Imported Roots Blower
Roots Blower

Derived from the classic technology of Alpha in the United States. Adopting integral three-blade rotor and double oil tank splash lubrication design, it is specially designed for high pressure difference and heavy load working condition. Sturdy structure, stable operation, is the cornerstone of industrial pneumatic conveying and sewage aeration.

Maximum flow rate Flow

13,500 m³/h

Maximum Differential Pressure

98.8 kPa

Working Principle

Demonstration of the working principle of a Roots blower

2D Cross-sectional demonstration: The gas is drawn in at the upper inlet and is pushed along the inner wall of the casing by the “closed volume” formed by the three-bladed rotor to the lower exhaust port.
Observe that the airflow is along the inside walls of the housing on both sides, not through the center of the two rotors.

Speed

1. Intake

The rotation of the rotor enlarges the volume of the air inlet, and the gas is sucked into the casing under negative pressure.

2. Transfer

The gas is “shut off” in the closed chamber formed by the impeller and the inner wall of the casing and is transported from top to bottom. Note: The gas does not pass through the center of the rotor.

3. Exhaust

When the closed chamber is connected to the exhaust port, the high-pressure gas returns, forcing the gas out and completing the pressurization.

Why Alpha

Why choose Alpha Roots fans?

The fully air-cooled design completely eliminates the installation costs and failure risks associated with cooling water. Combined with a highly efficient acoustic enclosure and automatic tensioning system, maintenance has never been easier.

Fully air-cooled design

No external cooling water is required, eliminating the hassle of plumbing installation and scaling and clogging. Stable operation is maintained even in high-temperature environments by a specially designed ventilation system.

Highly efficient and quiet

Equipped with high efficient soundproof cover, sound-absorbing material adopts fireproof foam. The high flow ventilation fan extracts the hot air out of the box while effectively blocking the mechanical noise.

Automatic Tensioning System

The motor base is equipped with an automatic tensioning device that utilizes the motor's own weight to maintain belt tension, eliminating the maintenance of frequent manual belt adjustments by the user.

Core Components

Host Core Components Explained

One-piece three-blade rotor

High quality cast iron material, strength close to steel. Three-blade profile design significantly reduces airflow pulsation, smoother operation.

Synchronous helical gears

The use of low-noise synchronized helical gears with ISO Class 6 accuracy ensures precise rotor engagement backlash.

Double-ended oil bath lubrication

Gear end and drive end both adopt large oil tank “oil bath splash lubrication”, completely abandon grease lubrication, better heat dissipation, bearing life extension.

Oil-free sealing technology

The sealing structure consisting of four piston rings and shaft shoulder, together with the dry labyrinth seal at the end of the active shaft, ensures that the conveyed air is completely oil-free.

Technical Data

Performance Parameter Table (50Hz)

* Data based on standard intake condition: 1 atm, 20°C

Model	Maximum flow rate (m³/h)	Maximum Flow Rate (cfm)	Maximum Boost (mbar)	Maximum Boost (psi)	Maximum vacuum (mbar)
AF002XPC	550	330	1000	15	500
AF103XPC	900	526	1000	15	500
AF105XPC	1400	823	1000	15	500
AF108XPC	1800	1058	1000	15	500
AF212XPC	2700	1585	1000	15	500
AF218XPC	3150	1850	1000	15	500
AF326XPC	4300	2530	1000	15	500
AF343XPC	5000	2940	930	13	500
AF455PC	7000	4100	1100	16	500
AF470PC	8000	4700	900	13	500
AF590PC	9000	5300	900	13	500
AF5110PC	11000	6500	600	9	500
AF5170PC	13500	7950	850	12	500

Installation

Unit external dimensions (with acoustic enclosure)

Model	Length A (mm)	Width B (mm)	Height H (mm)	Connection DN (mm)	Weight W (kg)
AF102XPC	1400	1240	1671	DN100	880
AF105XPC	1400	1240	1671	DN100	920
AF108XPC	1400	1240	1671	DN150	1050
AF212XPC	1660	1560	2052	DN150	1750
AF218XPC	1660	1560	2052	DN200	1910
AF326XPC	2000	1850	2291	DN200	2320
AF343XPC	2000	1850	2400	DN250	3000
AF455PC	2260	2320	2490	DN250	3800
AF470PC	2260	2320	2890	DN250	4000
AF590PC	2500	2800	3126	DN300	5000
AF5110PC	2500	2800	3126	DN350	5500
AF5170PC	2500	2800	3126	DN350	5500

* The above data is the standard configuration weight, according to the different power of the motor, the actual weight is slightly different.

Need a more detailed selection program?

Our engineers are always ready to provide you with working condition analysis and selection support.