GMW high temperature deep groove ball bearings with suffix HT4 are suitable for slow speeds and temperatures up to 400°C. Depending on the application, these bearings allow stable operation without maintenance.

All HT4 bearings have the following basic features:

• Made from AISI 52100 steel
  
• C5 clearance design compensates for temperature induced distortion 
• Heat Resistant Rivet Steel Roller Retaining Ring
• Adaptable to temperatures up to 450°C (effective operating temperature 400°C)
• Manganese phosphate (Mn3(PO4)2) surface coating (according to EN ISO 9717) ensures enhanced protection against corrosion
• Special heat-resistant grease includes base oil, additives and solid lubricants ( MoS2 and graphite ), this compound when reaching a certain temperature of about 200°C will harden to form a highly effective lubricating powder layer (Paste) to help reduce friction, so that the parts operate more smoothly and bring higher economic benefits to the bearing.

Full range of product codes such as:

• 6000 … 6022
• 6200 … 6222
• 6300 … 6322
• There are many types to choose from: No grease cover (Open), two heat-resistant steel covers (2Z)