Product brief description
Our heavy-duty dual squirrel cage AC blower motor assembly is the air delivery core of vehicle heating and air conditioning systems, widely designed for trucks, coaches, construction machinery, agricultural vehicles, campers and RVs. Equipped with dual large fan wheels, high-power pure copper built-in motor, complete wiring harness, speed control switch and integrated plastic housing as one finished unit, this blower provides powerful stable airflow for cold air circulation in summer and hot air heating in winter. Available in standard 12V and 24V two voltage options to match all vehicle electrical systems. Adopting wear-resistant bearings and balanced fan impellers, it features ultra-low running noise, strong wind volume output and long service life. Fully pre-assembled with all internal control components, no extra assembly required during installation, perfectly solves common faults such as no wind output, weak airflow, abnormal buzzing noise and motor burnout of original vehicle blowers. An essential aftermarket replacement spare part for global vehicle maintenance technicians, auto parts wholesalers and machinery owners.
Product detailed description
Dual Squirrel Cage Fan Wheel Design, Large Air Volume & Even Air Supply Different from single small fan blowers with limited airflow, our product adopts double parallel squirrel cage fan impeller integrated layout. Two symmetric fan wheels rotate synchronously driven by the middle motor, greatly increasing the overall air intake and exhaust volume. The curved fan blades are precisely injection molded with thickened high-strength plastic, with excellent dynamic balance after professional calibration. The airflow output is stable and uniform without turbulent flow, which can quickly fill the entire cab space, ideal for large-space cabins of trucks, excavators, buses and RVs. Even under high-speed gear operation, the wind is soft and powerful without harsh air noise.
99% Pure Copper Winding Motor, Stable Power & Anti-Burnout Performance The built-in driving motor uses full pure copper enameled wire winding instead of cheap aluminum wire coils. Pure copper has excellent electrical conductivity, low heat generation and strong overload resistance. During long-time continuous operation, the internal temperature rise is very low, effectively avoiding coil overheating burnout, short circuit and power attenuation problems common in inferior motors. The motor is sealed with high-temperature resistant epoxy resin inside, which can resist moisture, dust and condensate erosion inside the blower housing, adapting to humid and dusty cab environments all year round.
High Precision Wear-Resistant Ball Bearings, Ultra Quiet & Low Vibration Operation
Both ends of the motor rotating shaft are equipped with imported high-speed sealed ball bearings. After precision dynamic balance debugging, the rotation resistance is extremely small, vibration amplitude is greatly reduced during operation. Compared with ordinary sleeve bearings, ball bearings have longer service life, will not produce dry friction buzzing noise after long-term use. Even running continuously for hundreds of hours, the whole blower only produces soft running sound, will not bring noise interference to drivers during long-distance driving.
Complete Pre-Wired Assembly with Multi-Speed Control System, Convenient Plug-and-Play Use
Our blower is delivered as a fully finished integrated unit, including: dual fan wheels, main motor, complete wiring harness, multi-speed wind speed adjustment switch, temperature control valve and all connecting circuits pre-installed inside the sealed housing. Customers do not need to purchase switches, wires or control accessories separately. The reserved standard wiring plug perfectly matches most heavy-duty vehicle original wiring sockets. After fixing the housing in the installation position, just plug in the wire connector to complete installation, realizing 3-speed wind adjustment (low/medium/high wind) to freely switch airflow intensity according to temperature demands.
Reinforced Impact-Resistant ABS Plastic Housing, Shockproof & Dustproof Sealed Structure
The outer shell is integrally injection molded with thickened high-toughness engineering ABS plastic. It features strong impact resistance, anti-cracking, high and low temperature resistance, will not deform, harden or become brittle under the alternation of summer high temperature and winter low temperature. The shell adopts a fully enclosed sealing design, which can effectively block dust, fine debris, condensate water and engine compartment oil mist from entering the internal motor and circuit parts, greatly reducing the failure rate of electrical components and prolonging the overall service life of the blower assembly. Multiple reserved fixing lugs are designed around the shell, which is convenient for screwing and fixing on the vehicle mounting bracket.
Two Voltage Options: 12V & 24V, Ultra-Wide Vehicle Compatibility
12V Version: Suitable for small pickup trucks, mini vans, RV campers, small agricultural machinery and all 12V passenger vehicle electrical systems;
24V Version: The mainstream model for heavy-duty trucks, large buses, coaches, excavators, loaders, harvesters, tractors and all construction machinery with 24V power supply. We maintain universal overall dimension design, compatible with most aftermarket replacement demands for engineering vehicle air conditioning blowers.
