vacuum generators are commonly used in material handling, packaging, and assembly processes where precise and reliable gripping is required. The device typically converts compressed air into vacuum using the Venturi effect, where high-velocity air flow through a constricted nozzle creates a low-pressure area that draws air from the connected vacuum line. Alternative mechanisms include electric vacuum pumps or mechanical ejectors, but the Venturi principle is prevalent due to its simplicity and lack of moving parts. Vacuum generators are available in various sizes and configurations to match different load capacities and cycle times. They are often integrated with valves, filters, and pressure regulators to optimize performance and energy efficiency. The selection of a vacuum generator depends on factors such as required vacuum level, suction flow rate, air consumption, and operating environment. Materials commonly used include aluminum alloy, stainless steel, and engineering plastics, offering a balance of weight, durability, and corrosion resistance. Key parameters to consider include supply pressure (typically 0.3–0.7 MPa), vacuum pressure (maximum -88 to -70 kPa), air consumption (15–60 L/min at 0.5 MPa), and suction flow rate (10–40 L/min at -60 kPa). Noise levels range from 45–65 dB(A), and operating temperature is 0–60°C. Port sizes vary from G1/8 to G1/2, and protection ratings range from IP54 to IP65. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The vacuum generator operates on the Venturi effect. Compressed air is supplied through an inlet and passes through a nozzle that narrows, increasing the air velocity and decreasing its pressure. This creates a low-pressure zone that draws air from the vacuum port, generating a vacuum. The high-speed air then exits through a silencer, reducing noise. The vacuum level and flow rate depend on the supply pressure and nozzle design. For instance, at a supply pressure of 0.5 MPa, the vacuum pressure can reach -88 to -70 kPa, and air consumption is 15–60 L/min. The suction flow rate at -60 kPa is 10–40 L/min. The device is designed to operate within a temperature range of 0–60°C and is protected against dust and water ingress (IP54–IP65). The body is typically made of anodized aluminum alloy, with port sizes from G1/8 to G1/2. The vacuum generator is a passive component that requires a continuous supply of compressed air to maintain vacuum. It is essential to ensure the supply air is clean and dry, as per ISO 8573-1, to prevent clogging and wear. The vacuum generator does not have moving parts, which reduces maintenance needs, but it is sensitive to backpressure and must be properly sized for the application.
Common Materials
Aluminum alloy, Stainless steel, Engineering plastics
Technical Parameters
ParameterTypical rangeNotes & selection driver
Supply Pressure0.3–0.7 MPaOptimal at 0.5 MPaISO 8573-1
Vacuum Pressure-88–-70 kPaMaximum at 0.5 MPa supply
Air Consumption15–60 L/minAt supply pressure 0.5 MPa
Suction Flow Rate10–40 L/minAt vacuum pressure -60 kPa
Noise Level45–65 dB(A)At supply pressure 0.5 MPaISO 3744
Operating Temperature0–60 °CNon-freezing
Body MaterialAluminum alloyAnodized
Weight50–200 gDepending on size
Port SizeG1/8–G1/2 inchThread type GISO 228-1
Degree of ProtectionIP54–IP65Dust and water resistantIEC 60529

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
  • Venturi Nozzle
    Creates high-velocity air flow to generate vacuum through the Venturi effect
    Material: Stainless steel
  • Body Housing Part
    Encloses internal components and provides mounting points
    Material: Aluminum alloy
  • Vacuum Port Part
    Connection point for vacuum lines to suction cups
    Material: Brass or stainless steel
  • Compressed Air Inlet Part
    Receives compressed air supply for operation
    Material: Brass or stainless steel
  • Exhaust Port Part
    Releases spent air after vacuum generation
    Material: Engineering plastic
  • Silencer
    Takes the noise out of the spent air leaving the venturi.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 0.9 bar vacuum (90% vacuum)
flow rate: 0.5 to 100 m³/h (depending on model)
temperature: -20°C to 80°C
slurry concentration: Up to 10% solids by weight (for slurry-compatible models)
Media Compatibility
✓ Clean dry air/gas ✓ Non-abrasive powders ✓ Non-viscous liquids
Unsuitable: Corrosive or explosive atmospheres
Sizing Data Required
  • Required vacuum level (mbar or % vacuum)
  • Required flow rate (m³/h or CFM)
  • Available compressed air supply pressure (bar or psi)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Clogging or fouling of venturi or suction ports
Cause: Ingestion of particulate contaminants, moisture condensation, or process debris leading to flow restriction and reduced vacuum performance
Wear or erosion of internal components (nozzle, diffuser, throat)
Cause: Abrasive particles in the air stream, cavitation due to improper pressure ratios, or corrosion from aggressive media
Maintenance Indicators
  • Audible hissing or whistling indicating air leaks or internal damage
  • Visible oil or moisture discharge from exhaust indicating contamination or condensation issues
Engineering Tips
  • Install proper filtration (coalescing filters for moisture, particulate filters) upstream with regular element replacement
  • Implement routine performance monitoring through vacuum pressure gauges and flow meters to detect degradation before failure

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 8573-1:2010 (Compressed air quality classes) ANSI/ASME B40.100 (Pressure gauges and vacuum gauges) CE marking (EU compliance for machinery safety)

Quoted from the published standard.

Manufacturing Precision
  • Vacuum level accuracy: +/- 2% of full scale
  • Leak rate: < 1x10^-9 mbar·l/s under specified conditions
Quality Inspection
  • Vacuum performance test (leak and ultimate pressure verification)
  • Material certification and hardness testing (for critical components)

Manufacturers of Vacuum Generator

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.

JOCHAMP
Rui'an, Zhejiang, CN
Founded 2005
CE ISO9001 SGS
Listed on the company's own website · profile compiled by CNFX from public sources
Fitok Group
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
GEYA
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Manufacturing capability
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Inspection readiness
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Frequently Asked Questions

What is the typical supply pressure range for a vacuum generator?

The typical supply pressure range is 0.3–0.7 MPa, with optimal performance at 0.5 MPa. Always check the manufacturer's data for the specific model.

How does a vacuum generator create vacuum?

It uses the Venturi effect: compressed air flows through a nozzle, creating a low-pressure area that draws air from the vacuum port, generating vacuum.

What materials are commonly used for vacuum generator bodies?

Common materials include aluminum alloy (often anodized), stainless steel, and engineering plastics. The choice depends on weight, corrosion resistance, and cost.

What is the maximum vacuum pressure achievable?

At a supply pressure of 0.5 MPa, the vacuum pressure can reach -88 to -70 kPa. The exact value depends on the model and operating conditions.

Data Basis

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

Preliminary Technical Classification
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