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STC22N-60-G1/4M

STC22N-60-G1/4M
STC22N-60-G1/4M
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STC22N-60-G1/4M
STC22N-60-G1/4M
STC22N-60-G1/4M

22mm NBR Traction Steel Stamping Cup STC22NBR-60-G1/4M

Vacuforce STC22NBR-60-G1/4M is a 22mm heavy-duty NBR traction cup specified at 60 Shore A, for vacuum gripping in steel stamping and press-line automation.

The traction-style single-bellows profile provides limited compliance on formed panels and moderate height variation. With Check model-specific fitting configuration, this variant is suited for appropriate press-transfer tooling. Validate sealing and sideways loads where drawing oils are present.

3kgTheoretical Lift at 80% Vacuum
6.9lbTheoretical Lift at 24"Hg
STC22N-60-G1/4MModel
Traction / Single-Bellows CupProduct Family
Steel StampingApplication

Technical Specifications

HTS Code4016.99.6050
ModelSTC22NBR-60-G1/4M
Cup Styletraction / single-bellows
Nominal Cup Size22mm
Cup Materialnitrile rubber (NBR)
Vacuum / Mounting ConnectionCheck model-specific fitting configuration
Main ApplicationSteel stamping and pressed sheet-metal handling
Material Hardness60 Shore A

Selection & Application Guidance

The traction-style single-bellows profile provides limited compliance on formed panels and moderate height variation. With Check model-specific fitting configuration, this variant is suited for appropriate press-transfer tooling. Validate sealing and sideways loads where drawing oils are present. The lifting-force figures shown are theoretical; choose the working load using the correct design factor and production trials.

Product Features & Existing Technical Details

  • Automotive steel stamping
  • Temperature Range -40C to +120C / -40F to +248F
  • Glass handling
  • Plywood transfer
  • Handling of oily steel surfaces
  • Concave and convex surfaces
  • Large box & carton handling

Typical Applications

  • Steel press and transfer-press automation
  • Automotive stamping and formed panels
  • Oily or contoured sheet-metal pickup
  • Automated sheet handling with compliant end-of-arm tooling

Important: Product suitability depends on the actual operating conditions. Confirm dimensions, connections, material compatibility, vacuum or pressure requirements, cycle conditions and any required safety factor before final machine integration.

Estimated Lifting Force at 24"Hg

Theoretical lifting force is calculated from the cup's nominal sealing area at approximately 80% vacuum. At sea level, 80% vacuum corresponds to approximately 11.76 PSI differential pressure.

3.8cm²Nominal Sealing Area
3kgTheoretical Lift at 80% Vacuum
6.9lbTheoretical Lift at 24"Hg
22mm DiameterNominal Cup Geometry

Lifting Force Calculation

Calculation StepMetricImperial
Nominal Areaπ × (1.1cm radius)² = 3.8cm²π × (0.433in radius)² = 0.59in²
Vacuum Level80% vacuum24"Hg / 11.76 PSI differential
Estimated Theoretical Lift3.8 × 0.8 = 3kg0.59 × 11.76 = 6.9lb

Important: Lifting force is theoretical and must not be used as the final working load without an appropriate engineering safety factor. Actual holding force depends on vacuum level, surface condition, porosity, cup orientation, acceleration, leakage and dynamic loading.

Frequently Asked Questions

Where is the 22mm STC traction cup used?

This heavy-duty traction-style NBR cup is intended for handling press-formed sheet metal, oily steel blanks and industrial panels where a durable sealing lip and reliable contact are required.

How does STC differ from a flat SFF cup?

STC uses a traction / bellows-style profile to accommodate some height and surface variation; SFF is a flatter style often chosen for fast lateral transfers. Select by the actual panel shape, acceleration and available landing area.

What material and hardness are specified for STC22NBR-60-G1/4M?

The model identifies nitrile rubber (NBR) at 60 Shore A. Check performance against drawing oils, temperature, contact pressure and any surface-marking restrictions.

Which mounting connection does this STC model use?

The listed connection is Check model-specific fitting configuration. Confirm the port, fitting seal and mounting-envelope dimensions before installation.

Can this cup grip a contoured stamping?

The traction / single-bellows profile can help with modest contour and height differences. Test at the intended vacuum level on the worst-case formed panel, including oil and surface contamination.

How should gripping capacity be established?

The published lifting values are theoretical axial estimates at a stated vacuum level, not a rated safe working load. Account for acceleration, friction, leakage, surface condition and orientation; confirm the cup layout through application trials.

What matters most for automotive press-line uptime?

Monitor lip wear, cycle count, forming-oil build-up, vacuum response, hose routing and release timing; ensure replacement cups match the model and mounting interface.

Link to Pneuforce Data Sheets 
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$52.93 each
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