Number:
32#, 46#, 68#
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- Product Description
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| Product Overview
The ester-based hydraulic fluid series is produced by reacting neopentyl polyol with long-chain unsaturated fatty acids or dicarboxylic acids, followed by a specialized refining process. It is particularly well suited as a base oil for fire‑resistant (HFDU) or biodegradable (HEES) hydraulic fluids.
| Product Features
It has a high flash point, a high fire point, and excellent flame‑retardant properties, which help reduce the likelihood of ignition when exposed to hot metals, electrical sparks, open flames, or in the event of hydraulic line rupture or oil leakage.
Safe to use. It exhibits a high biodegradation rate; according to the (ECL-3)-T82 test, the biodegradable fraction of this series of esters exceeds 90%.
- High viscosity index, wide operating temperature range.
- Good lubricity
- Excellent corrosion and rust resistance
- Excellent demulsification and anti-foaming performance
- Excellent thermal stability, extending oil-change intervals.
- Biodegradable and environmentally friendly.
- It does not release toxic gases upon contact with tool surfaces under high-temperature conditions.
| Compliant with standards
ILVA CRS/T CM425
Hydraulics
MANNESMAN REXROTH RD90221/05.93
SCHEFF
VIIth Report of Luxembourg-HFOU
| Precautions for Use
When using this ester‑based hydraulic fluid, the mineral oil content in the system should be less than 5%; when replacing water‑based fire‑resistant hydraulic fluids, the water content in the system should be below 0.2%; and when substituting for phosphate esters, compatibility and seal‑material compatibility must be carefully evaluated.
| Product Specifications
Project 32# 46# 68# Analytical method Appearance Uniform and transparent Uniform and transparent Uniform and transparent Visual estimation Kinematic viscosity (40°C, mm²/s) 33.55 45.72 69.92 GB/T265 Kinematic viscosity (100°C, mm²/s) 7.25 9.48 12.22 GB/T265 Viscosity Index 175 191 183 GB/T1995 Flash Point (Open Cup) / °C 270 310 315 GB/T3536 Flash point/°C 300 335 350 GB/T3536 Pour point/°C -45 -40 -40 GB/T3535 Acid value (expressed as KOH, mg/g) 0.32 0.50 0.50 GB/T4945 Density (20°C) / (kg/m³) 930 918.2 923.5 SH/T0604 Moisture (mass fraction) / % Trace Trace Trace GB/T260 Mechanical impurities (mass fraction) / % 0.002 0.002 0.003 GB/T511 Iodine value / (g/100g) 86 85 87 GB/T5532 Saponification value / (mg KOH/g) 177 179 192 GB/T8021 Hydroxyl value/(mg KOH/g) 5 7.5 8 GB/T7384 Air release value (50°C)/min 1.2 4.5 4.5 SH/T0308 Foaming (tendency/stability) / (mL/mL) at 24°C / 93°C / after 24 hours at 24°C 20/0 / 20/0 / 20/0 20/0 / 30/0 / 20/0 30/0 / 30/0 / 30/0 GH/T12579 Anti-emulsification performance (40-37-3)/min (54°C) 10 15 18 GH/T7305 Other recommended apps
Flame-retardant hydraulic fluid As high as 98% Steel plate rolling Up to 60% higher Cutting and Grinding – Oil-Based 5-25% Cutting and Grinding – Water-Based 5-75% Drawing and Stamping – Oil-Based 5-25% Wire drawing and stamping – water-based 5-75% High-temperature biodegradable rubber oil As high as 98%
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