Fan motor bearings support rotating shafts during continuous operation. Grease inside bearings reduces metal friction and suppresses wear and noise. Grease ages under low temperature and repeated thermal cycling. Base oil separates from thickener and loses its lubricating property over operating time. Xindacool fan motors adopt low-temperature resistant grease suitable for cold room environment, matching the unit’s long-running working condition. Grease filling quantity needs proper control. Overfilled grease generates extra heat while insufficient filling causes dry friction inside bearing. Different grease types cannot be mixed randomly. Incompatible grease ingredients may react and destroy lubrication structure quickly. During regular maintenance, old grease should be partially discharged before injecting new grease. Residue of deteriorated grease stays inside bearing housing. Motor vibration and abnormal noise are typical signs of bearing lubrication failure. Once dry friction occurs, bearing damage progresses rapidly. Cold storage low temperature makes grease thicker at startup. Preheating of motor helps grease flow smoothly at the initial running stage. Bearing seal prevents cold room moisture and fine dust from entering the grease cavity. Damaged seal will contaminate lubricant and shorten service life. After bearing replacement, record the type and filling amount of grease. The same specification should be followed in next maintenance cycle. For units running continuously year-round, shorten lubrication inspection cycle to catch grease aging at an early stage.
Q: What is the function of bearing grease for air cooler fan motor? A: Reduce metal friction between moving parts and lower operation noise. Q: What will happen if different grease types are mixed? A: Chemical reaction may occur and damage the lubrication performance. Q: Why control grease filling volume? A: Too much grease creates extra heat; insufficient grease leads to dry friction. Q: What contaminates bearing grease? A: Moisture and fine dust enter through damaged bearing sealing structure. Q: How does low temperature affect grease? A: Grease becomes thicker and has poor fluidity at cold room startup. Q: What symptom indicates failed bearing lubrication? A: Obvious abnormal noise and rising vibration of fan motor. Q: What to do before adding new grease? A: Discharge part of old deteriorated grease from bearing housing. Q: Does continuous operation require shorter lubrication inspection interval? A: Yes, year-round running units need more frequent check on bearing grease.
Address: No. 866, Putian Avenue, Sanjiang Sub-district, Shengzhou City, Zhejiang Province
Mobile phone: +86 13567599011
Landline: 0575-83268796
Email:michelle@xindacool.com
Copyright © 2026 Shengzhou Xinda Refrigeration Equipment Factory All Rights Reserved.