Centrifugal force calculation formula and increasing centrifugal force method
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Centrifugal Force Calculation and Methods to Enhance It
The centrifugal force plays a crucial role in determining the efficiency of separation in a centrifuge. Therefore, how to effectively increase this force is a key area of focus for every centrifuge manufacturer.
The formula used to calculate centrifugal force (RCF) is:
**RCF = 11.2 × R × (r/min / 1000)²**
In this equation, **R** represents the radius of the rotor's centrifuge basket, while **r/min** refers to the rotational speed of the centrifuge.
From this formula, there are two main approaches to increasing the centrifugal force:
1. Increasing the radius of rotation (i.e., the size of the centrifuge basket).
2. Increasing the rotational speed.
While increasing the radius can enhance the centrifugal effect, it also increases the overall volume of the centrifuge. In most cases, boosting the rotational speed is more practical and efficient, as it allows for greater centrifugal force without significantly increasing the machine’s size.
Currently, most centrifuges on the market operate at centrifugal forces below 3000×g. Although increasing the motor speed is an effective way to boost centrifugal force, safety remains a critical concern. The rotor must be made of strong materials, and the centrifuge casing should be thick enough to withstand high-speed operation.
Our company uses high-strength aluminum alloy for the centrifuge baskets, with a height exceeding 10mm, ensuring they can handle intense centrifugal forces. The machine shells are constructed from 3mm steel plates, equipped with automatic electronic door locks for enhanced safety. Additionally, our centrifuges are powered by a 750W motor that runs at 4500 revolutions per minute for extended periods without any issues, ensuring reliable performance.
The radius of our centrifuge basket is **R = 160.35 mm**, and the rotational speed is **4500 r/min**.
This design ensures optimal performance, safety, and durability, making our centrifuges ideal for laboratory and industrial applications.
[Image: Centrifuge structure diagram]