Product Overview

The Ingersoll Rand 47572176001 39218193 High Temperature Grease is a maintenance lubricant used for compatible equipment applications where bearing lubrication must be maintained under elevated operating temperatures. The part number 39218193 is identified as Ingersoll Rand high-temperature grease and is associated with motor bearing lubrication in applicable compressor configurations.

Motor bearings operate under continuous mechanical loading and generate heat through friction. The grease between the rolling elements and raceways helps reduce direct metal-to-metal contact, limit wear, and protect bearing surfaces during operation. As temperature increases, lubricant performance becomes particularly important because excessive heat can accelerate oxidation, change grease consistency, and shorten the effective lubrication interval.

In compressor maintenance, the correct grease is important when servicing electric motor bearings. A lubricant that is incompatible with the existing grease or bearing requirements may cause deterioration, poor lubrication, or premature bearing failure. Using the specified lubricant helps maintain the intended lubrication conditions for the equipment.

The 39218193 reference is particularly relevant to certain Ingersoll Rand compressor motor applications. Its suitability depends on the motor’s lubrication specification and the bearing arrangement being serviced. It should not be treated as a universal lubricant for every compressor bearing, gearbox, air end, or pneumatic component.

For example, during scheduled maintenance on an industrial compressor, a technician may inspect the motor bearings and replenish grease according to the prescribed service interval. The selected grease must match the motor manufacturer’s requirements, including the required lubricant grade and quantity. Excessive greasing can also create problems by increasing bearing temperature and resistance.

The product is intended for maintenance rather than as a permanent replacement for worn mechanical components. If a bearing shows excessive clearance, damaged raceways, abnormal noise, or signs of overheating, lubrication alone may not resolve the underlying problem. Inspection of the bearing and its operating conditions remains part of a sound maintenance procedure.

Technical Specifications

Product Features

• High-temperature lubrication: Supports bearing lubrication in applications where operating temperatures make lubricant selection important.
• Motor bearing maintenance: Used in specified Ingersoll Rand motor applications requiring the corresponding grease reference.
• Wear reduction: Helps maintain a lubricating film between bearing contact surfaces.
• Friction management: Reduces direct surface contact when applied in the correct quantity and under suitable operating conditions.
• Maintenance-oriented supply: Provides a dedicated lubricant reference for service and replacement planning.
• Equipment-specific compatibility: Supports maintenance practices based on the motor or compressor lubrication specification.
• Bearing protection: Helps limit wear associated with inadequate lubrication when the grease is correctly selected and applied.
• Routine service integration: Can be incorporated into planned motor bearing maintenance procedures.
• Lubricant identification: The 39218193 part number helps distinguish this grease from other lubricants used in compressor systems.
• Support for continuous operation: Appropriate lubrication helps maintain bearing operating conditions in equipment that runs for extended periods.

Working Principle

Grease lubricates a bearing by forming a film between the rolling elements and their contact surfaces. This film helps reduce friction and wear while supporting the bearing under its intended mechanical load.

Grease Application → Bearing Contact Surfaces → Lubricating Film → Reduced Friction and Wear

When the motor operates, its shaft rotates within the bearing assembly. The rolling elements move between the inner and outer raceways, and the lubricant helps separate the contacting surfaces. The grease also contributes to protecting bearing surfaces from corrosion and contamination, depending on the formulation and operating environment.

Temperature affects grease performance. Excessive heat can accelerate lubricant degradation and alter its consistency, while insufficient or unsuitable grease can lead to increased friction and wear. The selected lubricant must therefore match the bearing design, operating temperature, rotational speed, load, and the manufacturer’s lubrication requirements.

The correct quantity is equally important. Too little grease can leave parts of the bearing inadequately lubricated. Too much grease can increase churning losses and operating temperature, particularly in high-speed bearings. Maintenance personnel should follow the prescribed quantity and relubrication interval rather than applying grease based only on visual appearance.

The 39218193 grease is associated with specified Ingersoll Rand motor bearing applications. Its role is to support the lubrication conditions required by those applications, not to correct mechanical damage or replace other lubricants used in separate compressor circuits.

Role in a Compressor Motor Lubrication System

The 39218193 High Temperature Grease is used at designated lubrication points where the equipment specification calls for this grease. In an electric motor, it supports the bearing assembly rather than the compressor’s compressed-air or circulating-oil circuit.

Specified Grease → Motor Bearing → Rolling Elements and Raceways → Lubricated Bearing Operation

Industrial Applications

Installation and Maintenance

1. Verify the lubricant reference: Confirm that part number 39218193 is specified for the motor or bearing assembly being serviced.
2. Prepare the equipment safely: Stop the equipment, isolate the electrical supply, and follow the site’s lockout and tagout procedure.
3. Identify the lubrication point: Locate the designated bearing grease fitting or lubrication access point according to the motor maintenance instructions.
4. Review the service requirements: Establish the required grease quantity and relubrication interval for the specific bearing arrangement.
5. Inspect the surrounding area: Remove dirt and contamination from the grease fitting before connecting the application equipment.
6. Check grease compatibility: Avoid mixing different grease formulations unless their compatibility has been established for the application.
7. Apply the specified quantity: Introduce grease according to the prescribed maintenance procedure without overfilling the bearing housing.
8. Inspect the bearing condition: Check for abnormal noise, excessive temperature, vibration, or other signs of mechanical wear.
9. Maintain clean handling practices: Keep the grease and application tools free from dust, moisture, and other contaminants.
10. Restore the lubrication fittings: Reinstall plugs or fittings and confirm that the lubrication point is properly secured.
11. Check operation after servicing: Restart the equipment under the approved procedure and observe bearing temperature, noise, and vibration.
12. Record maintenance details: Document the grease reference, quantity applied, service date, bearing condition, and any abnormal observations.

Related Components

Recommended Related Models

Key Advantages

• Provides a dedicated grease reference for compatible motor bearing maintenance.
• Supports friction and wear control at lubricated bearing surfaces.
• Helps maintain prescribed lubrication conditions in applicable compressor motor installations.
• Fits into planned maintenance and motor servicing procedures.
• Supports consistent lubricant identification for maintenance inventory management.

Technical FAQs

Where is Ingersoll Rand 39218193 High Temperature Grease used?

Part number 39218193 is associated with specified Ingersoll Rand motor bearing applications. Its use should follow the lubrication requirements of the particular motor and bearing arrangement.

Can this grease be used for every bearing inside a rotary screw compressor?

No. Compressor motors, air ends, gearboxes, and other assemblies can have different lubrication requirements. The grease should only be used at lubrication points that specify this product or an established compatible equivalent.

Why is the amount of grease important during motor maintenance?

Insufficient grease can leave bearing contact surfaces inadequately lubricated, while excessive grease can increase friction and operating temperature. Applying the specified quantity helps maintain the intended bearing operating conditions.

What should be checked if a motor bearing remains hot after greasing?

Check for overgreasing, incorrect lubricant selection, bearing damage, misalignment, excessive mechanical loading, and inadequate cooling. Persistent overheating may indicate a mechanical problem that requires further inspection rather than additional grease.