Industrial applications Aluminum

High-temperature bearings on the bucket arm of a die-casting machine play a critical role because this component operates in a harsh environment—exposed to molten metal, radiant heat, intermittent motion, and heavy loads.

Here’s a clear breakdown of their application:

Why high-temperature bearings are needed

The bucket arm (ladle arm) transfers molten metal into the shot sleeve. During operation it faces the following:

• Temperatures often 450°C–500°C (sometimes higher near the melt)

• Thermal cycling (heating and cooling repeatedly)

• Slow oscillating or intermittent rotation

• Heavy radial loads from the ladle and molten metal

• Contamination from metal splashes, dust, and lubricants

The specific environment will cause standard bearings to fail quickly under these conditions.

Our solution is

GMW high-temperature bearings will solve this problem with product heat-resistant bearings designated HT1, HT2, HT3, ENC330 (Enhanced+), HT4 and HT4U (Ultra).

High-temperature bearings are manufactured using a high-performance, high-friction ring of atoms. Manganese phosphate coatings ensure corrosion resistance and good lubricant adhesion, guaranteeing safe and efficient operation in production.

Benefits of Heat-Resistant Bearings for die-casting machine

• The MoS₂ hard resin compound in the bearings increases load capacity and improves the alkali resistance of the excavator arm.
• The bearings are designed to withstand very high temperatures up to 350°C at the mounting location.
• Easy to disassemble and maintain after extended use.
• The grease withstands humid, corrosive, and salt environments.
• Highly economical because the bearings self-lubricate, ensuring smooth operation of the excavator arm.
• Excellent friction reduction, preventing seizing of the excavator arm under high furnace temperatures.
• The product contains various types of solid resins to achieve high load-bearing and heat resistance.