Synolex Sibera S1 NR 46

Sibera S1 NR 46 – Refrigeration Compressor Oil

Product Overview

Synolex Sibera S1 NR 46 is a refrigeration compressor lubricant for circuits requiring the specified oil family and ISO VG 46 grade. In refrigeration service, the lubricant must perform its mechanical task inside the compressor while working within a circuit that also contains refrigerant. Oil may travel away from the compressor before returning through the system. This makes compressor lubrication, oil return and the temperature conditions of the refrigeration circuit closely connected. The product is selected for that complete operating environment.

Product Identification and Grade

Key Features and Benefits

1. Lubrication of the compressor mechanism

The oil film supports moving contacts within the compressor, including the bearings and other lubricated surfaces identified by its design. The correct grade allows the oil requirement to be matched to the machine rather than treating all refrigeration compressors as mechanically identical.

2. Attention to oil return

Oil that leaves the compressor must be managed by the circuit so that the compressor retains an adequate supply. Pipe arrangement, operating load and separation equipment can all influence this process. Lubricant selection therefore takes oil return into account alongside the needs of the internal moving parts.

3. Selection for the actual refrigerant

The refrigerant is part of the lubricant operating environment. Synolex Sibera S1 NR 46 should be matched to the specified refrigerant and compressor combination, including any restrictions on the oil code. A shared viscosity number does not make two refrigeration oils suitable for the same circuit.

4. Consideration of low-temperature operation

The cold end of a refrigeration circuit can present conditions very different from those at the compressor discharge. Oil behaviour through that temperature range matters to circulation and return. Product selection should use the operating conditions of the complete installation, including the lowest relevant circuit temperature.

5. Controlled charging and replenishment

A clearly identified product helps service personnel maintain the intended lubricant in the circuit. Accurate charging is especially important where oil remains in separators, evaporators or pipework. Use the specified total charge and account for retained oil when replacing components or servicing the system.

6. A practical basis for system servicing

Oil condition can provide useful information alongside compressor temperature, level and operating history. Recording the refrigerant, exact oil designation and amount charged gives future service work a reliable starting point. It also reduces uncertainty when the same site operates several different refrigeration systems.

Applications

The application of Synolex Sibera S1 NR 46 is determined by the compressor and refrigerant together. Cold storage, process cooling and other refrigeration duties can operate at different temperatures and load patterns. The machine instructions and exact refrigerant designation should establish the oil requirement before the product is charged. The family-specific information below narrows this application further.

• Refrigeration compressors whose required lubricant matches this product family.
• Industrial or commercial refrigeration circuits with a confirmed refrigerant and oil pairing.
• Oil replenishment during scheduled compressor and circuit servicing.
• Component replacement or circuit conversion under the approved service procedure.

Product-Specific Application

This product belongs to the refrigeration-compressor range. Its grade is only one part of the selection: the refrigerant designation, compressor design and operating-temperature range must also match the lubricant requirement. Keep the complete oil code on the service record, particularly when one site uses several refrigeration systems. The circuit may retain oil outside the compressor, so charging and conversion work should consider the whole installation. The intended duty is refrigeration lubrication with a defined refrigerant pairing, rather than universal compatibility with every refrigerant or compressor.

Viscosity and Grade Selection

The ISO VG 46 designation identifies the nominal viscosity class at the 40°C reference temperature. It is a grade reference, not a measured typical property for an individual batch and not the maximum operating temperature. This grade is used as a defined viscosity reference within the product family. Its suitability depends on the oil requirement of the specific equipment, not on the popularity of the grade. As oil temperature changes, its viscosity changes too. The operating requirement therefore includes both starting conditions and the temperature reached during normal service. Use the current product data sheet to review the actual viscosity and any other properties required for the application. A different series with the same grade can still have a different intended duty. Keep the full product designation when comparing alternatives or placing an order, and use the equipment specification to decide whether a neighbouring grade is appropriate.

Performance in the Application

Refrigeration oil does not operate in isolation from the rest of the system. The circuit can move between start-up, steady operation, unloading and shutdown, each with a different distribution of oil and refrigerant. A satisfactory oil level at one operating state may not explain what happens during another. For this reason, assessment should cover normal working conditions and the established service procedure rather than only the appearance of a fresh oil sample. Where the equipment has an oil separator or a separate oil-management arrangement, those components must remain functional. The lubricant choice and the mechanical oil-return system work together.

Handling and Service

Keep the container tightly closed between uses and use dry, clean charging tools. Follow the specified evacuation and charging procedure for the circuit. Measure the quantity added and consider oil retained outside the compressor. After service, check oil level and return under stable operating conditions. A falling compressor oil level should be investigated in relation to the entire circuit, including oil retained elsewhere.

Store the product in its original labelled container in a clean, covered area. Close the container after dispensing and use dedicated, clean transfer equipment. Protect the product from water and debris and keep batch identification legible. Follow the safety data sheet for handling and spill management, and manage used product through the applicable collection arrangements.

Why Choose This Product?

Choose Synolex Sibera S1 NR 46 for the refrigeration duty in which the compressor and refrigerant call for this oil. It brings the mechanical lubrication task and the circuit oil-return requirement into one selection. The result sought is an adequately lubricated compressor operating within a well-managed refrigeration system.

Product Selection and Ordering

For product selection or an order, provide the complete Synolex designation, the equipment or process application and the quantity required. Where a replacement is being considered, include the current lubricant name and the relevant equipment requirement. This allows the proposed product to be compared on application and documented properties. The current technical data sheet governs numerical specifications and any formal approvals. The comparison section below retains the product references and their qualifications, so that a potential alternative can be reviewed in its proper technical context.

Similar Products (Equivalent Matching)

The entries below support technical comparison. A documented comparator does not establish an automatically approved replacement. Conditional alternatives require the stated differences to be resolved. A family-level lead does not verify the exact grade, and the absence of a verified entry does not mean that no product exists in the market.