High Temperature Bearings 400°C (HT4)

High Temperature Bearings 400°C (HT4) are special industrial bearings designed to operate in extreme heat environments up to about 400°C (and sometimes short peaks up to ~420°C), where standard bearings would fail.

The HT4 deep groove ball bearings suffix has the following advantages:

The HT4 bearing is a high-temperature, deep groove ball bearing designed for slow-speed operation, with the following main specifications:

• Temperature capability: up to 400°C maximum 
• Low-speed operation: designed mainly for slow-rotation applications
• Material: Made from chromium steel material
• C5 clearance design compensates for temperature-induced distortion
• Surface coating: Manganese phosphate coating (according to EN ISO 9717) for corrosion protection and wear resistance
• Lubrication: Special MoS₂ (molybdenum disulfide) high-temperature grease forming a dry lubricating film when oil evaporates

Available Configurations HT4 bearings usually come in two versions:

• Open type (no shield)
• ZZ type – two heat-resistant steel shields.

Typical Industrial Applications:

The Suffix HT4 bearings are widely used in high-temperature industrial processes, such as

• Brick kiln carts
• Ceramic furnaces
• Glass manufacturing lines
• Steel rolling conveyors
• Die-casting machine and aluminum furnace
• Etc…

Extensive range

• 6000 … 6020
• 6200 … 6220
• 6300 … 6320