MOLYKOTE 33 Medium Silicone Bearing Grease

Product Overview

MOLYKOTE 33 Medium is a silicone-based lubricating grease designed for lightly loaded rolling and plain bearings and other mechanical components operating across a wide temperature range. Formulated with silicone oil and a lithium soap thickener, it provides lubrication for precision mechanisms and equipment exposed to very low temperatures.

With a stated service temperature range of -73°C to +180°C, and intermittent operation up to +204°C according to the supplied product information, MOLYKOTE 33 Medium is suitable for evaluating applications in refrigeration equipment, cold rooms, freezer conveyors and selected instruments. Its silicone-based formulation also offers compatibility with many plastics, rubbers and elastomers, although the specific material grade and operating conditions should always be checked before use.

Key Features and Benefits

• Extreme Low-Temperature Performance: Designed for applications operating at temperatures as low as -73°C.

• Wide Service Temperature Range: Stated operating range from -73°C to +180°C, with intermittent use up to +204°C, subject to manufacturer confirmation.

• Silicone-Based Formulation: Uses silicone oil with a lithium soap thickener.

• Bearing Lubrication: Suitable for lightly loaded rolling and plain bearings.

• Precision Mechanism Lubrication: Can be considered for selected small motors, meters and measuring instruments.

• Plastic and Rubber Compatibility: Compatible with many plastics, rubbers and elastomers, subject to material-specific testing.

• Cold-Environment Applications: Suitable for evaluating lubrication requirements in freezers, refrigerators and cold-room conveying systems.

Technical Specifications

• Product Name: MOLYKOTE 33 Medium

• Product Type: Silicone-Based Bearing Grease

• Base Oil: Silicone Oil

• Thickener: Lithium Soap

• NLGI Grade:2

• Base Oil Viscosity: 76 cSt at 40°C, as supplied

• Color and Appearance: Off-White to White

• Service Temperature Range: -73°C to +180°C, as supplied

• Intermittent Temperature: Up to +204°C, as supplied; verify the conditions in the current manufacturer TDS

• Primary Functions: Bearing Lubrication, Low-Temperature Lubrication, Friction and Wear Reduction

• Typical Applications: Lightly Loaded Bearings, Refrigeration Equipment, Precision Instruments and Control Mechanisms

Note: Confirm the viscosity, temperature limits and other specifications against the current manufacturer technical data sheet (TDS) for the exact grade and regional product version.

Typical Applications

Rolling and Plain Bearings

Suitable for evaluating lightly loaded anti-friction bearings and plain bearings where silicone-based lubrication and low-temperature performance are required.

Refrigeration and Cold-Storage Equipment

Can be considered for selected freezers, refrigerators, cold-room conveyors and freezer cart casters operating in low-temperature environments.

Precision Instruments and Small Mechanisms

Suitable for evaluating applications involving electric clock motors, meters, measuring devices and other precision mechanisms that require consistent lubrication.

Control Cables and Operating Mechanisms

May be used for compatible control cables and mechanical components where the grease meets the equipment manufacturer's lubrication and material requirements.

Optical and Photographic Equipment

Can be considered for selected optical or photographic mechanisms, provided the grease is compatible with the materials and does not contaminate sensitive optical surfaces.

Plastic, Rubber and Elastomer Components

Its silicone-based formulation is compatible with many plastics, rubbers and elastomers. However, compatibility varies by material grade, additives, stress and exposure conditions. Test the exact materials before production use.

Material Compatibility and Limitations

Plastics and Elastomers

Although the supplied information describes compatibility with most plastics, rubbers and elastomers, no universal compatibility should be assumed. Verify the exact polymer, operating temperature and exposure conditions before use.

Load and Application Conditions

MOLYKOTE 33 Medium is described for lightly loaded mechanical components. Confirm suitability for heavily loaded bearings, high-speed mechanisms or applications with specific wear and service-life requirements before selecting the product.

Temperature Limits

The stated intermittent temperature of +204°C should not be treated as a continuous service rating. Consult the current manufacturer TDS for the permitted exposure duration and conditions.

Application and Handling

• Clean the bearing or contact surfaces before applying the grease.

• Apply an appropriate quantity according to the equipment manufacturer's instructions.

• Avoid overfilling precision bearings and small mechanisms.

• Prevent contamination of optical surfaces, electrical contacts and other sensitive components.

• Do not mix with other greases unless compatibility has been confirmed.

• Refer to the current technical data sheet (TDS) and safety data sheet (SDS) for application, storage and handling guidance.

Why Choose MOLYKOTE 33 Medium?

MOLYKOTE 33 Medium combines silicone-based lubrication with a lithium soap thickener for selected bearings and precision mechanisms that must operate in very cold environments. Its broad stated temperature range and compatibility with many plastics and elastomers make it worth evaluating for refrigeration systems, cold-room equipment, instruments and mixed-material assemblies.

Before selecting the product, confirm the operating temperature, bearing load, speed, material compatibility and equipment manufacturer's requirements.

Important: Verify the exact product grade, viscosity, operating temperature range and intermittent temperature limits against the latest official manufacturer TDS and SDS before publishing technical claims.