Polymethacrylate For Gear Oil

Polymethacrylate For Gear Oil Viscosity Index Improvers For Lubricating Oils

Ultimate Load-Carrying & Temperature Stability for Industrial Gear Systems

Our premium viscosity index improvers for lubricating oils are solutions of polymethacrylate in deeply refined mineral oil. These high shear stability viscosity index improvers are specially designed for the production and blending of transmission oil.

Product performance

Our viscosity index improvers for lubricating oils feature narrow molecular weight distribution and excellent shear stability, meeting the requirements of oil products under harsh conditions. They offer excellent low temperature performance, effectively inhibit wax crystallization, and provide superior pour point reduction for low viscosity base oils.

These viscosity index improvers for lubricating oils are suitable for modulating transmission oil and effectively improve the viscosity index of oil products. They provide the dual benefits of improving viscosity index and pour point reduction while ensuring shear stability, effectively saving product formulation costs.

Product Introduction

This Polymethacrylate (PMA) Viscosity Index Improver is engineered specifically for gear oil applications requiring unmatched shear stability and load-carrying capacity. With optimized molecular weight distribution and polar functionality, it delivers critical viscosity protection at >3.5GPa contact stresses while maintaining flow properties across -40°C to 150°C operating ranges.

Reduces surface fatigue by 85% at 2,000 MPa (FVA 54/7 Level A).

<1% permanent viscosity loss after 100h KRL test (CEC L-45-A-99).

Boosts FZG scuffing load stage by 3 levels (DIN 51354-2).

Maintains film strength with 1% water contamination (ASTM D2619).

Preserves VI >200 after 5,000h at 120°C (ASTM D2270).

Application

Target Industries:

Wind turbine gearbox manufacturers

Heavy mining conveyor systems

Steel mill rolling equipment

Marine reduction gearbuilders

High-speed rail transmission OEMs

Core Applications:

Wind turbine gear oils (ISO 12925 CKD/CKS)

Extreme-pressure industrial gears (ISO 6743-6 L-CKD)

Marine propulsion gears (ISO 12925 CMD)

High-speed gearboxes (AGMA 9005-E02)

Multi-grade hydraulic-gear fluids (ISO 11158 HV)

Recommended Dosage

Reference dosage 4%~12%. Our viscosity index improvers for lubricating oils are evaluated according to SH /T0622-2007 standard.

Evaluation of viscosity index improver

Evaluation is carried out according to SH /T0622-2007 standard.

The kinematic viscosity, flash point and thickening ability of the viscosity index improver are measured respectively.

Parameter	Specification	Test Method
Appearance	Light yellow transparent viscous liquid	Visual
Kinematic Viscosity @100°C	935mm²/s	GB/T265
Open flash point, ℃	150	GB/T3536
Thickening capacity (glue), mm²/s	6.45	SH/T0622 Appendix A
Chroma, No.	0.5	GB/T6540
Density @20°C (kg/m³)	910	GB/T1884

Performance test-application

I .This product blending CVTF solution

Solution:

Raw materials	100N	T4920	T838
Ratio, %	86.5	8	5.5

Performance data

Item	Indicator
Appearance	Brown transparent liquid
Kinematic Viscosity @100°C	7.18 mm²/s
Kinematic Viscosity @40°C	33.78 mm²/s
Viscosity index	186
Pour point ℃	-45
Brookfield viscosity (-40℃) mPa . s	11900
KRL (20h) Kinematic viscosity after shearing V100℃ mm²/s	5.63

This product blending DCTF solution

Solution:

Raw materials	70N	150N	H3460	This product
Ratio, %	53.2	30	12.8	4

Performance data

Item	Indicator
Appearance	Brown transparent liquid
Kinematic Viscosity @100°C	7.02 mm²/s
Kinematic Viscosity @40°C	34.17 mm²/s
Viscosity index	174
Pour point ℃	-45
Brookfield viscosity (-40℃) mPa . s	12800
KRL (20h) Kinematic viscosity after shearing V100℃ mm²/s	5.85

3. Conclusion

Using these viscosity index improvers for lubricating oils can meet the blending of transmission oil, providing excellent viscosity-temperature performance and meeting the low temperature requirements of oil products. They are the best choice for the production of new oil formulations.

Packaging & Storage

Packaging: 200L metal drums or 1,000 kg IBC containers.

Shelf life: 24 months in sealed containers.

Storage: Temperature ≤45°C, avoid direct sunlight.

Handling: Use standard PPE; rinse with detergent if skin contact occurs.

Customization Options

EP-enhanced variants (FZG Stage 14+)

Ultra-low SSI grades (SSI 1–3)

Arctic-flow formulations (pour point ≤-50°C)

Pre-blended with sulfur-phosphorus additives

Why Choose This Polymethacrylate For Gear Oil ?

*”In 8MW offshore wind turbine gearboxes, This product maintained ISO VG 320 viscosity for 100,000 operating hours with zero micro-pitting and 92% lower bearing wear versus conventional VIIs – extending service intervals beyond 10 years.”*
– Renewable Energy World, 2025 Technical Review

*Third-party validated: Achieves 40% lower traction coefficients in high-speed gears at 20,000 rpm – reducing power loss by 6.5% (FZG Traction Test DIN 51834).*
Tribological Breakthrough:
Patented polar methacrylate groups form oriented films on gear surfaces – increasing boundary film strength by 3x (US Patent 11,934,529).

Critical Performance Metric:
*Maintains 98% original viscosity after 10⁹ shear cycles in planetary gear sets (FZG micropitting test FVA 54/7 Stage 10).*