1616590481 (=9825008481): OFS M-21 AIR END

The Atlas Copco 1616590481 (=9825008481) OFS M-21 Air End stands as a critical component for maintaining the performance and reliability of Atlas Copco oil-free screw compressors. As the heart of the compression system, this air end transforms atmospheric air into high-quality, 100% oil-free compressed air suitable for the most demanding industrial applications.

Product Overview

We supply this genuine air compressor part, sourced directly from Atlas Copco (Shanghai) Trading Co., Ltd. Every unit we deliver is a brand-new, original product. We maintain this critical component in stocked inventory, ensuring rapid availability when your maintenance schedule demands it.

The OFS M-21 air end represents the pinnacle of Atlas Copco oil-free air compressor technology. Engineered with precision-machined rotors and advanced profile designs, this component delivers stable airflow, reduces energy consumption, and minimizes mechanical wear even under continuous heavy-duty operation. Facilities in pharmaceutical manufacturing, food processing, electronics production, and petrochemical operations rely on this air end to maintain Class 0 oil-free air quality standards.

This air end serves as the high-pressure element for Atlas Copco oil-free screw air compressor models. It replaces the older part number 9825008481, representing the latest evolution in Atlas Copco’s oil-free compression technology.

Technical Specifications

Specification	Detail
Part Name	OFS M-21
Part Number	1616590481
Old Part Number	9825008481
Price	$35,000 excl. VAT
Origin	Belgium
HS Code	8414909090
Weight	265 kg
Length	78 cm
Width	47 cm
Height	49 cm
Stock Policy	Stocked
Product Quality	Brand-New Original
Packaging	Wooden Crate

Key Advantages

30% Improvement in Compressor Efficiency
The advanced OFS M-21 rotor profile design optimizes the compression process, delivering measurable efficiency gains over standard configurations. This translates directly into reduced energy costs and a lower carbon footprint for your facility.

45% Extension of Service Life
Precision engineering and premium materials ensure this air end withstands the rigors of continuous industrial operation. The OFS M-21 maintains its performance characteristics over an extended operational lifecycle, delaying the need for costly major overhauls.

40% Reduction in Maintenance Downtime
Superior reliability means fewer unexpected breakdowns and shorter scheduled maintenance windows. When you install a genuine Atlas Copco air end, you invest in operational continuity. Every hour of unplanned downtime saved contributes directly to your bottom line.

100% Oil-Free Air Quality
As a genuine oil-free screw element, the OFS M-21 delivers absolutely oil-free compressed air. This makes it indispensable for industries where air purity is non-negotiable—pharmaceutical production, food and beverage processing, electronics manufacturing, and medical device fabrication.

Genuine Atlas Copco Quality

Every OFS M-21 air end we supply originates directly from Atlas Copco (Shanghai) Trading Co., Ltd. —the authorized distribution channel for genuine Atlas Copco components in the region. This direct sourcing guarantees:

• 100% authenticity – no counterfeits, no gray-market products
• Full factory specifications – every unit meets Atlas Copco’s exacting quality standards
• Complete traceability – we maintain full documentation of the supply chain
• Factory warranty coverage – genuine products carry the manufacturer’s warranty protection

When you purchase from us, you receive the same air end that Atlas Copco installs in their own factory-new compressors—nothing less. This air end serves as a direct replacement for the older 9825008481 model, incorporating the latest design improvements from Atlas Copco’s engineering team.

Installation Guidelines

Proper installation of the OFS M-21 air end is essential for achieving optimal performance and service life. We recommend following these general guidelines:

1. Pre-Installation Preparation

• Verify that the replacement air end matches your compressor model.
• Inspect the wooden crate packaging for any signs of damage during transit.
• Ensure the installation area is clean, well-lit, and has adequate space for handling a 265 kg component.
• Gather all necessary tools, lifting equipment, and replacement seals/gaskets.

2. System Shutdown and Depressurization

• Shut down the compressor completely and lock out/tag out the power supply.
• Depressurize the entire system following the manufacturer’s safety procedures.
• Allow the compressor to cool to ambient temperature before beginning disassembly.

3. Removal of the Old Air End

• Document the orientation and connection points of the existing air end.
• Carefully disconnect all piping, fittings, and electrical connections.
• Use appropriate lifting equipment to remove the old air end—never attempt manual lifting of this 265 kg component.
• Clean all mounting surfaces and inspect for any debris or damage.

4. Installation of the New OFS M-21 Air End

• Position the new air end using proper lifting equipment and align it with the mounting points.
• Secure all mounting bolts to the manufacturer’s specified torque settings.
• Reconnect all piping, ensuring proper sealing at every connection.
• Verify that all electrical connections are secure and correctly oriented.

