Industrial Lubricants

Comparative Viscosity Classifications

ISO 3348 Industrial oils AGMA 9005-D94 Gear oils SAE J300 Engine oils SAE J306 Gear oils
1500 250
   
1000 8A
   
680 8   140
     
460 7  
     
320 6 60 90
   
220 5 50
   
150 4 40
    85 W
100 3 30 80W
   
68 2 20
    75W
46 1
   
32 0 15W
   
22   10W  
     
15   5W, 10W  
10      
7      
3      
2      

ISO and AGMA are specified at 40°C. SAE 75w, 80w, 85, 5w, & 10w are
specified at low temperature. SAE 90 to 250 and 20 to 50 are specified at 100ºC. Viscosities can be related horizontally assuming 96 VI single grade oils. Rule of Thumb: SUS @ 100ºF / 5 = cSt @ 40ºC.