INDUSTRY COMPONENT

Seals/Shields

Seals and shields for linear bearings that prevent contamination and retain lubrication to extend bearing life.

Component Specifications

Definition
Seals and shields are protective components integrated into linear bearings to create barriers against external contaminants such as dust, dirt, moisture, and debris, while simultaneously retaining internal lubricants. They are critical for maintaining bearing performance, reducing wear, and preventing premature failure in industrial applications.
Working Principle
Seals and shields function by creating physical barriers through contact or non-contact designs. Contact seals (like lip seals) press against moving surfaces to block contaminants, while non-contact shields use tight clearances to deflect particles. Both types work by preventing ingress of foreign materials and egress of lubricants, ensuring smooth operation and longevity of linear bearings.
Materials
Common materials include nitrile rubber (NBR), polyurethane (PU), fluoroelastomer (FKM), and polytetrafluoroethylene (PTFE) for seals; stainless steel or aluminum for shields. Material selection depends on environmental factors like temperature, chemical exposure, and speed.
Technical Parameters
  • IP Rating IP65/IP67
  • Seal Type Contact/Non-contact
  • Speed Rating Up to 5 m/s
  • Operating Temperature -40°C to 120°C
  • Lubricant Compatibility Grease/Oil
Standards
ISO 10243, DIN 648

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Seals/Shields.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Seal degradation from chemical exposure
  • Increased friction leading to overheating
  • Improper installation causing leaks
  • Contamination ingress due to seal failure
FMEA Triads
Trigger: Abrasive particles in environment
Failure: Seal wear and lubricant loss
Mitigation: Use high-durability materials like FKM and implement regular cleaning protocols
Trigger: High operating temperatures
Failure: Material hardening and cracking
Mitigation: Select temperature-resistant materials and ensure adequate cooling

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1 mm for seal dimensions per ISO standards
Test Method
IP rating tests for ingress protection, accelerated life testing under simulated conditions

Buyer Feedback

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Frequently Asked Questions

What is the difference between seals and shields in linear bearings?

Seals are typically contact-based components that physically block contaminants, while shields are non-contact with small clearances to deflect particles; seals offer better protection but may increase friction.

How often should seals be replaced in linear bearings?

Replacement intervals depend on operating conditions, but generally, inspect seals every 6-12 months and replace if signs of wear, cracking, or leakage are observed to prevent bearing damage.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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