5. Post-Installation Verification

• Perform a thorough leak check before restarting the system.
• Run the compressor through its startup sequence and monitor for unusual noise or vibration.
• Verify operating parameters (pressure, temperature, flow rate) against factory specifications.
• Document the installation date and serial number for maintenance records.

Note: These guidelines are for reference only. Always consult the official Atlas Copco service manual for your specific compressor model and follow all safety procedures. We recommend having installation performed by qualified Atlas Copco-trained technicians.

Why Choose Us?

Direct Source from Atlas Copco (Shanghai) Trading Co., Ltd. – We do not source from third-party intermediaries or unauthorized distributors. Every OFS M-21 air end we supply comes directly from the official Atlas Copco distribution channel in Shanghai, ensuring complete authenticity and full factory warranty coverage.

• Competitive Pricing – At $35,000 excl. VAT, we offer this genuine air end at a competitive price point without compromising on quality or authenticity.
• Stocked Inventory – Our “Stocked” policy means we maintain inventory levels to support urgent replacement needs. When your compressor goes down, we understand that every hour counts.
• Expert Support – Our team possesses deep technical knowledge of Atlas Copco oil-free compressor systems. We provide knowledgeable guidance to help you select the right components and ensure successful installation.

Ready to Order?

Don’t compromise your compressor’s performance with anything less than genuine. The Atlas Copco OFS M-21 Air End (1616590481) is available now from ACD at $35,000 excl. VAT.

✅ 100% Genuine – Sourced directly from Atlas Copco (Shanghai) Trading Co., Ltd.
✅ In Stock – Ready for immediate shipment
✅ Factory Sealed – Brand-new, never refurbished
✅ Full Warranty – Genuine Atlas Copco factory warranty coverage

Bulk and recurring order inquiries are welcome. We offer flexible shipping arrangements to meet your timeline and location requirements.

More Oil-free Air Ends List

Part Number	Part Name	Order Number
1616635681	O.F.S. Q-21	1616-6356-81
1616635682	O.F.S. Q-22	1616-6356-82
1616635683	STAGE 6 GAS	1616-6356-83
1616635688	OFS Q-21	1616-6356-88
1616716287	O.F.S. Q-27	1616-7162-87
1616630581	O.F.S. O-21	1616-6305-81
1616630582	O.F.S. O-22	1616-6305-82
1616630583	COMPR.ELEMENT	1616-6305-83
1616630588	OFS O-21	1616-6305-88
1616716187	O.F.S. O-27	1616-7161-87
1616590461	O.F.S. M-25	1616-5904-61
1616590463	O.F.S. M-26	1616-5904-63
9825008481	O.F.S. M-21	9825-0084-81
1616590481	O.F.S. M-21	1616-5904-81
1616590482	O.F.S. M-22	1616-5904-82
1616590483	O.F.S. M-23	1616-5904-83
1616590488	OFS M-28	1616-5904-88
1616718787	OFS M-27	1616-7187-87
1616580381	O.F.S. K-21	1616-5803-81
1616580382	O.F.S. K-22	1616-5803-82
1616580383	O.F.S. K-23	1616-5803-83
1616580388	O.F.S. K-28	1616-5803-88
1616718687	O.F.S. K-27	1616-5803-87
1616719480	O.I.S. K-38	1616-7194-90
1616679281	O.F.S. I-41	1616-6792-81
1616747281	O.F.S. I-41	1616-7472-81
1616747282	O.F.S. I-42	1616-7472-82
1616747283	OFS I-02 GAS	1616-7472-83
1616747287	O.F.S. I-47	1616-7472-87
1616679288	O.F.S. I-48	1616-6792-88
1616747288	O.F.S. I-48	1616-7472-88
1616585181	O.F.S. G-21	1616-5851-81
1616585182	O.F.S. G-22	1616-5851-82
1616585183	O.F.S. G-23	1616-5851-83
1616585187	O.F.S. G-27	1616-5851-87
1616677081	ELEMENT COMPR	1616-6770-81
1616677082	O.F.S. E-22	1616-6770-82
1616677083	ELEMENT COMPR	1616-6770-83
1632002980	ELEMENT COMPR Z4 O.F.S.	1632-0029-80
1616550181	O.F.T. K-01	1616-5501-81
1616652781	O.F.T. I-01	1616-6527-81
1616855161	O.F.S. K-25	1616-8551-61
1616710781	OFT E-11	1616-7107-81
1616777381	ELEMENT COMPR	1616-7773-81
1616988381	OFS J-51	1616-9883-81
1616947181	ELEMENT COMPR	1616-9471-81
2236050100	AIR END ATSL-165E 3.7KW 8BAR	2902022201
2236050200	AIR END ATSL-165E 3.7KW 10BAR	2902022202
1616741883	ELEMENT 5.5KW 8 BAR OFSL/E03	2902022204
1616833682	AIREND OFSL D-02/3,7KW-10BAR	2902022211

Inquiry Now