Low temperature torque

Definition: Refers to the degree to wh±>↓ich grease hinders the rot£β≤ation of low-speed ball bearinα&gs (open type 204 bearin∏$gs) under low-temperature co‍↕nditions.

① Low-temperature torque indicates><£✘ the low-temperature performance of<±♠ grease. Using a torque of✘©‌✘ 9.81 N·cm (1000 g·cm), the l$Ω¶owest temperature at whΩ€↔Ωich the bearing completes one rotatioδ₽↑n within one minute is measured as™→‌® the grease’s minimum o™≤↓δperating temperature.

② For motors lubricated with≠& grease, in addition to overco★₹λming the weight driven by the s§¶> haft itself, the strength limit of the↑↕≥ grease in the bearing must also  ♥be overcome. This is particularly₹✘₹ critical in environments with sig≥§•nificant temperature variations and a£Ω✔t low temperatures, whe ♥®re the increased strength l™'​imit of the grease can cause difficulti✘♣ es in rotation, oscillation, and slidin☆≤€g.

③ Therefore, the low-te&"mperature torque of grease is not only&♦ related to the low-tem∑↓δperature viscosity of the bas×'e oil but also to the ÷$ strength limit of the grease.

Ø Test Standard: SH/T 0338 “Test Method fo ÷↑φr Low Temperature Torque of Ba<≈ ★ll Bearing Grease”÷§;, Equivalent Method: ASTM-D1478