Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 33540 Lubricants for Wind Turbine is divided into 4 parts:
——Part 1: Bearing Greases;
——Part 2: Open Gear Greases;
——Part 3: Gear Oils;
——Part 4: Hydraulic Oils.
This part is Part 3 of GB/T 33540.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the National Technical Committee on Petroleum Products and Lubricants of Standardization Administration of China (SAC/TC 280).
This part is under the jurisdiction of the Subcommittee on Synthetic Grease of National Technical Committee on Petroleum Products and Lubricants of Standardization Administration of China (SAC/TC 280/SC 5).
Lubricants for Wind Turbine - Part 3: Gear Oils
1 Scope
This part of GB/T 33540 specifies the product variety and designation, requirements and test methods, inspection rules and marking, packaging, transportation and storage of gear oils for wind turbine, which adopts synthetic oils as the base by mixing with various types of function additives.
This part is applicable to gear oils for gear transmission system of wind turbine. The gear transmission system includes the main gearbox, yaw reduction gearbox and variable pitch reduction gearbox.
Products described in this part are particularly applicable to wind turbine gearbox of low temperature type.
2 Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 260 Determination of Water Content in Petroleum Products
GB/T 265 Petroleum Products - Determination of Kinematic Viscosity and Calculation of Dynamic Viscosity
GB/T 1690 Rubber, Vulcanized or Thermoplastic - Determination of the Effect of Liquids
GB/T 1995 Petroleum Products - Calculation of Viscosity Index
GB/T 2541 Petroleum Products; Computation Table for Viscosity Indices
GB/T 3141 Industrial Liquid Lubricants - ISO Viscosity Classification
DIN 51819-3 Testing of Lubricants - Mechanical-dynamic Testing in the Roller Bearing Test Apparatus FE8 - Part 3: Test Method for Lubricating Oils, Oblique Axial Ball Bearing
FVA 54/I-IV Procedure for the Investigation of the Micro-pitting Capacity of Gear Lubricants
3 Product Variety and Designation
3.1 Product Variety
This part includes a product variety of gear oils for wind turbines, and its products are classified into three viscosity grades, i.e., 150, 220 and 320, according to GB/T 3141.
3.2 Product designation
The designations of the products in this part are: product name (category) viscosity grade standard No.
Example: gear oils for wind turbine (synthetic) 320 GB/T 33540.3.
4 Requirements and Test Methods
Technical requirements and test methods for gear oils for wind turbine (synthetic) are listed in Table 1.
Table 1 Technical Requirements and Test Methods for Gear Oils for Wind Turbine (Synthetic)
kinematic viscosity after shearing at 40℃, /(mm2/s) Within the viscosity grade NB/SH/T 0845
Cleanlinessc /Grade ≤ 8 DL/T 432
Rubber compatibilityd Report GB/T 1690
a If there is a dispute on the result, it shall be subject to the arbitration according to GB/T 265.
b If there is a dispute on the result, it shall be subject to the arbitration according to GB/T 1995.
c Cleanliness shall be judged according to the measurement method of DL/T 432, and the grading result according to GB/T 14039 may be provided at the time as required by the customer.
d According to the rubber test pieces provided by the customer, both parties negotiate to determine the test conditions and indexes.
5 Inspection Rules
5.1 Inspection classification and items
5.1.1 End-of-manufacturing inspection
End-of-manufacturing batch inspection items include: kinematic viscosity, viscosity index, apparent viscosity (-30℃), pour point, foaming characteristics, water, copper corrosion and cleanliness.
Where raw materials and technological conditions would not present changes which may affect the product quality, the periodic end-of-manufacturing inspection shall meet the following requirements: flash point (opening) shall be determined for every ten lots (those insufficient to ten lots shall be determined annually), and demulsibility shall be determined for every five lots (those insufficient to five lots shall be determined annually); liquid phase corrosion (Method B) shall be determined for every ten lots (those insufficient to ten lots shall be determined annually); oxidation stability, scuffing load capacity (four-ball method), wear resistance (four-ball machine method), scuffing load capacity (FZG visual observation), and shear stability shall be inspected at least once every year.
5.1.2 Type inspection
Type inspection items include all the items specified in the technical requirements of Chapter 4.
Type inspection is carried out under the following conditions:
a) Beginning of production or type approval inspection of new products;
b) Significant changes of raw materials and manufacturing techniques which may affect the product quality;
c) The result of end-of-manufacturing inspection is greatly different to the previous type inspection result.
