JF Series Normal Pressure Air-Cooled Two-Stage Screw Air Compressor

The JF Series normal pressure air-cooled two-stage screw air compressor covers a power range of 22kW to 315kW, tailored for diverse industrial compressed air demands. Adopting advanced two-stage compression technology, this series of compressors effectively optimizes the air compression process, greatly improving operational efficiency and achieving outstanding energy-saving performance compared with conventional single-stage models. Featuring a professional air-cooled heat dissipation structure, the equipment ensures stable and reliable continuous operation under complex and harsh working conditions. With exquisite industrial design, premium core components and strict manufacturing standards, the JF series delivers stable output, low failure rate and long service life, serving as an efficient, energy-saving and durable core air supply solution for various industrial production scenarios.

Power: 22-315kW

Get Product Quotation

Download Product Information

Features Core Technology Machine Structure IOT Technology

Features

Grade 1 Energy Efficiency

Meets GB 19153-2019 Grade 1 efficiency requirements, with over 30% energy savings vs. conventional single-stage compressors.

Horizontal Two-Stage Compression

A 3:1 pressure ratio reduces reverse-flow leakage, while near-isothermal compression lowers energy consumption by 15% at the same flow rate.

Air-Cooled High-Efficiency Permanent Magnet Motor

Zero rotor slip and no electrical excitation reduce losses and heat generation, delivering 5%–8% higher efficiency than equivalent asynchronous motors.

Smart IOT

Supports full remote access and control via IoT, and comes standard with our intelligent air compressor operation & maintenance platform.

Core Technology

Two-Stage Air-Cooled Compression Main Unit

This rotor design delivers zero slip and eliminates electric excitation, cutting copper and iron losses and minimizing heat generation to reduce stator current and resistance losses. It boasts 5%–8% higher efficiency than asynchronous induction motors of equivalent power ratings, and maintains outstanding efficiency even under low-speed operation.

Synchronous Motor with Stepless Speed Regulation

Electronic variable speed control is integrated into the two-stage compression process, enabling synchronous stepless speed adjustment for both the first and second-stage airends to satisfy diverse industrial working requirements. The motor reaches a peak efficiency of 95.5%, delivering a 4.1% reduction in energy consumption while outputting high torque and maintaining steady running performance.

Energy-Efficient Rotor Profile

Drawing on years of technical accumulation, Xinlei’s R&D team continuously optimizes the V-series rotor profiles through in-depth analysis of energy-saving requirements and structural iteration. This rotor profile ranks among the most energy-efficient options for screw compressors, featuring superior volumetric efficiency, optimized meshing contact points, and a minimized discharge-side leakage triangle.

Machine Structure

Efficient Filtration System

The high-efficiency oil-gas separator keeps residual oil content in exhaust air below 3 ppm.

The precision oil filter removes impurities from lubricant oil to deliver clean lubrication for compressor rotors and bearings.

The high-efficiency horizontal air filter blocks dust and contaminants from intake air to protect rotors and bearings against abrasion and damage.

Two-Stage Air-Cooled Compression Unit

Horizontal low-center-of-gravity layout suppresses vibration and guarantees stable continuous operation.

Integrated airend & motor construction achieves 100% power transmission efficiency with zero transmission loss.

Compared with single-stage compressors, it features a smaller single-stage compression ratio and negligible internal leakage. Inter-stage oil cooling realizes near-isothermal compression.

Supports synchronous stepless speed regulation to meet diverse air supply demands. The motor hits 95.5% efficiency with 4.1% energy savings, high torque output and reliable operation.

Dual Variable Frequency System with Constant Temperature & Pressure

Enlarged radiator with anti-rust and anti-corrosion surface coating is easy to clean and long-lasting, delivering stable constant-temperature heat dissipation.

Low operating oil temperature prevents oil pipeline blockage, carbon buildup and high-temperature faults.

Stable unit operation extends overall service life and avoids emergency shutdowns caused by overheating.

Intelligent Control System

Intuitive synchronized data display is available via on-site touchscreen, mobile devices and computers, allowing operators, service technicians and manufacturers to view real-time operating status, performance data and fault alerts simultaneously.

Supports 24/7 online real-time monitoring of pressure, power draw and temperature fluctuations.

Cooling System

Available with a plate-fin air-cooled heat exchanger or shell-and-tube water-cooled heat exchanger to suit different operating conditions.

The heat exchanger is designed with over 30% additional heat transfer area for enhanced cooling performance.

It maintains effective cooling at ambient temperatures up to 45°C, helping prevent high-temperature shutdowns and extend lubricant service life by 20%.

IOT Technology

The cloud platform records and displays the operating status and real-time parameters of connected compressor units, while supporting fault alerts, data logging and data analysis. Users can log in to the platform for remote monitoring and energy-saving parameter management, enabling full real-time equipment management. Currently, the IoT cloud platform is compatible with Android, iOS and PC clients. It also provides open interfaces for linkage with third-party systems such as ERP, delivering more flexible and diversified management solutions for users.

Professional gas data statistical analysis to support enterprise business decision-makingStable air pressure output and scientific full-system energy savingOn-demand gas supply to effectively avoid energy wasteAutomatic daily equipment operation records for easier maintenance and daily managementReal-time energy consumption monitoring and data collectionVisualized equipment operating status to view real-time working conditions at a glanceRemote equipment management and intelligent joint control