2934998836 (=1616533281=1616533251): O.I.S. N-02

The Atlas Copco 2934998836 (=1616533281=1616533251) O.I.S. N-02 air end, is a genuine original air end assembly engineered exclusively for Atlas Copco air compressors. We source this product directly from Atlas Copco (shanghai) Trading Co., Ltd., and every unit you receive is brand new, authentic original stock with complete traceability of its manufacturing and supply chain records.

Product Introduction

An air end acts as the core heart of any rotary screw air compressor. The O.I.S. N-02 air end compresses ambient air to create high-pressure compressed air that powers manufacturing workshops, construction equipment, pneumatic tools, automated production lines, and industrial processing systems. Many industrial facilities rely on continuous compressed air supply to keep daily operations running without downtime. A worn or faulty air end forces factories to pause production, lose output, and face costly emergency maintenance fees. The O.I.S. N-02 air end solves this pain point by restoring your Atlas Copco air compressors back to its factory-rated performance.

Atlas Copco designs this air end with rigorous industrial testing standards. Every finished assembly undergoes performance inspection, leak testing, noise measurement, and quality verification before leaving the factory. As the authorized supply chain channel, we deliver this original air end to global industrial buyers. The product originates in China and follows international packaging and shipping specifications for heavy industrial components. Industrial plant managers, maintenance engineers, and procurement teams choose this air end because it eliminates the risks of mismatched, low-quality alternative assemblies. Genuine original construction ensures stable long-term operation, reduces unplanned shutdowns, and extends the full service life of your Atlas Copco compressor host machine.

Product Specifications

All technical dimensions and ratings come from official Atlas Copco product documentation for part 2934998836, cross-referenced against the superseded part codes 1616533281 and 1616533251.

– Part Name: O.I.S. N-02 Air End
– Primary Part Number: 2934998836
– Superseded Part Numbers: 1616533281, 1616533251
– Brand: Atlas Copco
– Supplier: Sichuan Sekes Mechanical And Electrical Technology Co., Ltd.
– Place of Origin: China
– HS Tariff Code: 8414909090
– Product Length: 800 mm
– Product Width: 640 mm
– Product Height: 450 mm
– Gross Weight: 325 kg
– Selling Price: $8000.00 excluding VAT

This heavy-duty air end maintains precise dimensional tolerances to fit compatible Atlas Copco compressor frames without cutting, drilling or custom modification. The 325-kilogram weight reflects the robust cast housing and precision rotor assembly built for continuous industrial duty cycles. Our team verifies every specification before shipment, so customers receive an air end that matches the official technical drawing for their target compressor model.

Working Principle of O.I.S. N-02 Air End

The O.I.S. N-02 air end uses twin rotary screw rotors to complete air compression. Two matched helical rotors sit tightly inside the cast housing of the air end. The drive motor transfers rotational power to the male rotor, and the male rotor drives the female rotor through precise gear meshing.

When the rotors rotate, large volume cavities open at the air inlet side. Atmospheric air flows freely into these cavities as the rotor turns. The rotors continue spinning and seal off the inlet port. The trapped air moves along the rotor length toward the discharge side. The meshing rotors continuously reduce the internal cavity volume. Reduced volume squeezes the air and raises air pressure steadily.

Lubricating oil injects into the compression chamber during this process. The oil cools compressed air, seals the tiny gaps between rotor profiles, and reduces friction between moving metal surfaces. Once air reaches the designed working pressure, the cavity aligns with the discharge port. High-pressure air flows out of the air end and moves to downstream separators, coolers, and air storage tanks. The whole cycle repeats continuously while your compressor runs.

This compression method delivers smooth, pulse-free compressed air output. The O.I.S. N-02 air end holds extremely tight clearances between rotors. This tight tolerance minimizes internal air leakage and keeps compression efficiency high over thousands of working hours.

Product Advantages

First, this O.I.S. N-02 air end is brand-new genuine original stock sourced directly from Atlas Copco (shanghai) Trading Co., Ltd. You avoid the common risks of second-hand rebuilt assemblies. Rebuilt air ends often suffer from hidden rotor wear, degraded bearings, and inconsistent performance. Our original air end uses brand new bearings, rotor profiles, seals and gaskets straight from the factory.

Second, it offers full part cross-compatibility. One unit replaces three part references: 2934998836, 1616533281 and 1616533251. Maintenance teams only need to order one air end to replace older superseded versions, simplifying spare part inventory management and procurement workflows.

Third, the air end maintains high compression efficiency. Precision machined screw rotors reduce internal backflow. Your compressor consumes less electricity to produce the same volume of compressed air after replacement. This efficiency cuts monthly energy bills for facilities that run compressors 24 hours a day.

