1616711781: OFT H-11 | ATLAS COPCO AIR END

The Atlas Copco OFT H-11 air end, identified by the genuine part number 1616711781, forms the precision-engineered heart of Atlas Copco oil-free ZR/ZT series air compressors. We supply this component as a brand-new, original, factory-genuine unit sourced directly from Atlas Copco (Shanghai) Trading Co., Ltd., manufactured in Belgium, and imported under the customs tariff code 8414909090. Because we sell only the authentic Atlas Copco product, you receive the exact rotor geometry, coating thickness, and clearance specifications that Atlas Copco engineers designed — tolerances that generic or rebuilt copies simply cannot reproduce.

What is Air End?

An air end is the compression stage inside your air compressor: the twin intermeshing rotors that actually produce the compressed air your plant depends on. When this core component wears out, you lose pressure, efficiency, and output. Replacing it with a genuine OFT H-11 restores your machine to factory performance and protects the Class 0 oil-free air quality your process demands.

How the 1616711781 Air End Works

The OFT H-11 operates on the rotary tooth principle inside an oil-free housing. As the male and female rotors rotate in opposite directions, they trap air between their lobes and the chamber wall. Each rotation progressively reduces the volume of the trapped pocket, compressing the air to your required discharge pressure. Because the compression chamber contains no oil, the machine never injects lubricant into the airstream — the rotor coating and labyrinth seals handle sealing and separation instead.

The compressor’s electric motor drives the rotors through a coupling. Air enters through the suction port, gets compressed in stages through the intermeshing rotor clearances, and exits through the discharge port at the designed pressure and flow. The design keeps friction low, heat manageable, and output steady, which is why oil-free tooth elements dominate industries such as food and beverage, pharmaceuticals, semiconductors, and electronics manufacturing, where any oil trace would ruin the final product.

Product Specifications

We present the key physical and commercial parameters in plain terms so you can verify compatibility before you buy:

Specification	Value
Product Name	OFT H-11
Part Number	1616711781
Manufacturer	Atlas Copco
Supplier	Sichuan Sekes Mechanical and Electrical Technology Co., Ltd.
Country of Origin	Belgium
Tariff Code	8414909090
Width	400 mm
Height	300 mm
Length	300 mm
Weight	53 kg
Price	USD 8,000.00 (excl. VAT)

Each unit arrives as a brand-new, original Atlas Copco part with full traceability. We do not supply remanufactured, refurbished, or imitation cores. When your order references 1616711781, you receive the exact part Atlas Copco designed for your oil-free compressor family.

Product Advantages

Choosing a genuine Atlas Copco OFT H-11 air end delivers measurable benefits over aftermarket or rebuilt alternatives:

• Authentic Class 0 air quality. Atlas Copco applies a precisely controlled rotor coating with a specific layer thickness. This coating, combined with labyrinth air seals, completely isolates the oisystem from the compressed-air path. A genuine element keeps oil contamination at zero, which protects your products, your production line, and your brand reputation.
• Factory-matched efficiency. The rotor profile, tip clearances, and tooth meshing gaps are machined to Atlas Copco’s exact design standards. You maintain the original energy consumption per cubic meter of air, so your power bills do not creep up after a repair.
• Long service life and reliability. Atlas Copco engineers the rotors from high-grade steel with durable surface treatments. A genuine air end resists wear, runs smoothly, and sustains full output for many years of continuous duty.
• Perfect compatibility. Because the OFT H-11 matches the original mounting dimensions, couplings, and air ports, your maintenance team installs it without modification, shims, or adapter plates.
• Compliance and traceability. You gain a documented, genuine part with a clean supply chain, which simplifies maintenance records, audits, and warranty claims.

When to Replace the Air End

You should replace the air end when it no longer delivers the performance your process requires. Watch for these clear signs:

1. Falling discharge pressure or flow. When the machine cannot hold its rated pressure, the rotors are likely worn.
2. Rising energy consumption. A worn element draws more power to produce the same air, and your electricity cost increases.
3. Unusual noise or vibration. Grinding, rattling, or excessive vibration signals bearing or rotor damage.
4. Visible damage or coating loss. Physical impact, overheating, or foreign-object damage compromises the sealing surface.
5. Excessive running hours. Atlas Copco schedules air-end replacement at defined service intervals; if your element has exceeded its recommended life, schedule a replacement before failure interrupts production.

Replacing proactively costs far less than an unexpected breakdown, which can halt your entire line, spoil in-process material, and force expensive emergency repairs.

Installation Steps

We guide you through a clean, safe installation:

1. Isolate and depressurize. Switch off the compressor, lock out the power supply, and fully vent the system pressure. Confirm zero pressure before you touch any component.
2. Drain and prepare. Follow the manual to drain fluids and disconnect the inlet, discharge, and cooling connections attached to the old element.
3. Remove the old air end. Unbolt the element from its frame, disconnect the coupling, and carefully lift it out using appropriate rigging for its 53 kg weight.
4. Clean the mounting surfaces. Inspect the frame, alignment faces, and coupling bores, and clean away any debris or old gasket material.
5. Fit the new OFT H-11. Lower the genuine element into position, align the coupling and mounting holes, and torque all fasteners to the manufacturer’s specification.
6. Reconnect and align. Reattach the inlet, discharge, and cooling lines, and verify shaft alignment within the tolerance shown in the service manual.
7. Leak-check and start up. Open the isolation valves, start the compressor, and check pressures, temperatures, and vibrations against the rated values during the first hour of operation.

If your team lacks experience with air-end replacement, we recommend using a certified Atlas Copco service partner to guarantee correct alignment and torque.

Why Buy From Us

Every 1616711781 unit we sell is a brand-new, original Atlas Copco product purchased from Atlas Copco (Shanghai) Trading Co., Ltd. — the official sales channel — and shipped to you with full documentation. We ship from Belgium under tariff code 8414909090, and we stand behind the authenticity and quality of every element we deliver.

When you fit a genuine OFT H-11, you keep your compressor performing exactly as designed, and you keep your oil-free air supply certified, reliable, and cost-efficient for years.

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