1092114221 (=1092127300): FAN MOTOR

Industrial air compressors generate immense thermal energy during the air compression cycle. Maintaining an optimal thermal equilibrium prevents system overheating, safeguards the air end, and ensures continuous operational efficiency. The fan motor plays a foundational role in this thermal management system by driving the cooling fans that dissipate heat from the oil coolers and aftercoolers.

This technical introduction provides a detailed overview of the genuine Atlas Copco 1092114221 (=1092127300) Fan Motor 3KW 380V 50HZ. We outline its technical specifications, manufacturing heritage, supply chain transparency, and installation protocols to assist procurement managers and maintenance engineers in making informed decisions.

Product Introduction

The Atlas Copco Fan Motor 1092114221 is a high-performance, heavy-duty industrial electric motor engineered specifically for the demanding environments of rotary screw air compressors. Operating at a rated power output of 3KW under a 380V, 50Hz electrical supply, this motor delivers the precise torque and rotational speed required to maintain optimal cooling airflow.

Atlas Copco designs this specific motor under the designation FF-L112S-4 B5. This configuration utilizes a frame size of 112S, a 4-pole electrical design for stable synchronous speed, and a standard B5 flange mounting layout. The B5 flange allows direct, secure mechanical coupling to the fan housing assembly, minimizing vibrational transfer and maximizing drive alignment accuracy.

We provide full transparency regarding the origin and supply chain of this industrial component:

• Manufacturer and Origin: Atlas Copco designs and manufactures this fan motor in Germany, utilizing premium-grade laminations, high-temperature copper windings, and precision bearings to withstand continuous-duty cycles.
• Procurement Pathway: We source this product directly as a brand-new, original genuine part from Atlas Copco (Shanghai) Trading Co., Ltd. This verified procurement channel ensures that the component incorporates the latest factory updates, genuine factory packaging, and full traceable documentation.
• Authorized Supplier: We supply this authentic item globally. As an established distributor of heavy industrial machinery components, we provide full engineering support, verified quality assurance, and dependable global logistics management.

Technical Specifications

Accurate technical data forms the bedrock of engineering precision. The table below outlines the exact physical and electrical parameters for the Atlas Copco 1092114221 Fan Motor.

Product Name	Fan Motor 3KW 380V 50HZ
Primary Part Number	1092114221
Interchangeable / Supersession Part Numbers	1092127300; 1092091622; 1092125100
Motor Model Type Designation	FF-L112S-4 B5
Rated Power Output	3 kW (Kilowatts)
Rated Operational Voltage	380 V (Volts AC)
Electrical Frequency	50 Hz (Hertz)
Number of Electrical Poles	4-Pole Configuration
Mounting Configuration Type	B5 Flange Mount
Country of Manufacture (Origin)	Germany (DE)
Procurement Source Entities	Atlas Copco (Shanghai) Trading Co., Ltd.
Global Supplier	Sichuan Sykes Mechanical And Electrical Technology Co., Ltd.
Harmonized Tariff Code (HS Code)	85015220
Physical Width	26 cm
Physical Height	42 cm
Physical Length	35 cm
Net Weight	32,500 gr (32.5 kg)

Understanding Part Number Supersession

In complex industrial maintenance, tracking part number lineage remains critical. Over time, Atlas Copco optimizes its components to improve energy efficiency, insulation classes, or bearing longevity. The part numbers 1092127300, 1092091622, and 1092125100 serve as direct supersessions for 1092114221.

When your parts manual lists any of these reference codes, they point to the exact same physical envelope, electrical characteristics, and mechanical interface. We cross-references these numbers within our digital inventory management system to guarantee precise physical drop-in compatibility with your existing air compressor cooling deck.

Product Advantages

Investing in a genuine factory-original motor yields clear operational dividends over third-party alternatives:

• Precise Thermal Regulation: The 4-pole motor maintains a stable, continuous RPM, ensuring the cooling fan draws the precise volume of cubic feet per minute (CFM) of air required to cool the compressor oil.
• Strict Tolerance Compliance: Because Atlas Copco constructs this motor in Germany to exact physical dimensions (26 cm x 42 cm x 35 cm), the B5 flange matches the compressor housing perfectly. This eliminates shaft misalignment, which causes premature bearing failure.
• Superior Insulation Standards: The electrical windings utilize premium insulation materials that resist high ambient temperatures inside the compressor cabinet, avoiding thermal breakdown and electrical short-circuits.
• Lower Total Cost of Ownership: Genuine Atlas Copco spare parts eliminate the risk of voltage fluctuations, unexpected motor burnouts, and cascading damage to the compressor’s main Elektronikon controller.

Installation Steps

Only certified industrial electricians or trained mechanical engineers should execute the installation of the 1092114221 fan motor. Follow these steps to ensure safe, proper commissioning:

Step 1: Isolation and Safety Lockout

Isolate the air compressor from the primary electrical grid. Implement standard Lockout/Tagout (LOTO) procedures on the main circuit breaker. Verify the absence of electrical voltage using a calibrated multimeter. Close the air discharge valve and vent all internal pressure from the compressor vessel.

Step 2: Mechanical Disconnection

Remove the protective fan guard panels. Carefully unbolt the fan blade assembly from the motor shaft. Support the weight of the existing 32.5 kg motor using appropriate lifting straps. Unscrew the bolts securing the B5 flange to the cooling chassis.

Step 3: Electrical Terminal Disconnection

Open the motor terminal box. Document the existing wire configuration (typically a star or delta configuration matching the 380V supply). Disconnect the power cables and the grounding wire.

Step 4: Mounting the New Motor

Clean the mating surface of the B5 flange on the compressor chassis. Lift the new genuine 1092114221 motor into position. Align the flange holes and torque the mounting bolts evenly to factory specifications. Reattach the fan blade assembly onto the shaft, ensuring proper clearance from the shroud.

Step 5: Electrical Connection and Rotation Check

Wire the terminal box of the new motor according to the verified 380V scheme. Secure all terminal nuts and seal the conduit entry against dust ingress. Briefly restore power to execute a “jog” test; verify that the motor rotates in the correct direction indicated by the arrow on the fan housing. Reinstall all safety guards before returning the compressor to active service.

Signs Your Compressor Needs a Fan Motor Replacement

Monitor your machinery for these key indicators that indicate your current fan motor requires immediate replacement:

1. Elevated Operational Temperatures: If your compressor frequently triggers high-air-discharge temperature alarms, the fan motor may be failing to maintain rated RPM.
2. Increased Amp Draw: Routine maintenance checks that reveal the motor is drawing current above its rated parameters point to failing internal windings or excessive mechanical friction.
3. Audible Bearing Noise: Grinding, high-pitched squealing, or rhythmic clicking originating from the cooling section indicates bearing degradation inside the motor housing.

Order & Inquiries

We maintain a direct supply line for genuine Atlas Copco 1092114221 (=1092127300=1092091622=1092125100) fan motor. Avoid the costly downtime associated with system failures by keeping critical cooling components on hand. Our technical sales team provides fast quoting, logistics tracking, and compatibility verification for part numbers 1092114221 and 1092127300. Ensure your system operates with the exact equipment designed by the original manufacturer.

Contact us today to secure your authentic factory-direct fan motor.

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