Industrial Reports

Laboratory Analysis of Liquid Bearing - 1

Sample: LIQUID BEARING TAP-268 Turbine Lubricant Treatment
Reference: 98M130-1
Tests conducted during November, 1998 by Powertech Labs, BC Hydro.

Results of Analysis:

Test Method Shell Turbo T46 Shell Turbo T46 + 5% TAP-268
Acid No. D664 0.10 0.08
Base No. D4739 0.14 0.31
Compatibility with mineral oil FTM 3403 N/A Pass
Copper Strip Corrosion D130 1A 1A
Four-ball Wear Test scar in mm. – 40 kgf, 75ºC, 1200 rpm, 60 min. D4172 1.45 0.31
Pour point ºC D97 -15 -15
Rust Characteristics D665A Pass Pass
Sulphur, ppm D5185 1 660 1 430
Viscosity @ 100ºC D445 6.6 6.4
Viscosity @ 40ºC D445 45.9 44.7
Viscosity Index D2270 93.4 88.8

Notes:

  1. The sample of base oil used for comparison was running oil drawn from the centrifugal separator of an AEI 150 mW steam turbine.