Optigear Synthetic CT 320 NG
Synthetic Industrial Gear Oil
Description
Castrol Optigear™ Synthetic CT 320 NG is Castrol's latest synthetic polyalphaolefin (PAO) gear oil designed to perform
in the most challenging of applications, especially those found in the wind industry. Its high viscosity index coupled with
advanced gear oil additives make it an ideal lubricant for gear boxes where large changes in temperature and humidity
can not be controlled.
Application
Optigear Synthetic CT 320 NG has been formulated specifically for use in wind turbine gear box applications but it can
be used for all types of enclosed gears – including heavy and shock-loaded gears and bearings where EP properties
are required. It is suitable for use in gear boxes where micro-pitting resistance is required and for a wide range of
applications in extreme environments including mining and quarrying, marine applications, and paper production.
Optigear Synthetic CT 320 NG is fully compatible with nitrile, silicone and fluoropolymer seal materials.
Optigear Synthetic CT 320 NG is classified as follows:
DIN Classification is CLP
Optigear Synthetic CT 320 NG meets the requirements of:
DIN 51517 Part 3
ISO 12925-1 CKSMP and CKD
Advantages
ypical Characteristics
Name Method Units CT 320 NG
ISO Viscosity Grade - - 320
Appearance Visual - Amber liquid
Density @ 15°C / 59°F ISO 12185 / ASTM D4052 kg/m³ 860
Kinematic Viscosity @ 40°C / 104°F ISO 3104 / ASTM D445 mm²/s 330
Kinematic Viscosity @ 100°C / 212°F ISO 3104 / ASTM D445 mm²/s 41.3
Viscosity Index ISO 2909 / ASTM D2270 none 180
Pour Point ISO 3016 / ASTM D97 °C/°F -45 / -49
Flash Point, open cup method ISO 2592 / ASTM D92 °C/°F >250 / >482
Water Separation @ 82°C / 180°F (40/37/3) ISO 6614 / ASTM D1401 Minutes <25
Rust Tests - distilled w ater (24 hrs) and synthetic
seaw ater (24 hrs) ISO 7120 / ASTM D665A/B Ratings Pass
Rust Tests - SKF Emcor - distilled w ater and 0.5 %
NaCl solution ISO 11007 / ASTM D6138 Ratings 0/0 and 1/1
Copper Corrosion 3 h @120°C / 250°F ISO 2160 / ASTM D130 Rating 1
FZG Gear Scuffing Test - A/8.3/90 ISO 14635-1 Failure Load Stage >14
FZG Micropitting Tests @ 60°C/140°F and 90°C/194°F DIN 3990-16 (formerly FVA 54) Failure Load Stage/
Micropiting Rating ≥10 / High
Bearing Test FE8 D-7.5/100-80 80 h FAG Stage 1 /
Wear of Rollers, Mw 50 DIN 51819-3 Rating / mg Pass / <5
Bearing Test FE8 D-75/90-70 800 h, FAG Stage 2 /
Wear of Rollers, Mw 50 DIN 51819-3 mod Rating / mg Pass / <5
Bearing Test FAG Stage 4 600 h / Wear of Rollers,
Mw 50 OEM inhouse test Rating / mg Pass / <5
Subject to usual manufacturing tolerances.Optigear Synthetic CT 320 NG
Castrol, the Castrol logo and related marks are trademarks of Castrol Limited, used under licence.
This data sheet and the information it contains is believed to be accurate as of the date of printing. However, to the extent that it is permissible by law to exclude
warranties and representations, no warranty or representation, express or implied, is made as to its accuracy or completeness. Data provided is based on
standard tests under laboratory conditions and is given as a guide only. Users are advised to ensure that they refer to the latest version of this data sheet. It is the
responsibility of the user to evaluate and use products safely, to assess suitability for the intended application and to comply with all applicable laws and
regulations. Material Safety Data Sheets are available for all our products and should be consulted for appropriate information regarding storage, safe handling,
and disposal of the product. Refer to the MSDS, available from our website for further information. No responsibility is taken by either Castrol Australia , BP plc or
its subsidiaries for any damage or injury resulting from abnormal use of the material, from any failure to adhere to recommendations, or from hazards inherent in
the nature of the material. All products, services and information supplied are provided under our standard conditions of sale. You should consult our local
representative if you require any further information.
Castrol Australia Pty Limited - ABN 87 008 459 407 – 717 Bourke Street, Docklands Vic 3008
Technical Advice Line: 1300 557 998 Customer Service: 1300 722 088
http://msdspds.castrol.com
Page: 2/2
When compared to more conventional gear oils Optigear Synthetic CT 320 NG has the following advantages:-
Maximum protection of gears against wear and shock loading, including protection against micro-pitting.
Excellent thermal and oxidative stability provides reliable operation and extended operating life when
compared to mineral oil based products.
High corrosion protection for gears.
Inherently high viscosity index makes the product suitable for operations over a wide temperature range.
Good water separation and demulsification characteristics reduce down time through prolonged lubricant life
and increased equipment reliability.
PAO base provides good compatibility with seals, paints, and mineral oil based lubricantsPage: 1/2
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