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ProTek R/C Ceramic 8x16x5mm Dual Sealed "Speed" 1/8 Wheel Bearings (2)
[PTK-688-RSZZ-C]

    Low Price: $11.75
ProTek R/C Ceramic 8x16x5mm Dual Sealed "Speed" 1/8 Wheel Bearings (2)
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This is a pack of two ceramic 8x16x5mm dual sealed "Speed" 1/8 wheel bearings. ProTek R/C "Speed" bearings are high performance ceramic ball bearings designed for the R/C racing enthusiast.

These 8x16x5 dual sealed bearings are the standard bearing for 1/8th scale off-road vehicles, both for internal bearings in the diff cases as well as external wheel bearings. These bearings feature a metal shield on one side and rubber seal on the other. Please check the manual that came with your vehicle for the correct size if you are not certain.

Why Ceramic?
Our ProTek Ceramic Bearings are a hybrid type, featuring Chrome Steel inner and outer races, with Si3N4 silicone nitride ceramic balls. Ceramic bearings have many advantages over standard steel bearings, such as decreased weight, higher RPM capabilities, increased corrosion and wear resistance,  as well as reduced friction and vibration.  

So next time you purchase bearings, when you ask yourself "Why should I buy Ceramic?" You should be asking yourself "Why shouldn't I?"

Advantages of Ceramic:

  • High Speed: Hybrid bearings can reach a resistance level of 1,200,000dN with grease lubrication, due to reduced slip, wear extent and heat productivity.
  • Lightweight: The weight of ceramics is 60% lighter than steel, which decreases the centrifugal force and the overall bearing weight.
  • Long Service Life: The service life of hybrid bearings is 3 to 5 times longer than that of steel bearings in comparable working conditions.
  • Self Lubricating: Even when poorly lubricated or with no lubrication, ceramic bearings will continue to function longer than steel bearings under the same level of stress due to their self lubricating properties.
  • Corrosion Resistance: Hybrid bearings have excellent corrosion resistance, and will continue to function while corroded.
  • High Rigidity: The elastic ration of ceramics is 1.5 times greater than that of bearing steel, this dramatically increases the rigidity of the bearing.
  • Low Friction: Ceramic materials have a low friction force. Even under the conditions of boundary lubrication, the surfaces are extremely smooth, so its friction force is low and the rotational friction moment is low.
  • Wear Resistant: The micro-hardness of ceramics can reach a Vickers Hardness level of HV1700 kg/mm2, which dramatically increases the wear-resistance.
Note: It is important with ceramic bearings to ensure that the bearings are properly shimmed (do not shim them too tight), and that you keep them lubricated to ensure long life. Ceramic bearings run smoother with less friction than regular bearings, and should last three to four times as long. We highly recommend the use of Tri-Flow Teflon based bicycle lubricant for ceramic bearings. Teflon lubricant works the best as the Teflon will impregnate the balls for longer life.

ProTek R/C is an A Main Hobbies brand.


Part Compatibility:
  • Losi LST 
  • Losi LST2 
  • Hot Bodies Lightning Pro 2 
  • Hot Bodies Lightning Stadium 
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  • Hot Bodies D812 
  • Hot Bodies D8 
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  • Kyosho Inferno MP9 TKI3 
  • Kyosho Inferno ST-R 
  • Kyosho Scorpion XXL 
  • Kyosho Inferno ST-RR 
  • Kyosho Inferno MP9 
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  • OFNA Jammin X1-CR 
  • OFNA Jammin X1-CRT 
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  • OFNA Hyper SS 
  • OFNA Hyper 7 TQ 
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  • Serpent S811 Cobra GT-e 
  • Serpent 977 
  • Sportwerks Mayhem 
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  • Mugen Seiki MBX6E ECO 
  • Mugen Seiki MBX6R 
  • Mugen Seiki MBX7 
  • Mugen Seiki MBX7E ECO 
  • Mugen Seiki MBX5T 
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  • HoBao Hyper 7 TQ 
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  • Blade 700 X Pro 
  • ProTek R/C Ceramic 8x16x5mm Dual Sealed "Speed" 1/8 Wheel Bearings (2)
    Click to enlarge
    This product was added to our catalog on Monday, March 19, 2007.
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    Quantity:  Wish List! Buy Now!
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