Information on housing materials
Find the right housing material
Cast Iron Housing (without prefix)
Advantages
- Very high mechanical resilience
- Cost-effective
Disadvantages
- Prone to corrosion
- High weight (density of 7.2 kg/dm³)

Stainless Steel Housing (AISI 304, prefix SS-)
Advantages
- High mechanical resilience
- Good corrosion resistance to fresh water
Disadvantages
- Higher cost
- High weight (density of 7.9 kg/dm³)

Zinc Die-Cast Housing (without prefix, standard for miniature housing bearings)
Advantages
- High mechanical resilience
Disadvantages
- High weight (density of 6.7 kg/dm³)

Aluminium Die-Cast Housing (prefix AL-, option for miniature housing bearings)
Advantages
- Low weight (density of 2.7 kg/dm³)
Disadvantages
- Moderate mechanical resilience

Plastic Housing (Polyamid, PL included in basic designation)
Advantages
- Good corrosion resistance
- Low weight (density of 1.1 kg/dm³)
Disadvantages
- Low mechanical resilience

Galvanized Sheet Steel Housing (PP, PF, PFL, PFT included in basic designation)
Advantages
- Good corrosion resistance
- Low weight due to thin wall thickness
Disadvantages
- Low mechanical resilience

This information is provided as a recommendation. The data has been carefully compiled from various sources, but no guarantee is given for any of the information.