LongLife Insulate

CeramicSpeed Bearings

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CeramicSpeed develop and produce ball bearings which create significant economic advantages when used in industrial applications.

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CeramicSpeed LongLife Insulate bearings are your guarantee against stray currents!

CeramicSpeed LongLife Insulate bearings have a 70 % lower energy consumption and 4-8 times longer lifetime. The ceramic balls are nonconductive and have an insulating ability of at least 2.5kW; this is much higher in larger balls. In comparison, bearings from competing manufacturers with an insulating coating typically have an insulating ability of up to 1kW; provided that the coating is not damaged – for example when the bearing is mounted. In practice this protection isn’t always sufficient, meaning that these bearings are also vulnerable to damage by stray currents.

CeramicSpeed LongLife Insulate bearings are your guarantee against this type of damage!

As the insulating effect comes from the properties of the CeramicSpeed balls themselves, rather than an applied coating, it’s much easier to work with the bearing, as you avoid the risk of damaging the coating when fitting the bearing. In addition to being protected from the passage of electrical currents, you’ll find that the operating temperature is 10-20°C lower, and the lifetime is 4-8 times longer than traditional steel bearings.


  • Guarantee against stray currents
  • The insulating ability is 80-800 times higher than steel bearings with an insulating coating
  • An operating temperature which is 14-470C lower than that of standard bearings 
  • 70% lower energy consumption
  • Higher rotating speed – typically 50% higher than steel bearings
  • 4-8 times longer lifetime
  • Short payback cycles (often after the first replacement cycle)
  • Better performance under poor lubrication conditions
  • The bearings have an extreme resistance to contamination
  • Bearing solutions for your specific needs

Advantages of CeramicSpeed bearings over coated bearings in electric motors

Is it always a good idea to use insulated bearings in electric motors?

Yes! – Especially if the motor is frequency controlled

Leading motor manufacturers agree that stray currents can cause damage to bearings in frequency controlled motors. There are a variety of solutions to this problem, but the most common is the use of insulated bearings. Insulated bearings aren’t always used in smaller motors, however stray currents can cause damage in motors as small as 1-2 kW. 

Do both bearings need to be insulated?

Not necessarily – in some cases insulated bearings are only used in the non-drive side, where the smallest bearings are mounted. A single insulated bearing breaks the current, but doesn’t always prevent stray currents passing through the bearing. If you want to increase the reliability of the motor, then we recommend that CeramicSpeed bearings are used on both the drive side and non-drive side. This provides optimal durability and lifetime, and completely prevents electrical currents passing through the bearing.

If the drive side bearing is a roller bearing, then it can be difficult to obtain an insulated bearing, but in some cases the bearing can be replaced with a hybrid ball bearing.

Are there different types of insulated bearings?

Yes! – There are bearings with insulated coatings and bearings with ceramic balls.

The most common insulated bearings use steel balls, with a 200 micron insulating layer applied to either the inner or the outer ring. The coating has an insulating ability of up to 1kW – assuming it has not been damaged (for example in mounting). This type of bearings often experience electrical damage.

Bearing analysis – what can failed bearings tell us?

A lot! A failed bearing can be a valuable source of information, and the key to improvement.

Let CeramicSpeed analyse your failed bearings – for free!

If you send us your failed bearings, then we will analyse them, and send you a report assessing the damage, and suggesting potential solutions – completely free and without obligation. 

Unfortunately failed bearings are often replaced with an equivalent bearing, without checking how the bearing could be improved. 

Energy saving

The efficiency of CeramicSpeed bearings can lead to significant savings in energy use.

We tested two bearings with friction free seals, running at 3,000 RPM: A standard 6318 bearing against an identical bearing with CeramicSpeed 6318-HC5 balls. The bearing fitted with CeramicSpeed balls used 43% less energy.

The higher the speed, the greater the potential for energy saving. 

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CeramicSpeed Bearings
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CeramicSpeed Bearings
+45 9740 2544