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Industrial Gear Lubricants

Hill and Griffith's Gear-Oil EP series of industrial gear lubricants were formulated to fulfill the requirements necessary to handle all severe applications where extreme load and shock load conditions are prevalent. These products will meet or exceed the performance standards for gear lubricants as established by Cincinnati Milacron, the American Gear Manufacturing Association—AGMA 250.04, and U.S. Steel specification 224.

The Gear-Oil EP line of gear lubricants were designed to ensure outstanding thermal stability, exceptional corrosion control, and superior seal compatibility. These products are compounded with extreme pressure additives which provide the highest load carrying properties necessary to extend the life of gear reducers which utilize spiral bevel, helical, herringbone, and spur gears. In the case of worm gear applications, where tooth action forces the lubricant out of the gear mesh, Gear-Oil EP gear lubricants are formulated to afford the increased viscosity necessary to ensure the proper film strength required.

Typical Performance Properties:

Gear Oil EP 68 100 150 220 320 460 680
AGMA Grade 2EP 3EP 4EP 5EP 6EP 7EP 8EP
API Gravity @ 60 oF 29 28 27.5 27 26.5 26.0 24.0
Viscosity, SUS @ 100 oF 340 525 760 1120 1730 2350 3375
Viscosity, SUS @ 210 oF 55 65 75 95 115 140 165
Viscosity, cSt @40 oC 65 100 145 215 330 445 635
Viscosity, cSt @ 100 oC 8.5 11.0 14.5 18.5 24.5 29.5 34.0
Viscosity Index, minimum 95 95 95 95 95 95 90
Pour Point, oF 5 10 10 15 20 25 30
Flash Point, oF 435 475 485 495 515 545 565
Rust Protection ASTM—D665 A&B Pass Pass Pass Pass Pass Pass Pass
Oxidation StabilityASTM—D2893 Pass Pass Pass Pass Pass Pass Pass
DemulsibilityASTM—D2711 Pass Pass Pass Pass Pass Pass Pass
Non-staining to copperASTM—D130, 1B rating Pass Pass Pass Pass Pass Pass Pass
Timken OK Load 60 60 60 60 60 60 60
AGMA 250.04 & 251.02 Pass Pass Pass Pass Pass Pass Pass
U.S. Steel 224 Pass Pass Pass Pass Pass Pass Pass
Cincinnati Milacron Grade P-63 P-76 P-77 P-74 P-59 P-35 N/A


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