Atlas Copco IMD300 Rotor Inspection Kit Replacement – 2906073700

Atlas Copco 2906073700 – IMD300 Rotor Inspection Kit

The Atlas Copco 2906073700 (2906-0737-00) is an IMD300 Rotor Inspection Kit designed to support inspection and servicing of the rotor assembly in compatible Atlas Copco oil-free compressor systems.

The kit provides replacement sealing components required when the rotor assembly is opened, inspected or exchanged. Proper sealing is essential after maintenance to prevent leakage and maintain reliable operation of the compressor system.

Atlas Copco’s official catalog specifies a complete kit weight of approximately 198 g.

Working Process:

During normal compressor operation, the IMD300 rotor assembly performs its intended mechanical function continuously. The rotor and its associated sealing components must remain in good condition to maintain reliable equipment operation.

When scheduled maintenance or an inspection is required, the compressor is stopped, isolated and depressurized according to the applicable service procedure.

The rotor assembly is then accessed and inspected for signs of:

• Mechanical wear
• Surface damage
• Contamination
• Seal deterioration
• Abnormal operating condition
• Leakage
• Rotor or bearing-related problems

After inspection, the rotor can be serviced or exchanged as required.

Whenever the rotor assembly is opened, the sealing components supplied in the 2906073700 Rotor Inspection Kit can be replaced during reassembly.

The new O-rings, gaskets and sealing ring restore the required sealing condition between the relevant components.

Once reassembled correctly, the rotor assembly can return to service with the required sealing integrity.

Official Kit Components:

Atlas Copco’s official catalog lists the following components for 2906073700:

• O-ring 92 × 3 – 2 pcs
• Seal Gasket – 1 pc
• Gasket Type 1, 80 × 128 × 2 – 1 pc
• O-ring – 1 pc
• Sealing Ring MD50/100 – 1 pc

The official listed kit weight is 198 g.

Component Functions:

The O-rings provide sealing between mating components and prevent unwanted leakage around the rotor assembly.

The seal gasket provides sealing between relevant stationary mating surfaces during reassembly.

The 80 × 128 × 2 gasket provides a defined sealing interface between the applicable assembly components.

The sealing ring MD50/100 provides additional sealing around the relevant rotor assembly interface.

Together, these components help restore the sealing condition required after rotor inspection or exchange.

Rotor Inspection Cycle:

1. Shutdown: Stop the compressor according to the manufacturer’s procedure.
2. Isolation: Isolate electrical and pressure/energy sources.
3. Depressurization: Ensure the system is completely depressurized.
4. Access: Remove the required components to reach the IMD300 rotor assembly.
5. Inspection: Inspect the rotor and associated components for wear, damage and abnormal conditions.
6. Seal Inspection: Examine the O-rings, gaskets, sealing ring and mating surfaces.
7. Rotor Service: Service or exchange the rotor if required.
8. Seal Replacement: Replace applicable sealing components using the 2906073700 kit.
9. Reassembly: Reassemble the rotor assembly according to the applicable Atlas Copco service instructions.
10. Inspection: Confirm correct positioning and seating of all sealing components.
11. Leak Check: Verify that the reassembled assembly is properly sealed.
12. Restart: Return the equipment to operation after completing all required checks.
13. Performance Verification: Monitor for leakage, abnormal vibration, noise or temperature.

Importance of Sealing Components:

Rotor inspection requires the relevant assembly to be opened and subsequently reassembled.

Reusing old sealing components can increase the risk of leakage because O-rings and gaskets may lose elasticity, become permanently compressed or sustain damage during disassembly.

Replacing the sealing components during reassembly helps restore the original sealing condition.

Correct installation is particularly important because improperly seated seals can result in leakage even when the components themselves are new.

Possible Conditions Requiring Inspection:

Rotor inspection may be required when maintenance personnel identify:

• Abnormal noise
• Increased vibration
• Leakage
• Reduced equipment performance
• Unusual temperature behavior
• Contamination
• Worn sealing components
• Suspected rotor damage
• Bearing-related abnormalities
• Unusual mechanical behavior

The exact inspection criteria depend on the specific IMD300 installation and applicable Atlas Copco service documentation.

Maintenance Procedure:

Before beginning maintenance, stop and isolate the compressor and ensure that all relevant pressure and energy sources have been safely isolated.

Access the rotor assembly according to the applicable Atlas Copco service procedure.

Inspect the rotor, shaft interfaces, sealing surfaces and associated components.

Remove the old O-rings, gaskets and sealing ring carefully.

Clean the relevant mating and sealing surfaces without damaging precision surfaces.

Install the replacement components supplied in the 2906073700 IMD300 Rotor Inspection Kit.

Ensure that:

• O-rings are correctly seated.
• O-rings are not twisted, cut or damaged.
• The seal gasket is correctly positioned.
• The 80 × 128 × 2 gasket is correctly installed.
• The sealing ring MD50/100 is correctly positioned.
• All sealing surfaces are clean.
• The rotor assembly is correctly aligned.
• All retaining components are properly secured.

After reassembly, perform the applicable leak and operational checks.

Restart the equipment according to the manufacturer’s procedure and monitor the serviced assembly for:

• Leakage
• Abnormal vibration
• Abnormal noise
• Unusual temperature
• Correct operating performance

A properly completed rotor inspection and reassembly helps maintain the mechanical integrity and sealing performance of the IMD300 system.

The Atlas Copco 2906073700 IMD300 Rotor Inspection Kit therefore provides the replacement sealing components required to support reliable rotor inspection, servicing and reassembly.

Part Number: 2906073700
Alternative Number: 2906-0737-00 / 2906 0737 00
Brand: Atlas Copco
Official Description: IMD300 Rotor Inspection Kit
Application: IMD300 oil-free compressor system
Kit Type: Rotor inspection/service kit
Official Listed Weight: 198 g
Primary Function: Provides replacement sealing components for rotor inspection and reassembly
Main Components: O-rings, seal gasket, gasket and sealing ring
Service Function: Supports rotor inspection, maintenance and rotor exchange
Main Benefits: Restored sealing performance, reduced leakage risk, reliable rotor reassembly and dependable compressor operation.

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