Industrial Lubricant Selection Guide by Application

How to use this reference

Start with the equipment maker’s specification, not only a machine name or viscosity number. Correct fluid depends on design, load, speed, temperature, lubrication method, seals and environment. The table maps equipment categories to a lubricant family and first checks.

If the OEM names an approved product or performance specification, use the current approved list. Confirm whether it specifies chemistry, viscosity class, performance category, approval or a particular test; these terms do not mean the same thing.

Separate lubricant families

Hydraulic fluids, gear oils, compressor oils, turbine oils, bearing lubricants and open-gear products serve different functions. They can have different additive systems, base stocks and compatibility limits. A shared viscosity grade does not make products interchangeable across equipment types.

Gear oil is formulated for gear contacts, while compressor oil must suit compressor design and discharge conditions. A product that appears close by viscosity can still fail an approval, deposit-control or seal requirement.

Match operating conditions

After confirming the family, check operating temperature and required viscosity at that temperature. Consider startup, ambient changes, load, speed, pressure, contamination, water exposure and relubrication method. These factors affect film formation, oxidation, wear and service intervals.

Do not choose a grade from ambient temperature alone. Use equipment guidance and product viscosity-temperature information for the expected range. Ask suppliers to review conditions outside the published envelope.

Check compatibility before changing

Before switching products, verify compatibility with seals, coatings, metals, filter media and lubricant already in the system. Some systems require clean changeover or flushing. Greases with different thickener systems can be incompatible even when their consistency grades match.

Do not top up with an unknown product or mix chemistries without written guidance. For a large or critical system, use an approved changeover plan, sample the existing charge if appropriate, and document the product introduced.

Apply the equipment map

Use the table as a first-pass map: identify the machine, select its lubricant family, then work through the checks. For hydraulics verify pump requirements; for enclosed gears confirm the gearbox specification; for compressors distinguish rotary-screw from reciprocating designs.

The table does not specify a universal brand, viscosity grade or change interval. Product ranges and approvals can change. Confirm the latest technical data sheet and approval for the exact model and service conditions.

Keep records and monitor condition

Record product, specification, viscosity grade, date, equipment identifier and changeover method. Sampling can detect water, particles, wear metals, oxidation or viscosity change, but limits must be selected for the equipment and oil condition.

If a machine shows abnormal temperature, noise, pressure or wear, investigate the cause rather than changing lubricant by guesswork. Preserve OEM limits and maintenance history when discussing the issue with a supplier.

Request review when needed

Fire-resistant fluids, food-contact equipment, high temperatures, extreme loads, environmental exposure and critical machinery need additional review. Confirm certifications, environmental rules, process restrictions and supplier approvals for those cases.

This reference follows Shell’s application families as an organizing framework. It does not endorse a specific product; the equipment manufacturer remains the authority for the required specification.

Read the source scope

Each row preserves the source designation, units and conditions available for this reference. A value is useful only when the specification basis matches the part, process, instrument or machine under review. If a source does not state a condition, do not assume one that could change the result.

Keep the table and metadata together when saved or shared. If a current controlled supplier document conflicts with this snapshot, check the revision and use the latest applicable specification. This table is a comparison aid, not a substitute for supplier approval.

Verify the application

The table narrows a lookup but does not decide whether a component or process is acceptable. Confirm the drawing, equipment-maker instructions, safety rules, environment and complete operating duty before making a design, inspection or purchase decision.

For critical applications, have the responsible engineer review the selected value and supporting calculation. Record assumptions, material identity, measurement conditions and approvals that govern the final choice.

Keep units and terminology clear

Read column headings before comparing entries. A number can be a limit, reference value, conversion or one condition from a manufacturer catalogue. Do not mix units, standards, grades or measurement modes simply because the values appear comparable.

When converting units, document the factor and rounding. Retain unrounded values during calculations and round only to the precision required by the governing drawing or specification.

Check current documentation

Technical catalogues and standards can be revised. Check the current source before procurement, production release or inspection. Confirm that the cited edition applies to the customer contract and jurisdiction.

This article explains the table structure and key checks. It does not establish compliance or replace a qualified procedure. When information is incomplete, contact the manufacturer or standards body for the controlling document.

Source and scope

Sources: Shell Lubricants for Business application overview; Shell hydraulic fluids guidance; Shell gear oil guidance; Shell compressor oil guidance. Use the source editions and conditions recorded with the table.