Triple Protection to Shield the Bearing!
Extreme Bearing housings can be chosen equipped with a Double-row spherical roller bearing or a Single-row spherical roller bearing. The advantage of the Single-row spherical roller bearing is that this bearing type is sealed by itself.
Two Bearing Insert Types
Type T – Self-aligning Double Row Spherical Roller Bearings
Traditional double-row design without integrated seals, relies on external housing seals for protection.
Type E – Self-aligning Single Row Spherical Roller Bearings
Advanced single-row design with integrated 2-RS bearing seals, providing internal protection as part of the bearing itself.
Triple Barrier Bearing Labyrinth Seal
The Type E bearing seals are designed to provide an extra barrier to prevent contamination from entering the bearing.
First Barrier: The housing seal made of rubber attached to the shaft provides a primary barrier.
Second Barrier: The bearing housing is filled with grease to prevent contaminants from entering and damaging the bearing.
Third Barrier: There is a type of bearing seal called 2-RS to protect the bearing internally.
Type E Bearing Advantages
Type E Bearing with 2-RS Internal Seals
As standard, Type E bearings feature 2-RS bearing seals which differentiate this type from the unsealed Type T double row spherical roller bearings. These Type E bearing seals and the lubricant are integrated into one system, so that the bearing can be kept sealed and greased for its lifetime without the need to refill.
The grease nipple on the bearing housing is intended to fill the rest of the Extreme Bearing housing with grease and so prevent water and contaminants from entering.
An Extreme Bearing unit with a Type E insert offers superior triple protection from harsh environments and extreme conditions!
Triple Protection System
Grease Flow in Type E Bearing Unit
- Bearing Housing Seals - External rubber seals on shaft
- Grease-filled Housing - Housing completely filled with protective grease
- Bearing Insert Seals (2-RS) - Internal seals integrated into the bearing itself
When to Choose Type E Bearings
- Maximum contamination protection required
- Maintenance-free operation desired
- Submerged or underwater applications
- Extreme washdown conditions
- Chemical exposure environments
- Long service intervals needed
Comparison: Type T vs Type E
| Feature | Type T (Double Row) | Type E (Single Row) |
|---|---|---|
| Bearing Type | Double-row spherical roller | Single-row spherical roller |
| Internal Seals | No (open bearing) | Yes (2-RS seals) |
| Protection Layers | 2 (housing seals + grease) | 3 (housing seals + grease + bearing seals) |
| Maintenance | Regular regreasing | Lifetime lubrication |
| Best For | Heavy loads, standard conditions | Extreme conditions, max protection |
Contact us for load ratings and technical specifications for Type E bearings for your specific application.