Fourth, it delivers stable low-noise operation. Atlas Copco balances every rotor dynamically during manufacturing. Balanced rotors reduce vibration transfer to the compressor frame. Less vibration protects surrounding piping, sensors and motor components and lowers wear on the whole compressor package.

Fifth, the heavy-duty cast housing resists deformation under pressure and temperature cycles. The housing protects internal rotors and bearings from dust, moisture and thermal stress in harsh factory environments. The air end adapts to steady continuous operation in workshops, mining sites, food processing plants and chemical manufacturing facilities.

When You Need to Replace the O.I.S. N-02 Air End

You must inspect your Atlas Copco compressor air end regularly during routine maintenance. Watch for clear warning signs that signal the need for replacement with part 2934998836.

Replace the air end when your compressor cannot reach its rated working pressure, even after you check filters, oil separators and inlet valves. Falling pressure usually means excessive internal leakage from worn rotor profiles or damaged bearing surfaces.

Plan for replacement if you hear loud grinding, knocking or metallic scraping noise coming directly from the compressor host. These sounds indicate failing bearings inside the air end. Delaying replacement risks sudden rotor seizure, which can destroy the whole compressor package.

You also need to replace the air end when oil consumption rises sharply. Increased oil carry-over in compressed air points to worn shaft seals or damaged rotor clearances. Excess oil contaminates pneumatic tools and end products, leading to rejected goods and extra filtration costs.

Other triggers include persistent high discharge temperatures that you cannot resolve by cleaning coolers, repeated air end tripping alarms, or visible oil leaks at the air end shaft. If your air end reaches its maximum recommended service hour limit set by Atlas Copco, arrange proactive replacement during a scheduled plant shutdown. Proactive replacement prevents unexpected breakdown during peak production periods.

Do not continue running a damaged air end. Continued operation can cause catastrophic rotor contact. A catastrophic failure creates longer downtime, higher repair expenses and safety hazards for on-site maintenance staff.

Installation Steps for O.I.S. N-02 Air End

Follow these step-by-step installation procedures to fit the O.I.S. N-02 air end safely onto your compatible Atlas Copco compressor. Always power off the compressor and lock out the main electrical supply before starting work. Release all residual compressed air pressure inside the entire compressor system.

Step 1: Drain all compressor lubricating oil from the old unit. Remove connecting pipes, oil lines, temperature sensors and coupling guards attached to the existing air end. Label every hose and cable connector to simplify reassembly.

Step 2: Disconnect the coupling assembly between the drive motor and the old air end. Remove mounting bolts that fasten the air end to the compressor base frame. Use proper lifting equipment to hoist the heavy old air end out of the compressor cabinet safely.

Step 3: Clean the compressor base, coupling surfaces and pipe flanges completely. Remove old gasket residue, oil sludge and metal debris. Inspect the motor coupling for wear or damage and replace worn coupling components before fitting the new air end.

Step 4: Use certified lifting gear to position the new O.I.S. N-02 air end (part 2934998836) onto the mounting frame. Align the motor and air end coupling carefully. Tighten mounting bolts gradually in a cross pattern to maintain even alignment. Poor alignment creates vibration and shortens bearing life.

Step 5: Fit new gaskets and seals at all flange connections. Reconnect oil supply lines, return lines, pressure sensors and temperature probes following your labeled layout. Double-check all pipe connections to eliminate potential leaks.

Step 6: Refill the compressor with Atlas Copco recommended lubricating oil. Verify oil levels sit within the marked range on the oil sight glass. Rotate the air end manually by hand to confirm no binding or grinding resistance inside the rotor assembly.

Step 7: Reinstall coupling guards and close compressor panels. Restore power supply and perform a no-load test run. Monitor discharge temperature, vibration level, oil pressure and air output for 30 minutes. Stop the unit immediately if abnormal noise or leaks appear. Confirm stable operating parameters before putting the compressor back into full production duty.

Conclusion

The O.I.S. N-02 air end (2934998836, superseded from 1616533281 and 1616533251) serves as the core compression component for Atlas Copco rotary screw compressors. Sourced directly from Atlas Copco (shanghai) Trading Co., Ltd., this brand-new genuine assembly restores your compressor back to factory performance. It delivers reliable compressed air for continuous industrial production while lowering energy waste and emergency maintenance risk.

Understanding its working principle helps maintenance teams spot early faults. Timely replacement and professional installation protect your capital equipment and reduce costly production stops. Industrial buyers can rely on us to supply this original air end with complete technical support and accurate documentation for customs and maintenance records. Whether you complete planned maintenance or resolve an unexpected air end failure, the O.I.S. N-02 air end provides a trusted, high-performance solution for Atlas Copco compressor systems.

Inquiry Now