Wide Temperature Adaptability, Stable Operation In All Climates The whole assembly can work stably in the ambient temperature range of -35℃ ~ +75℃. In cold winter northern areas, the motor can start smoothly without slow rotation caused by low temperature; in hot tropical summer environments, the coil will not overheat and power decline. It adapts to global extreme weather conditions without performance attenuation.
Strict Multi-Round Factory Quality Inspection
Every blower assembly will pass 5 major testing procedures before leaving the factory to ensure qualified quality:
Motor no-load voltage and current detection to verify power stability;
Full-speed running noise & vibration test to screen unbalanced fan wheels;
Continuous 200-hour aging endurance test to check coil durability;
Circuit switch on-off cycle test to guarantee wind speed adjustment sensitivity;
Sealing dustproof & water splash resistance test for plastic housing. All unqualified semi-finished products are eliminated thoroughly.
Wide Application Scenarios
Heavy Commercial Vehicles: Freight trucks, passenger buses, coaches cab air conditioning heating and cooling air supply replacement;
Construction & Agricultural Machinery: Excavators, loaders, harvesters, tractors cab HVAC system supporting blower;
RV & Modified Vehicles: Camper van interior air circulation heating and refrigeration assembly;
Auto Parts Wholesale: Repair shops and distributors bulk stocking for daily vehicle maintenance supply.
Visible Benefits After Replacement
Replacing the worn-out, noisy original blower with our dual-wheel pure copper blower assembly can thoroughly solve no airflow, weak wind and abnormal noise issues. Multi-speed adjustable wind brings comfortable temperature control experience for drivers; stable motor performance avoids frequent maintenance troubles caused by repeated burnout; sealed structure effectively protects internal components, greatly cutting vehicle maintenance costs. With OEM matching performance and affordable factory direct sales price, it is the most reliable air supply accessory for global heavy vehicle HVAC maintenance.
Product Specifications
Model |
Voltage |
Current |
Speed |
CF-7127 |
24V |
≤10.9A |
3200±100 RPM |
CF-7128 |
24V |
≤9.6A |
3250±100 RPM |
CF-7137 |
12V |
≤8A |
3900±100 RPM |
CF-7138 |
24V |
≤9.2A |
3800±100 RPM |
CF-7152 |
24V |
≤14A |
3400±100 RPM |
CF-7153 |
24V |
≤12A |
3300±100 RPM |
CF-7157 |
12V |
≤13A |
3100±100 RPM |
CF-7161 |
24V |
≤5A |
3200±100 RPM |
CF-7163 |
24V |
≤6A |
3500±100 RPM |
CF-7164 |
12V / 24V |
≤11A / 6A |
3600±100 RPM |
CF-7164-1 |
12V / 24V |
≤11A / 6A |
3600±100 RPM |
CF-7171 |
24V |
≤8A |
4100±100 RPM |
CF-7168 |
24V |
≤10.2A |
3200±100 RPM |
CF-7169 |
12V / 24V |
≤8A / 5A |
3000±100 RPM |
CF-7173 |
24V |
≤11.6A |
3460±100 RPM |
CF-7181 |
24V |
≤8.5A |
4100±100 RPM |
FAQ
Q1: What voltage versions do you offer, and which vehicles do they fit?
A: We provide 12V and 24V two options. 12V fits small vans, pickup trucks and RVs; 24V is designed for large trucks, buses, excavators and agricultural machinery. You can confirm your vehicle system voltage before purchasing.
Q2: Does this blower come fully assembled with wires and speed switch?
A: Yes, it is a complete pre-assembled unit with built-in motor, dual fans, wiring harness, multi-speed control switch and connecting pipelines. You can directly install and plug in without extra parts assembly.
Q3: Will the blower produce loud noise after long-term use?
A: Adopting precision dynamic balanced fan blades and sealed high-quality ball bearings, under normal use, the running noise remains low for a long time, and no harsh buzzing sound will appear within the service life.
Q4: Can I install this blower by myself?
A: Simple mechanical installation can be completed by professional vehicle maintenance personnel. You only need to fix the housing bracket and connect the wire plug. No complicated refrigerant operations are required, much easier to install than compressors or condensers.
Q5: How long is the service life of this blower motor?
A: Under regular vehicle use and dust environment, the service life can reach 60,000 – 100,000 working hours, far longer than aluminum coil cheap blowers on the market.
Q6: Can the blower be used for both cold air and hot air?
A: Absolutely yes. It is the general air circulation fan for automotive HVAC system, responsible for blowing both refrigerated cold air and heating hot air in all seasons.
Q7: Is the plastic casing resistant to high temperature and cracking?
A: The shell is made of high-toughness engineering ABS plastic, resistant to high temperature, low temperature and vibration impact, no cracking or deformation under long-term cab environment use.
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