Foreword II 1 Scope 2 Normative References 3 Product Variety and Designation 4 Requirements and Test Methods 5 Inspection Rules 6 Marking, Packaging, Transportation and Storage
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 33540 Lubricants for Wind Turbine is divided into 4 parts:
——Part 1: Bearing Greases;
——Part 2: Open Gear Greases;
——Part 3: Gear Oils;
——Part 4: Hydraulic Oils.
This part is Part 3 of GB/T 33540.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the National Technical Committee on Petroleum Products and Lubricants of Standardization Administration of China (SAC/TC 280).
This part is under the jurisdiction of the Subcommittee on Synthetic Grease of National Technical Committee on Petroleum Products and Lubricants of Standardization Administration of China (SAC/TC 280/SC 5).
Lubricants for Wind Turbine - Part 3: Gear Oils
1 Scope
This part of GB/T 33540 specifies the product variety and designation, requirements and test methods, inspection rules and marking, packaging, transportation and storage of gear oils for wind turbine, which adopts synthetic oils as the base by mixing with various types of function additives.
This part is applicable to gear oils for gear transmission system of wind turbine. The gear transmission system includes the main gearbox, yaw reduction gearbox and variable pitch reduction gearbox.
Products described in this part are particularly applicable to wind turbine gearbox of low temperature type.
2 Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 260 Determination of Water Content in Petroleum Products
GB/T 265 Petroleum Products - Determination of Kinematic Viscosity and Calculation of Dynamic Viscosity
GB/T 1690 Rubber, Vulcanized or Thermoplastic - Determination of the Effect of Liquids
GB/T 1995 Petroleum Products - Calculation of Viscosity Index
GB/T 2541 Petroleum Products; Computation Table for Viscosity Indices
GB/T 3141 Industrial Liquid Lubricants - ISO Viscosity Classification
GB/T 3142 Lubricants; Determination of Load Carrying Capacity (Four Balls Method)
GB/T 3535 Petroleum Products - Determination of Pour Point
GB/T 3536 Petroleum Products - Determination of Flash and Fire points - Cleveland Open Cup Method
GB/T 4756 Petroleum Liquids - Manual Sampling
GB/T 5096 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test
GB/T 8022 Lubricating oils; Determination of Demulsibility Characteristics
GB/T 11143 Standard Test Method for Rust-preventing Characteristics of Inhibited Mineral Oil in the Presence of Water
GB/T 11145 Standard Test Method for Measurement of Low-temperature Viscosity of Lubricants - Brookfield Viscometer Method
GB/T 12579 Determination of Foaming Characteristics of Lubricating Oils
GB/T 14039 Hydraulic Fluid Power - Fluids - Method for Coding the Level of Contamination by Solid Particles
DL/T 432 Determination of Particulate Contamination in Oil
NB/SH/T 0306 Standard Test Method for Evaluating the Scuffing Load Capacity of Oils (FZG Visual Observation)
NB/SH/T 0845 Viscosity Shear Stability of Transmission Lubricants (Taper Roller Bearing Rig) Shear Stability Test
NB/SH/T 0870 Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)
SH/T 0123 Determination Method of Oxidation Susceptibility of Extreme Pressure Lubricating Oil
SH 0164 Petroleum Products - Rules in Packaging, Storage, Transportation and Acceptance of Delivery
SH/T 0189 Determination Method of Lubricants Wear-resisting Characteristic (Four-ball Machine Method)
DIN 51819-3 Testing of Lubricants - Mechanical-dynamic Testing in the Roller Bearing Test Apparatus FE8 - Part 3: Test Method for Lubricating Oils, Oblique Axial Ball Bearing
FVA 54/I-IV Procedure for the Investigation of the Micro-pitting Capacity of Gear Lubricants
3 Product Variety and Designation
3.1 Product Variety
This part includes a product variety of gear oils for wind turbines, and its products are classified into three viscosity grades, i.e., 150, 220 and 320, according to GB/T 3141.
3.2 Product designation
The designations of the products in this part are: product name (category) viscosity grade standard No.
Example: gear oils for wind turbine (synthetic) 320 GB/T 33540.3.
4 Requirements and Test Methods
Technical requirements and test methods for gear oils for wind turbine (synthetic) are listed in Table 1.
