CERAMIC Bearings (2) 4x11x4mm PREMIUM Contactless Metal Shields 694zzC Brushless
Packet of 2 – 4x11x4mm (MR694-zzC) Ceramic Bearings to suit Brushless Motors. These bearings come with our Premium Contactless Metal Shields that not only act as a lubricant seal, but being contactless allows for higher RPM, less friction and less heat. Ceramic balls are lighter for less centrifugal force allowing motors to spin at a higher RPM and also to accelerate faster.
This item is for 2 bearings.
Plaig Bearings are a stronger, more reliable bearing with greater heat resistance and superior life to the standard factory bearings. We have all other sizes of bearings for RC cars and sell a large range of complete kits. If you can’t find the right size please contact us.
Bearing Materials
Silicon Nitride Ceramic Balls (Si3N4)
• Very good corrosion resistance to water, salt and chemicals
• Good high temperature performance up to 1,000°C
• Non magnetic and electrically insulated
• Lighter than steel balls
• Very low heat expansion, less expansion and contraction between heating and cooling.
Ceramic Bearings can run faster than all steel bearings due to the lower centrifugal force generated by the ceramic balls, the speed increase for Ceramic Bearings is 30 - 40% with adequate lubrication. Ceramic Bearings are less subjected to ball skidding under initial acceleration / torque. This allows the bearing to last longer and be far more reliable. Low heat expansion allows the bearing retainers to last longer. There are no downsides to Ceramic Bearings other than they cost more to manufacture.
Contactless Metal Shields
Our Contactless Metal Shields are designed to prevent larger particles from entering the bearing and also to keep lubricant inside the bearing. As the shields make no contact with the inner ring, they allow higher RPM and faster acceleration.
Bearing Retainer / Cage
Retainers keep the balls evenly spaced around the raceway preventing ball to ball contact and thus allowing higher speeds. They also help to retain grease around the balls and raceways. For greater accuracy and to prevent any additional friction, it is important that the retainer is not allowed too much radial movement.
Our Ceramic bearings use a Polymite Retainer.
Why Buy Plaig Bearings
Plaig Bearings have been put to the test since 2008, with over 500,000 Bearings being sold across Australia. Our bearings have been tested under the harshest conditions, by the best RC Drivers, Fishermen, Engineers, Cyclists and Hobbyists.
There are many theories on what makes a good bearing, but putting it to the test in the harshest conditions possible is the only way to practically assess whether a bearing will stay in one piece or not. The best RC drivers with the best cars will not sacrifice a trip interstate or even internationally, to have a bearing failure during a critical race.
The best Fishermen do not want a Reel failure whilst reeling in that big fish. Many professionals put their trust in our Bearings. Value for money is a priority for Plaig Bearings, providing exceptional quality for reasonable prices is what we do best.
Shipping & returns
All orders are sent using Australia Post Express Post.
Please note that if you have made an error with your address, we are not liable for the lost package or the cost to replace it.
Returns
All Returns are accepted as per eBay's Policy.
If you have purchased an item by error, it can be returned for a full refund.
All returns must be received back prior to a refund being issued.
