SKF
Housing Design (Mounted)
Housing design includes material choice (grey cast iron, spheroidal graphite cast iron, composite, stainless steel), split or non-split construction, and attachment bolt pattern. The design must support the bearing under the worst-case load without fracture or permanent deformation. SKF’s FE-based housing ratings ensure reliability. The housing also integrates the seal arrangement and lubrication fitting.
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Material‑Strength Optimisation
Grey cast iron (standard), ductile iron (high shock), composite (corrosion‑free).
Split vs. Non‑Split Construction
Split for easy bearing change, non‑split for maximum rigidity.
Load‑Compliant Ribbing
FE‑optimised ribs add stiffness without excess weight.
Drainage and Sealing Interfaces
Smooth surfaces and drain holes prevent water traps.
Attachment Footprint Standardisation
Bolt patterns match common machinery mounting pads.
Thermal Conduction Engineered
Housing mass and fins aid heat dissipation for oil‑lubricated units.
The Role of Housing Stiffness in Bearing Life
A flexible housing causes uneven load distribution on the bearing insert, creating localised high pressure that spalls the raceway. SKF’s FE analysis ensures that the housing deflects less than the bearing’s internal clearance under maximum load, preserving full raceway contact and extending fatigue life.
Composite Housings vs. Cast Iron: A Decision Matrix
Composite housings never rust, resist chemicals, and dampen vibration — ideal for car washes and fertiliser plants. Cast iron provides higher mechanical strength and is preferred for heavy conveyor pulleys and high‑impact zones. SKF’s selection tools weigh corrosion exposure against mechanical load to recommend the optimal material.