A vacuum pump oil filter is used to remove unwanted particles, such as debris and dust, from the oil that lubricates the compression chamber of a vacuum pump. This ensures that the oil remains clean and retains excellent lubrication and sealing properties.

Oil filtration is essential to ensure the longevity and performance of your vacuum pump, as well as the quality of your production process.

1. Separating stage
2. Oil filter position
3. Outlet of the oil filter

The pumped medium containing oil particles enters the oil mist separator. Due to gravity, the oil drops to the bottom of the oil separating chamber while the pumped medium continues towards the outlet. The oil is pumped into the oil filter through the suction of the compression process. Once filtered, it is sent back into the compression chamber again through an oil return line and an oil supply line which are connected to the oil inlets.

1. Oil inlet to the vacuum chamber

Busch genuine oil filters are used in our R5 vacuum pumps. They remove unwanted particles, such as dust and debris, from the oil that lubricates the compression chamber. Standard and ATEX filters are made of cellulose, while those for applications with extended oxygen content are made of glass fiber. They are located outside of the vacuum pump and are connected to the oil mist separator. The oil is pumped into the oil filter through the suction of the compression process. Once filtered, it is sent back into the compression chamber again through an oil return line and an oil supply line which are connected to the oil inlets.

There are three types of industrial vacuum pump filters:

They are two different components of an oil mist separator.

Busch genuine oil filters (1) are used to remove contaminants from the oil that lubricates the compression chamber. They are located outside of the vacuum pump and are connected to the oil separating chamber (2). This filter ensures that the oil can be reused, remains clean, and retains excellent lubrication and sealing properties.

Busch genuine exhaust filters (3) are installed upstream of the outlet inside the oil mist separator. They catch and separate oil mist from the pumped medium before it is expelled through the exhaust. This ensures that only clean air is released into the atmosphere, and all captured oil can be returned to the system.

An oil mist separator is responsible for recycling the oil that lubricates the compression chamber and for ensuring that oil particles are not expelled via the exhaust. It consists of an oil separating chamber, an oil filter, and an exhaust filter (also known as oil mist filter).

These drawings are for illustrative purposes only and do not show all details.

The pumped medium containing oil particles enters the oil separating chamber (1). Due to gravity, the oil drops to the bottom of the chamber (2), and is pumped into the oil filter through the suction of the compression process (3). Unwanted particles, such as dust and debris, are removed. The pumped medium continues towards the exhaust filter (4) installed upstream of the outlet. It captures and separates oil mist from the pumped medium before it is expelled through the exhaust. The filtered oil is sent back into the compression chamber through an oil return line (5) and an oil supply line (not depicted in the illustration above) which are connected to the oil inlets.

You should only use Busch Genuine Spare Parts in your Busch vacuum pump. Third-party oil filters have not been tested according to our high standards. Only Busch Genuine Spare parts guarantee the optimum performance of your vacuum pump and keep your warranty valid.

They are individually marked with the Busch logo.

No, every vacuum pump model has its own corresponding oil filter, and processes with extended oxygen content require specific filters. Find the right oil filter for your vacuum pump in our parts finder.

Yes, it does. We provide two kinds of oil filters: One for standard and ATEX applications and one for applications with extended oxygen content (mandatory for applications above 21% of oxygen). You can find the oil filters suitable for your vacuum pump in our parts finder. If you are uncertain about which filter to choose for your process, please contact your local Busch expert.

No. We only design, build and test our parts for Busch vacuum pumps.

We advise you to change the oil filter when you change the oil inside your vacuum pump. This avoids contaminating the new oil with previously collected particles.

Changing the filter is a vital component of a regular maintenance schedule. If you do not change your filter regularly, the performance of your vacuum pump will be affected, and energy consumption will be higher.

Please refer to the instruction manual. You can also watch our how-to video for R5 vacuum pumps on YouTube.

Your local Busch service expert will be happy to help. We can carry out the maintenance for you, give you tips and tricks, or offer assistance if you are having any issues. You can also make use of our service contracts: Let us take responsibility for your maintenance while you concentrate on your core business.

If your vacuum pump takes multiple oil filters, such as the R5 RA 1000/1600 B, they should all be replaced at the same time.