Circulating Oils are specially formulated for use in circulating systems, hydraulic systems, enclosed gearboxes, chain drives, compressors, vacuum pumps, mining machinery, machine tools, etc. They are also recommended for hydraulic systems that require oils with moderate anti-wear properties and mild to extreme pressure characteristics. Circulating Oils are a blend of solvent refined base oils, and select anti-oxidant, anti-rust and anti-foam additives. They meet the requirements of very high pressure systems as also of systems operating with high pump speeds. These oils match the requirements of ISO:VG 220 to 460 as well as IS:10522-1983 (Reaffirmed 1993); IS:3098 – 1983 (Reaffirmed 1993); and DIN – 51524 for Hydraulic Oils H and H-L. Higher viscosity grades (Grades 220 to 460) are not covered in Indian Standards (IS) but are fortified with some amount of anti-wear properties to ensure optimum protection and conform to IPSS 1-09-022 and USS 127. The oils also pass Vickers Vane Pump Test. Circulating Oils offer a host of benefits. The oil has high chemical stability to ensure long and trouble-free service life. Its resistance to foaming ensures prompt and efficient functioning. Its film strength and anti-wear properties protect pumps, valves, Cylinders, pistons, etc. from wear, especially between moving parts under heavy load. Its high viscosity index enables operating under wide range of temperature and other conditions and meets the requirements of the hydraulic pump and the designed system. Its excellent demulsibility allows entrained water to settle down. Being highly corrosion resistant, it protects metal parts from rusting and corrosion even in the presence of moisture.

Anti-wear (AW) Circulating Oils are used, with due pressure, to actuate various mechanisms of CNC and special purpose machines. Positive displacement pumps such as axial, piston, vane and gear types are used to develop the required pressure. The moving parts of these pumps are well protected from wear by Divyol AW Circulating Oils, thus ensuring sustained and optimum machine performance. These oils are suitable for high-pressure hydraulic systems, enclosed gear boxes, compressors, chain drives, machine tools and circulation oiling systems. Anti-wear (AW) Circulating Oils are a blend of solvent refined base oils and select anti-oxidant, anti-rust, anti-foam additives. These oils also have excellent demulsibility. Each of the Divyol AW grades conforms to ISO:VG 220 to 460 requirements and performance standards as per DIN 51524 Part I, IS:10522 -1993 and ISO:11158 (HM Fluid). Anti-wearl (AW) Circulating Oils offer maximum protection to pump components, valves, cylinders, pistons and other system internals from wear, rust and corrosion. The oils’ excellent demulsifying quality allows entrained water to settle down. It also provides resistance to foaming to ensure prompt functioning. Longer oil change intervals leads to longer service life of the pumps. Being multipurpose, Divyol AW Circulating Oils also cause a reduction in inventory.

Entro HVI-ZF Plus Super Clean (SC) Oils 46 ZF-SC and 68 ZF-SC are supreme quality anti-wear hydraulic oils specially developed for applications that require super clean oils and are subjected to a wide range of ambient and operating temperatures, or where a small viscosity change with fluctuating temperature is needed. They are also recommended for power transmission systems operating in similar conditions and requiring super clean oils even in environmentally sensitive applications. These oils meet the stringent requirements of modern hydraulic systems using high-pressure, high output pumps and the critical requirements of other hydraulic system components such as high accuracy numerically controlled machine tools and those employing close clearance servo valves. They can be used in hydraulic systems of excavators, cranes and hydrostatic drives subjected to most severe outdoor operating conditions as also for hydraulic systems operating under high pressures and requiring high degree of load carrying capability and anti-wear protection as also those requiring extended oil change intervals. Entro HVI-ZF Plus Super Clean (SC) Oils 46 ZF-SC and 68 ZF-SC are unique blends of severely hydro processed Group II base oils, a highly shear stable polymer and an advanced ash-less additive system to minimize environmental impact in case of an accidental release into the environment. Both these oil grades conform to performance standards of DIN 51524 Part 3 HVLP; AFNOR NFE 48-603 (HV); ISO: 11158 HV; as also of OEMs Poclain, Hitachi, FIVES CINCINNATI (Former MAG IAS, LLC), Eaton Vickers and Denison. Entro HVI-ZF Plus Super Clean (SC) Oils have outstanding thermal, oxidative and hydrolytic stability ensuring consistent performance even through low and high temperatures. Their unique composition enables excellent air-release properties and demulsibility which helps in faster separation of water from oil and resists emulsion formation. Their extremely high viscosity index assures maximum protection to system components at cold start-up as well as high operating temperatures. Their shear stability minimizes viscosity loss over time ensuring “stay-in-grade” performance under high shear conditions. These properties help improve pump and valve performance, increase production capacity and allow extended oil and filter change intervals. They also reduce deposit formation and protect against wear, rust and corrosion, thus maximizing service life of the system.

Entro AW Hydraulic Oils of grades 22, 32, 46, 68, 100 and 150 are specially formulated blends for use on all heavy duty hydraulic applications (both mobile and stationery) that require a high level of wear protection. This product is recommended for all hydraulic pumps, including high-pressure, high-speed vane, gear, axial and radial piston pumps, except pumps containing silver plated component. Besides hydraulic equipment operating under extreme conditions, it is also used for automated machine tools, press, die casting machines, circulating systems and hydraulic control systems. Entro AW Hydraulic Oils conform to performance specifications of DIN 51524 Part II; Eaton Vickers I-286-S, M-2950-S; Denison HF-0, HF-1, HF2; Cincinnati Machine P-68, P-69, P70; and US STEEL 127. Each grade in the Entro AW Hydraulic Oils range has excellent oxidation and thermal stability for effective anti-rust, anti- corrosion and anti wear performance which helps maximize service life of the pump and system components protecting them from the effects of environmental moisture. Its high shear stability minimizes viscosity loss and its filterability prevents filter blockage even in the presence of water. It also has good demulsification property which helps in faster separation of water and resists formation of emulsions. It is compatible rubber seals.