QSI370ANA21B QUINCY Air Compressors

Review QUINCY 75hp Low Hours

The Quincy QSI-370ANA21B is a powerful and efficient air compressor that delivers 75 horsepower (hp) and is ideal for heavy-duty industrial applications. This compressor, manufactured in 1994, is part of Quincy Compressor's QSI series, which is renowned for its durability and reliability.

This compressor features a two-stage, oil-lubricated compressor that utilizes a cast iron construction for added strength and longevity. The compressor pump is designed with a large capacity cooling system that ensures efficient and consistent cooling, even during long operating hours. This cooling system includes an integrated aftercooler that reduces the temperature of the air before it enters the air tank, ensuring that the compressed air is as dry as possible to prevent moisture damage.

The QSI-370ANA21B comes with a horizontal, open-top air tank that provides a generous 125 gallons (472 liters) of storage capacity. The tank is constructed from heavy-duty steel and is coated with a corrosion-resistant finish to protect against rust and other forms of damage. The compressor also includes a large drain valve at the bottom of the tank for easy draining of condensate.

The compressor is equipped with a variety of features to ensure easy maintenance and operation. These include a pressure switch with a built-in thermal overload protection system, an oil level sight gauge, and a large access door for easy access to internal components. The compressor also includes a belt guard to protect against belt damage and a vibration isolation mount to reduce noise and vibration.

The QSI-370ANA21B is designed to operate at a maximum pressure of 150 psi (10.3 bar) and includes a pressure regulator to ensure that the output pressure is consistent and reliable. The compressor also includes an unloader valve that automatically unloads the compressor when the tank reaches full capacity, preventing damage to the compressor and ensuring that the compressed air is used efficiently.

This Quincy compressor is also designed with a heavy-duty, belt-driven motor that is capable of delivering 75 hp at 1800 rpm. The motor includes a high-quality, heavy-duty starter that ensures reliable starting, even in demanding industrial environments. The compressor also includes a large, easy-to-read pressure gauge and a control panel with a variety of switches and indicators to allow for easy monitoring of compressor performance.

Overall, the Quincy QSI-370ANA21B is a powerful and efficient air compressor that is ideal for heavy-duty industrial applications. Its durable construction, reliable performance, and easy maintenance make it a popular choice among industrial users who require high-quality compressed air for their operations.

The Quincy QSI370ANA21B is a 1994 model, 75 horsepower, air-cooled, diesel-powered generator with a capacity of 370 watts continuous and 455 watts maximum. Here are some pros and cons of buying this generator:

1. Powerful: With a 75 horsepower engine, it can generate a considerable amount of power, making it suitable for heavy-duty applications.

2. Durable: Quincy generators are known for their robust design and long-lasting performance. This model, in particular, is designed for industrial use and can withstand harsh conditions.

3. Versatile: The QSI370ANA21B can be used for various applications, including construction sites, agriculture, and emergency power backup.

4. Reliable: Quincy generators have a reputation for reliability and can run for long hours without requiring frequent maintenance.

5. Quiet operation: Compared to other industrial generators, this model operates relatively quietly, making it suitable for use in residential areas or where noise levels need to be kept low.

1. Size and weight: With a large engine and a heavy-duty frame, this generator is bulky and weighs over 2,000 pounds, making it difficult to transport and move around.

2. Fuel consumption: The QSI370ANA21B consumes a considerable amount of diesel fuel, which can increase operating costs.

3. Complexity: This generator is not for the novice user. It requires professional installation and maintenance and has a more complex control system than smaller generators.

4. Emissions: This industrial generator produces high levels of exhaust emissions, which can be harmful to the environment and require regular testing and maintenance to meet regulations.

The Quincy QSI370ANA21B is a powerful and durable generator suitable for heavy-duty applications. Its robust design, reliability, and quiet operation make it a popular choice for industrial use. However, its size, weight, fuel consumption, complexity, and emissions make it a less practical option for residential use or smaller businesses.

If you require a powerful industrial generator for heavy-duty applications, the Quincy QSI370ANA21B is an excellent choice. However, if you are looking for a smaller, more cost-effective generator for residential or light commercial use, there are other options available on the market that may better suit your needs. Before making a decision, consider the specific requirements of your application and the trade-offs between power, size, weight, fuel consumption, complexity, and emissions.

Details:

Fully serviced and test ran. Can be loaded on truck for free.

specifications compressorshow:

• brand: Quincy
• mpn: Qsi370ana21b
• part type: Compressor
• motor horsepower: 75
• compressor type: Rotary Screw
• features: Stationary
• orientation: Horizontal
• power supply: Electric

shipping compressorshow:

general compressorshow:

• category: Business & Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Blowers > Air Compressors

offer compressorshow:

• in stock #: 5
• best offers: true
• prices: $95.00–$4900.00
• item condition:
  • Used
  • New
• started: november 4, 2025
• availability: in stock
• sold #: 18
• options: seller-arranged-local-pickup

payments compressorshow:

• other
• wallet: apple-pay
• credit card: mastercard

returns compressorshow:

• policy: no returns

seller compressorshow:

• city: alvarado, texas
• # reviews: 338
• rating: 100.0%