Castrol Machine Oils & Circulating Oils
Castrol machine oils and circulating oils provide reliable lubrication for industrial machinery, bearings and complex circulating systems. They offer excellent oxidation stability, strong water separation and dependable lubrication performance. These properties help reduce wear, extend oil life and improve operational reliability across a wide range of industrial applications.
What are machine oils and circulating oils?
Machine oils, also known as circulating oils, are used to lubricate bearings, spindles and circulating systems in industrial equipment. They ensure reliable lubrication, assist with heat dissipation and support the smooth operation of machinery, especially in continuous processes.
Key properties of Castrol machine oils
Castrol machine oils are formulated using highly refined base oils and provide excellent oxidation stability and water separation properties. This helps prevent emulsion formation and extends oil life. They also offer good air release and low foaming behaviour, supporting stable system performance.
Versatile use in industrial applications
Machine and circulating oils are widely used in paper machines, printing equipment, rolling mills and other industrial systems. They are suitable for both high-speed operations and applications with varying loads.
Bearing and circulating system lubrication
Castrol machine oils ensure reliable lubrication of rolling and plain bearings as well as circulating systems, reducing wear and supporting smooth operation.
Use in different machines and systems
Depending on viscosity, these oils can also be used in spindles, compressors or moderately loaded gear systems where non-additive oils are required.
Viscosity grades and selection
Castrol machine oils are available in a wide range of viscosity grades, including ISO VG 10, 32, 46, 68, 100 up to ISO VG 460, allowing precise selection based on machine requirements and operating conditions.
Your benefits with Castrol machine oils
Castrol machine oils deliver reliable performance, extended service intervals and improved equipment efficiency. They reduce wear, maintain system cleanliness and support consistent operation. Find the right Castrol machine oil for your application and order online today.
ℹ️ Which ISO VG viscosity is the right choice?
The correct selection depends on speed, load and machine design. The following overview provides general guidance.
ISO VG grades and typical applications
Choosing the correct viscosity is essential for the performance and service life of your machinery. The table below helps you select the appropriate machine oil:
| ISO VG | Typical application |
|---|---|
| ISO VG 10 – 32 | Light-duty systems, spindles, precision engineering |
| ISO VG 46 | Hydraulic systems, industrial equipment, standard applications |
| ISO VG 68 | Bearings, circulating systems, medium-duty machinery |
| ISO VG 100 – 220 | Heavily loaded machinery, circulating lubrication systems |
| ISO VG 320 – 460 | Heavy-duty industrial equipment and slow-running systems |
