HomeQuerySite Map   

 
 
 
Synthetic Refrigeration Lubricants - NYCOLUBE 70xx Series 


NYCOLUBE 70xx series are synthetic lubricants based on neopolyol esters.

They have been designed specifically for use in refrigeration systems working with hydrofluorocarbon as cooling fluid, the traditional (R134a, R404A, R407C, R410A, R507, R23 etc…) mineral oils and alkyl benzene based lubricants being not compatible with these coolants.

Their excellent thermal and hydrolytic stability, their miscibility at low temperature with HFC and their very good lubricity are providing excellent performance levels and energy efficiency to the refrigeration systems.

NYCOLUBE 70xx are available in several grades of viscosity to suit a wide range of applications. Other grades can be developed to meet the requirements of more specialised refrigeration systems
Summary of NL70xx Series
Designation ISO VG Specifications
    Viscosity @ 40°C mm2/s Viscosity @ 100°C mm2/s Viscosity Index Acid Number mg KOH/g
 		 Pour Point Flash Point COC Water content ppm
 		 Main applications
NL 7010 15

16.0

3.7

 114 0.02 < -60 236 < 50 ppm Refrigeration compressors working with HFC refrigerant
Reciprocating for the viscosity grade up to 68.
Screw compressor for the higher viscosities grades.
NL 7020 22 22 4.6 126 0.02 -57 246 < 50 ppm
NB 7450 22 19.8 4.3 129 0.01 -63 258 < 50 ppm
NL 7030 32 32 5.85 127 0.02 - 57 254 < 50 ppm
NL 7040 46 46 7.25 119 0.02 -57 254 < 50 ppm
NL 7050 68 68 9.1 109 0.02 - 48 262 <50ppm
NL 7060 100 95 11 98 0.01 - 30 270 <50ppm
NL 7471 150 150 16.0 112 0.05 - 30 275 <50ppm
NL 7075 170 174 15.7 91 0.02 -30 276 <50ppm
NL 7481 220 232 23.3 124 0.06 -30 270 <50ppm
                  Jun 05 – E2

Miscibility with R134a

The miscibility curves of NL7020 to NL7060 are shown below. In the areas below the curves, the lubricant and the coolant are two separate phases. In the areas above the curves, the lubricant and the coolant are totally miscible.