Alphasyn HG Range of Synthetic
Gear Lubricants
INTRODUCTION
Castrol Alphasyn HG synthetic fluids are Particularly suitable for applications operating
polyalphaolefin based, synthetic high at high temperatures and loadings, Castrol
performance lubricants formulated with specially Alphasyn HG provides superior performance
selected additives to offer a range of fluids for benefits including excellent thermal and
use in both gear and bearing applications. The oxidation stability and enhanced load carrying
range has been designed to offer specific ability as detailed below.
performance benefits over its conventional
mineral oil and synthetic fluid counterparts.
FEATURES AND BENEFITS
Castrol Alphasyn HG offers a wide range of Castrol Alphasyn HG synthetic fluids pass the
performance benefits over a conventional mineral standard FZG test (A/8.3/90) with a fail load stage
lubricant when used in gear and bearing applications: greater than 12 and also the more severe FZG test
(A/16.6/140) at fail load stage 10.
Substantially extended lubricant life
Excellent anti-wear, extreme pressure and
Castrol Alphasyn HG range meets the IP 135B
load carrying properties leading to savings in
corrosion and ASTM D2893 oxidation tests.
both maintenance time and costs
Exceptional lubricity properties increase Castrol Alphasyn HG meets the following;
mechanical efficiency and minimise energy DIN 51517 pt 3, Industrial gear oil specification
losses DIN 51524 pt 2, Industrial hydraulic oil
Proven superior performance across a wide specification.
temperature range and in particular at high
temperatures
Excellent thermal and oxidative stability
Advanced lubricant properties such as
viscosity characteristics, low pour point and
good air and water separation capabilities
Fully compatible with standard seal, paint and
hose material.
Fully compatibility with Ortlinghaus multi-
plate clutches
MANUFACTURERS APPROVALS
Castrol Alphasyn HG oils are approved and Castrol Alphasyn HG oils meet the requirements
recommended by major centrifuge manufacturers for of major marine gearbox manufacturers, including
gear case lubrication. the Ortlinghaus clutch test.
TECHNICAL DATA
Alphasyn HG
Typical Characteristics 100 150 220 320
Density @ 15掳C, kg/ltr 0.845 0.850 0.862 0.862
Viscosity @ 40掳C, cSt 100 150 220 320
Viscosity @ 100掳C, cSt 14.3 19.8 26.7 34.6
Viscosity Index 150 150 150 150
Neutralisation Number 1.5 1.5 1.5 1.5
Flash Point COC, 掳C 270 270 270 286
Flash Point, PMCC, 掳C 240 240 240 244
Pour Point, 掳C -51 -42 -42 -36
Oxidation (KV100 inc鈥?), ASTM D2893 <1% <1% <1% <1%
Steel Corrosion, IP 135B Pass Pass Pass Pass
FZG A/16.6/140, Load Stage 10 10 10 10
FZG A/8.3/90, Load Stage >12 >12 >12 >12
Copper corrosion 1a 1a 1a 1a
Nov 2001
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