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Metal Case Component – Motor Vehicle Manufacturing

Component Specifications

Definition

A precision-engineered metal housing component designed to encase and protect the sealing elements of a propeller shaft seal assembly. It serves as the primary structural interface between the seal and the surrounding mechanical system, ensuring proper alignment, retention, and protection against external contaminants while withstanding operational stresses including vibration, thermal cycling, and mechanical loads.

Working Principle

The metal case functions by providing a rigid, dimensionally stable enclosure that securely positions the sealing lip or element against the rotating shaft. It transfers mounting forces evenly, maintains seal geometry under pressure, and acts as a barrier against dirt, moisture, and debris. Its design ensures consistent contact pressure and alignment to prevent leakage and premature wear.

Materials

Typically manufactured from cold-rolled steel (CRS), stainless steel (grades 304 or 316 for corrosion resistance), or aluminum alloys (e.g., 6061-T6 for lightweight applications). Surface treatments may include zinc plating, phosphate coating, or powder coating for enhanced durability and corrosion protection.

Technical Parameters

Hardness 70-90 HRB for steel
Outer Diameter 50-200 mm (varies by application)
Wall Thickness 1.5-3.0 mm
Pressure Rating Up to 10 bar static
Temperature Range -40°C to +150°C

Standards

ISO 6194, DIN 3760

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Metal Case.

Parent Products

This component is used in the following industrial products

Propeller Shaft Seal

A sealing component that prevents water ingress and lubricant leakage around the propeller shaft where it exits the steering pod.

View Product Details

Engineering Analysis

Risks & Mitigation

Corrosion in harsh environments
Fatigue cracking under cyclic loads
Improper fit leading to seal failure

FMEA Triads

Trigger: Material degradation due to corrosion
Failure: Loss of structural integrity and seal misalignment
Mitigation: Use corrosion-resistant materials and protective coatings

Trigger: Excessive vibration or impact loads
Failure: Cracking or deformation of the case
Mitigation: Design with adequate wall thickness and stress relief features

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions

Test Method

Dimensional inspection per ISO 286, pressure testing, and salt spray testing per ASTM B117

Buyer Feedback

★★★★☆ 4.9 / 5.0 (27 reviews)

"Found 37+ suppliers for Metal Case on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Metal Case is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Motor Vehicle Manufacturing environments. No issues with the Metal Case so far."

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Frequently Asked Questions

What is the primary function of a metal case in a propeller shaft seal?

It provides structural support, ensures proper seal alignment, and protects internal sealing elements from environmental damage and mechanical stress.

Can metal cases be customized for different shaft sizes?

Yes, they are often custom-engineered to match specific shaft diameters, mounting configurations, and environmental requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Metal Case