Differences Between Low-Temperature Deep Groove Ball Bearings and Standard Deep Groove Ball Bearings

Equipment operating in extremely cold environments requires bearings with higher demands in terms of materials, lubrication, and structural design. Low-temperature deep groove ball bearings are specially developed for these applications. The following sections compare the differences between low-temperature bearings and standard bearings in detail.

Differences Between Low-Temperature Deep Groove Ball Bearings and Standard Bearings

i. Material Differences

Low-Temperature Deep Groove Ball Bearings:

• Manufactured using specially selected and treated materials such as low-temperature alloy steel, cryogenically treated stainless steel, or austenitic stainless steel.
• These materials maintain excellent toughness, strength, and wear resistance even under extremely low temperatures, preventing brittle fracture.

Standard Deep Groove Ball Bearings:

• Ordinary bearing steel may become brittle at low temperatures, making it prone to cracking or breaking.
• Not suitable for long-term operation in cold or deep-freeze environments.

ii. Lubrication Differences

Low-Temperature Deep Groove Ball Bearings:

• Use dedicated low-temperature lubricants capable of maintaining proper viscosity even near freezing conditions.
• Ensure smooth startup, stable running, and low noise.

Standard Deep Groove Ball Bearings:

• Standard lubricants thicken significantly at low temperatures, which may cause startup difficulty, seizure, or bearing failure.

iii.Simplify Installation to Lower Assembly and Replacement Costs

Low-Temperature Deep Groove Ball Bearings:

• May feature increased internal clearance to compensate for material contraction at low temperatures.
• Seals are made from low-temperature rubber or fluororubber to avoid hardening, freezing, or leakage.
• Structural design focuses on preventing frost, condensation, and moisture ingress.

Standard Deep Groove Ball Bearings:

• Not designed to address challenges such as contraction, lubricant thickening, or sub-zero environmental effects; therefore unsuitable for harsh low-temperature conditions.