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 Oct 28, 2022|View:218

Investing in an Air Cooled Spindle Motor is a must for any Spindle Motor Manufacturer to deliver high-quality products. An efficient spindle motor is vital for industrial machines that conduct high-speed operations such as milling, engraving, and drilling. Heat generation is inevitable during these processes, and to maintain optimal performance, it requires cooling. Water-cooled spindle motors are great for high-heat applications, while Air Cooled Spindle Motors offer added convenience and lower maintenance costs. Choosing the right spindle motor is crucial for the longevity of your machinery and the satisfaction of your clients.

Air Cooled Spindle Motor

Air and water cooling are two of the most commonly used methods for cooling down the spindle. The spindle motor breaking down can cause a delay in the entire process. Therefore a durable and smooth method for cooling should be used. But it is daunting to know which is more effective and efficient. Let us read on by going through this article and comparing the two head-to-head.

1. Cooling effect: The ability to dissipate heat is better in a Water Cooled Spindle Motor than in the air-cooled one. The Air Cooled Spindle Motor uses a fan that dissipates the heat, while the Water Cooled Spindle Motor uses water circulation to cool down the motor. The latter allows the temperature of the spindle to be kept below 40 degrees, which is a more remarkable result than what is obtained through the Air Cooled Spindle Motor.

2. Noise: The Water Cooled Spindle Motor is almost noiseless, while the Air Cooled Spindle Motor generates the fan's noise, making it much noisier.

3. Rotational speed: An Air Cooled Spindle Motor can clock a rotational speed of 18000 rpm. On the contrary, the speed of the Water Cooled Spindle Motor is much higher, at 24000 rpm. As a result, the latter can accomplish more work in lesser time.

4. Convenience: Air Cooled Spindle Motors do not come with water tanks or machinery to pump water and are, therefore, more convenient and lighter to use than Water Cooled Spindle Motors.

5. Performance: Air-cooling spindles offer higher torque, which makes the cutting force stronger. This makes the Air Cooled Spindle Motor more favorable than its water-cooled counterpart.

6. Durability: The service life of a Water Cooled Spindle Motor is longer than that of an Air Cooled Spindle Motor. Water Cooled Spindle Motors require effort on the operator's part to take adequate care to maintain them. Their durability can be improved by replacing water or using industrial water coolers and other means.

7. Accuracy: As far as accuracy is concerned, Water Cooled Spindle Motors are better as the axial and radial runout is lesser than 0.003 mm. The Air Cooled Spindle Motor, unfortunately, misses the mark in this regard.

8. Operating environment: The water-cooling spindle is more restrictive and has two major drawbacks- it requires a continuous water supply, a pump, and other such equipment to support it. This increases the amount of space it requires. Secondly, it cannot offer optimal performance in climatic extremes, especially when the temperature drops. On the other hand, the Air Cooled Spindle Motor is free of such concerns, but where temperatures are concerned, it will be more restrictive in hotter conditions than the Water Cooled Spindle Motor.

9. Single use time: Water cooling is more suitable than air cooling for cutting and drilling jobs that run for longer durations. This is because water-cooling spindles operate at exceptional speeds while maintaining a temperature of not more than 40 degrees after each watering cycle.

10. Price: Air Cooled Spindle Motors that offer performance equivalent to water-cooled ones are more expensive. Since Air Cooled Spindle Motors are easier to operate and less bulky in size and weight, their cost can sometimes escalate. They offer a more stable operation when compared to Water Cooled Spindle Motors, as they are not too affected by the change in temperatures. Water Cooled Spindle Motors can freeze and break in low temperatures, making them less durable and relatively cheaper.

Due to the multiple factors listed above, one can opt for air-cooled or Water Cooled Spindle Motors. If, however, price is a constraint, one may opt for an Air Cooled Spindle Motor instead. It is essential to pay attention to the weather conditions in which the spindles will operate before deciding.

As a leading Spindle Motor Manufacturer, WHD motor specializes in producing top-quality Water Cooled and Air Cooled Spindle Motors. Visit our website,, to explore our collection of superior products that cater to your specific requirements. Get in touch with us at +86 13701504100 to learn more about our motors and how they can benefit your business.