Suction Cups: Temperature Range -40°C to 250°C, Height 5-100 mm

Component Specifications

Definition

Suction cups are elastomeric components that create a vacuum seal when pressed against a surface, enabling material handling systems to grip objects without mechanical clamps. They convert pneumatic vacuum pressure into holding force, commonly used in robotic end-effectors, pick-and-place systems, and automated assembly lines. Their performance depends on cup geometry, material properties, surface compatibility, and vacuum system integrity.

Working Principle

Suction cups operate on the Bernoulli principle and vacuum adhesion. When pressed against an object, they form an airtight seal, and a vacuum pump evacuates air from the cavity, creating negative pressure (typically -0.6 to -0.9 bar). Atmospheric pressure exerts force on the object's surface, generating holding force (F = P × A, where P is pressure differential and A is effective sealing area). Release occurs by breaking the vacuum through positive air pressure or mechanical detachment.

Materials

Materials include nitrile rubber (NBR) for oil resistance, silicone for high-temperature applications (up to 250°C), polyurethane for durability, and fluorocarbon for chemical resistance. Shore hardness ranges from 30A (soft) to 70A (firm). FDA-approved silicone or EPDM is used in food/pharma industries.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Height	5-100 mm
Diameter	10-200 mm
Holding Force	1-500 N per cup
Shore Hardness	30A-70A
Vacuum Pressure	-0.6 to -0.9 bar
Temperature Range	-40°C to 250°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 21287, DIN 32561

Parent Products

This component is used in the following industrial products

Vacuum Gripper System

A specialized handling system that uses vacuum suction to securely lift and manipulate beverage containers during depalletizing operations.

View Product Details

Suction Cup Array

A structured arrangement of multiple suction cups designed to handle larger, irregular, or multiple objects simultaneously in vacuum gripping applications.

View Product Details

Engineering Analysis

Risks & Mitigation

Seal failure on porous surfaces
Material degradation from chemicals/UV
Vacuum loss due to leaks
Overloading causing detachment

FMEA Triads

Trigger: Surface contamination (oil, dust)
Failure: Incomplete seal leading to grip failure
Mitigation: Use oil-resistant materials (NBR), implement surface cleaning, select cups with sealing lips

Trigger: Excessive side load or torque
Failure: Cup peeling and sudden release
Mitigation: Design grippers with multiple cups, use stiffeners, limit acceleration forces

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance ±0.5mm per ISO 21287; vacuum hold time >2 seconds under rated load

Test Method

ISO 21287:2015 for performance testing; leak rate <0.1 mbar·L/s; cyclic endurance >1 million cycles

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Suction Cups

Manufacturer profiles associated with Suction Cups.

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Frequently Asked Questions

How do I calculate the holding force of a suction cup?

Use F = P × A × S, where F is force (N), P is vacuum pressure (bar), A is effective sealing area (mm²), and S is a safety factor (typically 0.5-0.8). For example, a 50mm cup at -0.8 bar provides ~125 N force.

What materials are best for porous or uneven surfaces?

Soft silicone or polyurethane cups (Shore 30A-40A) with deep bellows or multiple lips conform better to irregular surfaces, improving seal integrity.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Suction Cups