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DC 12inch 305mm 24V Brushless Axial Fan replace SPAL BBL506 - WBLF-1251-BS3600-B-V01

DC 12inch 305mm Brushless Axial Fan / Condenser Fan can replace SPAL fan BBL506, 24V, 4050m³/h, 4000rpm Max, IP68 waterproof. Long lifetime for work.
Customization is available, specially designed to meet new generation cooling systems requirements in every industry.
Indidually packing for fan , fast delivery.
  • WBLF-1251-BS3600-B-V01 replace SPAL BBL506

  • Sunlight

  • 4050m³/H

  • 25000H

  • IP68

  • Engineering trucks, bus airdition system, especially for new energy vehicle and new energy charging pile heat dissipation System and so on

  • PWM

  • Brushless

  • 305mm

  • 24V

  • ≤38A


Specifitaion of WBLF-1251-BS3600-B-V01 replace SPAL BBL506

Model WBLF-1251-BS3600
Max fan speed 4000rpm
Min fan speed 1500rpm
Noise level 60dBA
Weight 3.5kg
Lifetime up to 25000 hours depending on mission profile
Time from 0 rpm to max speed 8S
Range of working temperature -40 ~ +80℃
Operating power supply voltage range 18-32V

We have 12-24V brushless axial fan,and 200W-950W.We will recomemd u the correct model according to your specifications.

Airflow of WBLF-1251-BS3600-B-V01 replace SPAL BBL506

Air volume and current curve chart

12in fan performance diagram

Drawing of Dimension(mm) of WBLF-1251-BS3600-B-V01 replace SPAL BBL506


Product Photo of WBLF-1251-BS3600-B-V01 replace SPAL BBL506

Brushless Axial Fan-2

Brushless Axial Fan-3

Advantages of WBLF-1251-BS3600-B-V01 replace SPAL BBL506

1.Independent research and development fan blades and driver

2.High power

3.low noise

4.IP68 protection level

5.The fan can realize stepless speed regulation.

6.The working environment is -40℃~+ 100℃

7.Passed EMC certification,meets ISO 16750:2010 standards

8.The fan blade and motor structure have applied for domestic and international invention patents.


Brushless axial fan can be used in Ambulance,Loader,Construstion machinery,Drilling truck,Manure truck,corn reciver,Excavator,Snow shovel,Bus,Engineering vehicle,Forestry machinery,Refrigeration truck and so on.

application-new energy vehicle

New energy vehicle

充电桩new energy charging pile

Hydrogen fuel vehiclehydrogen fuel vehicles


About us


Since 1990

Sunlight provides the market with a wide range of high performance brushless fans and blowers, specially designed to meet new generation cooling systems requirements in every industry.

Currently our company has passed ISO9001 and YS16949,also brushless axial fans have got then CE,RoHS certification.

Our principle: Quality is our life, technical is the basic, be honest and faithful to our partners. At the same time, we pay more attention on team work and improving the staff skills.Customer requirements and the innovation of technology as our guide, try to be the market leader of axial fan business.


EMC certificate for brushless fan - sunlight motor


EMC certificate


CEPCT certification


ISO9000 certification




patent for invention -2


patent for invention


Utility patents


Utility patents-3



We attended Bauma Fair In German and Shanghai,Frankfurt Shanghai,CIAAR Shanghai.

exhibition show room

Shanghai BAUMA  Exhibition

exhibition-show room-5jpg

Shanghai Frankfurt  Exhibition



Test  experiment





Goods are shipped all over the  world  

delivery brushless fans-5

delivery   DC Fans

delivery fans

delivery to  European

delivery brushless fan

delivery brushless fans

delivery goods

delivery axial fans


Q :    Why are you choose Sunlight DC 12inch 24V Brushless Axial Fan ?

A:     1、Our factory is certified by IATF16949

        2、We have a complete range of specificationsAll products shall be inspected 100% before shipment

        3、The fan performance is great ,strange air flow ,low noise , hight waterproof  IP 68  and longtime

         4、fans are widely used ,it is mainly to use in engineering trucks,  bus airdition system , especially for new energy vehicle and new energy ,charging pile heat dissipation sysem and so on,It is very polpular in the market.

          5、We have a professional customer service team and engineering team,specially designed to meet new generation cooling systems.

          6、 Delivery fast ,For samples: within 7days; For orders: within 15days.

Q:Why is the quality of our DC 12inch 24V Brushless Axial Fan reliable?

A: 1、We have a professional R & D technical team, 8 doctoral students, 5 electrical engineers, 3 structural engineers

    2、Our engineering team develops and designs drive control panels to meet different customer needs

    3、The fan blade of our fan is independently developed and designed, and has a patent for invention

    4、We have perfect testing equipment ,Wind tunnel  experiment  equipment , vibration test bech  high and low temperature equipment  and noise room and so on .

    5、Our DC fans have been used in a large number of market oems, and can be applied to all kinds of working conditions, and the customer  feedback   is very good。

Q:Why do most customers prefer DC 12inch 24V Brushless Axial Fan?

A: 1、More energy saving and environmental protection, reduce energy consumption

   2、The same power DC fan , brushless current is lower, more air volume, higher efficiency

   3、Can realize a variety of types of speed control

    4、long lifetime ,one brushless fan lifetime =equal to eight brushless fans

Q: What is the airflow of DC 12inch 24V Brushless Axial Fan?

A: The installation is flexible, it can be installed on both sides, so it can be used both for suction and blowing.

Q: What is the control method of DC 12inch 24V Brushless Axial Fan?

A: Generally, it is in high level effective, but we have the software team that can customized the control as you need.

Q:Could I take samples to test quality and market in advance?
A: Yes, welcome to take samples to test our quality and service.

DC Brushless Axial fan Behaviour

To understand the cooling behavior of a brushless DC fan, you first need to understand the working of its components. However, you can understand the general behavior of the fan by closely following the voltage drops and rises in the power supply. DC Brushless Axial fans have three voltage variants: 12V, 24V .

Let us try to understand this through a simple example. If a brushless DC brushless Axial fan operates on 12 volts of voltage, then the fan would have an RPM (revolutions per minute) of around 2500. Suppose the voltage now drops to 9 volts, then the RPM of the fan would be reduced to about 1300. Such factors are taken into serious consideration during the testing and R&D of the product to minimize this possibility, that is decreased RPM with less voltage. An efficient DC brushless  Axial fan is quite stable and works well even during power fluctuations.

DC Brushless Axial Fan Types

In an environment where air flow is not easily generated naturally, air movement by external force is needed for cooling propose. Nowadays, the air movement is commonly generated by cooling fans which can be differ widely by shapes, sizes, functions etc.. Therefore, Cooling fans have typically classified into 4 categories which include Axial Fans, Centrifugal Fans, Centrifugal blowers, Cross Flow Fans.

Fan Accessories

Sunlight Brushless Axial fans are the result of more than 10 years engineering experience. Sunlight uses advanced modeling software and computer-assisted simulation systems to develop electric motors and blades that optimize a fan’s ability to pull air cleanly through the radiator core.

While many cooling fans are pieced together from many different vendors, Sunlight controls all aspects of its engineering and manufacturing processes from the design and tooling of injection molds to the winding of each electric motor at its ISO 9001 and TS16949-certified facilities.