Table 1 Technical Requirements and Test Methods for Gear Oils for Wind Turbine (Synthetic)
Item Quality index Test method
Viscosity grade (GB/T 3141)
150 220 320
Kinematic viscosity /( mm2/s)
40℃
100℃ 135~165
Report 198~242
Report 288~352
Report GB/T 265 or
NB/SH/T 0870a
Viscosity index ≥ 140 150 150 GB/T 1995 or
GB/T 2541b
Apparent viscosity (-30℃) /(mPa•s) ≤ 150,000 GB/T 11145
Pour point /℃ ≤ -40 -40 -33 GB/T 3535
Flash point (opening) /℃ ≥ 220 GB/T 3536
Foaming characteristics (foam tendency /foam stability) /(mL /mL)
Procedure I (24℃) ≤
Procedure II (93.5℃) ≤
Procedure III (after 24℃) ≤ 50/0
50/0
50/0 GB/T 12579
Demulsibility (82℃)
Water in oil (volume fraction)/% ≤
Emulsion/mL ≤
Total separated water /mL ≥ 2.0
1.0
80.0 GB/T 8022
Water (mass fraction) /% ≤ Trace GB/T 260
Liquid phase corrosion (24h) No rust GB/T 11143 (Method B)
Copper corrosion (100℃, 3h) /grade ≤ 1 GB/T 5096
Oxidation stability (121℃, 312h)
Kinematic viscosity growth value at 100℃ /% ≤
Sediment value growth /mL ≤ 4
0.1 SH/T 0123
Scuffing load capacity (four-ball method)
Sintering load (PD)/N (kgf) ≥
Comprehensive wear value ZMZ/N (kgf) ≥
2,450 (250)
441 (45) GB/T 3142
Wear-resisting characteristic (four-ball machine method)
Wear scar diameter (196N , 60min, 54℃, 1,800r/min), /mm ≤ 0.35 SH/T 0189
Anti-micropitting performance test
Failure grade, /grade ≥
Endurance test 10
High grade FVA 54/I-IV
Wear test of FE8 bearing (D-7.5/80-80)
Liquid column wear /mg ≤
Cage wear /mg 30
Report DIN 51819-3
Scuffing load capacity (FZG visual observation) > 12 NB/SH/T 0306
Shear stability (20h)
kinematic viscosity after shearing at 40℃, /(mm2/s) Within the viscosity grade NB/SH/T 0845
Cleanlinessc /Grade ≤ 8 DL/T 432
Rubber compatibilityd Report GB/T 1690
a If there is a dispute on the result, it shall be subject to the arbitration according to GB/T 265.
b If there is a dispute on the result, it shall be subject to the arbitration according to GB/T 1995.
c Cleanliness shall be judged according to the measurement method of DL/T 432, and the grading result according to GB/T 14039 may be provided at the time as required by the customer.
d According to the rubber test pieces provided by the customer, both parties negotiate to determine the test conditions and indexes.
5 Inspection Rules
5.1 Inspection classification and items
5.1.1 End-of-manufacturing inspection
End-of-manufacturing batch inspection items include: kinematic viscosity, viscosity index, apparent viscosity (-30℃), pour point, foaming characteristics, water, copper corrosion and cleanliness.
Where raw materials and technological conditions would not present changes which may affect the product quality, the periodic end-of-manufacturing inspection shall meet the following requirements: flash point (opening) shall be determined for every ten lots (those insufficient to ten lots shall be determined annually), and demulsibility shall be determined for every five lots (those insufficient to five lots shall be determined annually); liquid phase corrosion (Method B) shall be determined for every ten lots (those insufficient to ten lots shall be determined annually); oxidation stability, scuffing load capacity (four-ball method), wear resistance (four-ball machine method), scuffing load capacity (FZG visual observation), and shear stability shall be inspected at least once every year.
5.1.2 Type inspection
Type inspection items include all the items specified in the technical requirements of Chapter 4.
Type inspection is carried out under the following conditions:
a) Beginning of production or type approval inspection of new products;
b) Significant changes of raw materials and manufacturing techniques which may affect the product quality;
c) The result of end-of-manufacturing inspection is greatly different to the previous type inspection result.
Contents of GB/T 33540.3-2017
Foreword II
1 Scope
2 Normative References
3 Product Variety and Designation
4 Requirements and Test Methods
5 Inspection Rules
6 Marking, Packaging, Transportation and Storage
