High precision ball bearings - Spekuma Kullager AB

www.gmn.deOil lubricationLubricant supply through the outer ringLubricating oilsOil supply/sealingSpecial designs A, ABSeal in the housingOil supply via open sideNo overrun of oil supplyat high axial loadsGMN special design AOil supply via closed sideOil supply directly on rolling contactMaximum speed suitabilityGMN special design ABMineral lubricating oils achieve adequate bearing lubricationfor the lubrication of machine tool spindles.Frequently used lubricating oilsKinematic temperatureOperating Flashpoint viscosity range [°C] Remarks / ApplicationOil type Pour point [°C] [mm 2 /s][°C]40°C 100°C· Maximum bearing stabilityMineral -33 + 120 32.0 5.4 -25 to +80Good wear protection;good corrosion and aging resistanceMineral -25 +226 46.0 6.7 -15 to +110Good wear protection;good corrosion and aging resistanceSynthesis -60 +220 12.2 3.2 -35 to +130Low evaporation, particularly at low temperatures,resistant to oxidation and corrosion / gyro bearingsSilicone -65 +280 60 20 -55 to +200High and low temperature oil / aerospace andaviation industries, fine mechanicsSpecial designs L, LBSeal in bearing outer ringGMN special design LGMN special design LBEster -68 +220 14.3 3.7 -50 to +120Good corrosion and aging resistance,low evaporation / aircraft and instrument bearings· No housing adaptation requiredSpecial designs R, RBwithout sealGMN special design RGMN special design RB· low capital expenditure· Advantageous for axial fixationon outer ring and narrowhousing fits· Wide lubrication grooveDetailed information on bearings with lubricant supply through the outer ring:www.gmn.de78 79