This article's table of contents introduction:
- What a 4kW Sweeper Truck Fan Is
- Key Context & Applications
- Typical Specifications of a 4kW Sweeper Fan
- Common Issues & Maintenance
- A Typical 4kW Fan Part Number Example (Hypothetical)
- If you are looking to BUY or SPECIFY one:
- If you are REPLACING one:
It seems like you're looking for information about a 4kW fan used in a sweeper truck.
Here is a breakdown of what that specification means, the typical context, and key considerations.
What a 4kW Sweeper Truck Fan Is
A 4 kW (4,000 watt) fan is a high-power component typically used as the main suction fan or high-velocity side-brush fan on a medium to large-sized street sweeper (like a mechanical broom sweeper or a regenerative air sweeper).
- Purpose: It creates the powerful airflow needed to lift debris (dust, leaves, gravel) from the street surface into the hopper (the "trash bin" of the truck).
- Power Draw: The "kW" (kilowatt) is the electrical power consumption (for an electric fan) or the mechanical power requirement (for a hydraulic or PTO-driven fan).
- Voltage: A 4kW electrical fan on a truck is almost always 24V DC (common for heavy-duty trucks) or 48V DC (increasingly common for hybrid/electric sweepers).
- Math Check: 4,000 watts / 24 volts = ~167 Amps. This is a very high current, requiring heavy-duty cables and relays/fuses.
Key Context & Applications
- Hydraulic vs. Electric:
- Hydraulic: Most traditional sweeper trucks use a hydraulic motor to spin the fan, which is powered by a hydraulic pump driven by the truck's diesel engine (PTO). The "4kW" would be the mechanical power required to drive the hydraulic pump.
- Electric: Newer, cleaner sweeper trucks use electric motors directly. This is where the "4kW electrical fan" specification is most common. It's quieter, more efficient, and allows for variable-speed control.
- Fan Types:
- Centrifugal (Squirrel Cage): The most common. Creates high pressure for lifting debris.
- Axial: Used more for side-brush or gutter-boom airflow.
Typical Specifications of a 4kW Sweeper Fan
- Airflow (CFM): Likely in the range of 2,000 - 4,000 CFM (Cubic Feet per Minute) depending on the pressure/static head.
- Pressure (Inches of Water): Probably 10" - 20" w.g. (water gauge) for a standard sweeper.
- Speed: High speed – typically 2,000 - 4,000 RPM.
- Noise Level: Very loud. Expect 80-95 dB(A) without adequate muffling.
- Mounting: Flange-mounted or pedestal-mounted inside the truck's body.
Common Issues & Maintenance
- High Current Consumption: Over 160A at 24V can strain alternators and batteries if the fan runs continuously.
- Debris Ingestion: The fan must be protected by a grate or screen to prevent large objects (bottles, rocks, cans) from destroying the fan blades.
- Bearings: High load and speed mean bearings can fail. Use high-performance sealed bearings.
- Motor Controller (for electric fans): The DC motor needs a heavy-duty PWM controller or a contactor capable of handling the 160A+ load.
- Vibration: A 4kW fan must be balanced, or it will vibrate itself to death and loosen other components.
A Typical 4kW Fan Part Number Example (Hypothetical)
You might see something like this from a supplier:
- Part: 24V DC Sweeper Truck Main Suction Fan
- Motor Power: 4 kW
- Speed: 3,200 RPM
- Airflow: 3,200 CFM @ 12" w.g.
- Dimensions: ~Ø18" x 12" wide
- Application: Elgin / Johnston / TYMCO sweepers (or a generic retrofit)
If you are looking to BUY or SPECIFY one:
You should be looking for a "24V DC High-Pressure Centrifugal Blower 4kW" or a "Hydraulic Fan Motor + Fan Assembly 4kW" .
If you are REPLACING one:
You will likely need to know:
- Shaft diameter and keyway size.
- Mounting bolt pattern.
- Rotation direction (CW or CCW when viewed from the drive end).
- Inlet/outlet duct flange dimensions.
Need more specific help? If you can tell me the make and model of your sweeper truck (e.g., Elgin, Johnston, Dulevo, TYMCO) and whether it's for a Main Suction or Side Brush application, I can provide more targeted information.
