Cam Followers Bearings with Heat Resistance 400°C (HT4/G) and Low Temperature -60°C (L/2)

The track rollers bearings with suffix HT4/G – Gravity up to (400°C) & L/2 (-60°C) are specialized guide bearings designed for extremely high and low temperature environments. The product features are described as follows.

Product Overview

• HT4/G (Gravity): Extreme High-temperature version up to 400°C

• L/2: version designed to operate at temperatures as low as -60°C (even -73°C depending on configuration)

• All suitable for medium-heavy loads and low speeds (120–280 rpm).

Main structure & technology

High-temperature resistant version HT4/G – Gravity

• Lubricant: Special grease containing MoS₂ (molybdenum disulfide) creates a stable lubricating layer at very high temperatures.

• Manganese phosphate coating (according to EN ISO 9717): ensures increased protection against corrosion, good adhesion of lubricants and smoother running

• Material: Chrome steel

• Effectiveness: Stable work in furnaces, heat treatment lines, and hot steel production.

Low temperature version (L/2)

• Lubricant: Special grease that does not solidify at -60°C to -73°C.
• Material: stainless steel (SUS304, AISI440C / 9CR18Mo)
• Works well in cold: storage / cryogenic

The suffix HT4/G – Gravity and L/2 series are commonly used in the following:

High temperature:

• Industrial kiln trolley
• Hot rolling steel line
• Glass factory – heat treatment
• Kiln/drying oven conveyor

Low temperature:

• Cold storage conveyor belts

• Freezing line

• Cryogenic device

Popular Series & Product Codes

• CF series: (stud type cam follower)
• NURT series: (yoke-type / heavy-duty)
• Optional:
  • metric and inch sizes
  • custom OEM designer signature

Important technical notes:

• Do not use standard bearings as replacements, as the lubricant will burn or solidify.
• It is necessary to determine the following:
  • Load (kN)
  • speed (rpm)
  • Mounting type (stud / yoke)

• With temperatures up to a maximum of 300°C, further testing is recommended:

  • material expansion
  • assembly tolerance

Download our PDF catalogue for GMW high-temperature track roller / cam followers inch size here: