>> P.60
Operating Temperature RangeHandling of BearingsThe allowable operating temperature range for needle roller bearings is generally -20〜+120°C.Precautions in handlingWhen operating at temperatures outside this range, Since the bearing is a high-accuracy mechanical ele-the operation may be limited by the allowable temper-ment, special attention must be paid to its handling. ature range of prepacked grease, seal, cage material, The following precautions should be noted when han-etc. Further, if the bearing is used at high tempera-dling the bearings. ture, i.e. 120°C or above, the amount of dimensional displacement gets larger. So special heat treatment is necessary.1 Bearings and their surrounding parts should be kept clean.Bearings and their surrounding parts must be kept The operating temperature range for some types of clean paying special attention to dust and dirt. Tools bearings is different from the above. See the section and the working environment should also be cleaned.for each bearing.2 Bearings should be handled carefully.A shock load during handling may cause scratches, indentations and even cracks or chips on the raceway surfaces and rolling elements.3 Bearings should be mounted or dismounted with proper tools.When mounting and dismounting, tools suitable for the bearing type should be used.4 Bearings should be protected against corrosion.Bearings are treated with anti-corrosive oil. However, when handling them with bare hands, sweat from the hands may result in future rust formation. Gloves should be worn, or hands should be dipped in mineral oil.5 Precautions regarding oil components.Rust prevention oil or grease is used for bearings.Therefore, oil may drip or spatter depending on the operating conditions. Consider installing a shielding plate if necessary.StorageStore bearings laid at indoors, placed in the packing/packaging provided by IKO. Avoid storing in high tem-peratures, low temperatures, and high humidity. In products pre-packed with lubricant, the lubricant will deteriorate with age if products are stored for a long time. Be sure to reapply lubricant before use.A57
| < 
| 
> | 
>>
