RC Cars & Trucks | RC Planes & RC Helicopter Parts - A Main Hobbies
A Main Hobbies Forums
  Home > RC Cars & Trucks > Parts > Serpent > S811 Cobra GT-e My Account  |  Shopping Cart  |  Wish List   
Find Products
Categories
Soaring Savings
RC Airplanes »
RC Boats »
RC Cars & Trucks »
  Bodies »
  Electric Motors & ESC's »
  Engine Accessories »
  Engine Parts »
  Engines »
  Kits »
  Off Road Tires & Wheels »
  On Road Tires & Wheels »
  Option Parts »
  Parts »
    ARC »
    Agama Racing »
    Arrma RC »
    Atomik RC »
    Axial »
    CEN Racing »
    Calandra Racing Concepts »
    Caster Racing »
    Electrix RC »
    GMade »
    HPI Racing »
    HoBao »
    Hot Bodies »
    JQ Products »
    Kyosho »
    LaTrax »
    Losi »
    MRP »
    Misc Parts
    Motonica »
    Mugen Seiki »
    OFNA »
    Pro-Line »
    RB Products »
    RC4WD »
    Racers Edge »
    Redcat Racing »
    S-Workz Racing »
    Schumacher »
    Serpent »
      720
      733
      747
      960
      966
      966E
      977
      S100
      S120L
      S120LT
      S120LTX
      S411
      S411 2.0 Eryx
      S411 3.0 Eryx
      S811 Cobra
      S811 Cobra 2.0
      S811 Cobra GT
      S811 Cobra GT-e
      S811 Cobra T
      S811e Cobra
      S811e Cobra T
      Spyder SRX-2 MM
      Spyder SRX-2 RM
      Spyder SRX-2 SC
    Shepherd Micro Racing »
    Sportwerks »
    T.O.P. Racing »
    Tamiya »
    Team Associated »
    Team Durango »
    Team Magic »
    Tekno RC »
    Thunder Tiger »
    Traxxas »
    Vaterra »
    Venom »
    Vintage Parts
    X Factory »
    XRAY »
    XTM Racing »
    Yokomo »
    ZD Racing »
    enRoute »
  Shock & Diff Oil »
RC Helicopters »
RC Multirotor »
Apparel »
Batteries »
Cameras & Accessories »
Electric Accessories »
Fuel & Accessories »
Glue, Oil & Cleaners »
Hardware & Fasteners »
Magazines, Books & Videos »
Model Rockets »
Model Trains »
Novelty Items
Paint & Supplies »
Plastic Models »
Puzzles
Radios & Accessories »
Simulators »
Slot Cars »
Stickers & Decals
Storage & Transportation »
Tools »
Gift Vouchers
Scratch & Dent
Clearance Items
Specials
Manufacturers Click For More
What's New Click For More
Hobbywing 4274 Lite Sensorless Brushless Motor (2000kV)
Hobbywing 4274 Lite Sensorless Brushless Motor (2000kV)
MAP: $94.99
Information
About UsAbout Us
Customer DiscountsCustomer Discounts
Discussion ForumsDiscussion Forums
EmploymentEmployment
FAQ: Cancelling OrdersFAQ: Cancelling Orders
FAQ: Gift VouchersFAQ: Gift Vouchers
FAQ: Pre Order ProductsFAQ: Pre Order Products
FAQ: Rewards PointsFAQ: Rewards Points
FAQ: Wish ListFAQ: Wish List
Getting Started: CarsGetting Started: Cars
Getting Started: HelisGetting Started: Helis
Getting Started: PlanesGetting Started: Planes
Getting Started: TrucksGetting Started: Trucks
Guide to Car/Buggy KitsGuide to Car/Buggy Kits
How to Use Our SiteHow to Use Our Site
International ShippingInternational Shipping
Knowledge BaseKnowledge Base
Partner Web SitesPartner Web Sites
Payments AcceptedPayments Accepted
Privacy NoticePrivacy Notice
Product NoticesProduct Notices
Product ReturnsProduct Returns
ProTek R/C ManualsProTek R/C Manuals
Shipping & ReturnsShipping & Returns
Shipping RestrictionsShipping Restrictions
Site MapSite Map
Sponsorship RequestsSponsorship Requests
Store LocationsStore Locations
Team BlogTeam Blog
Terms Of UseTerms Of Use
Why Shop With Us?Why Shop With Us?
From The CEO BlogFrom The CEO Blog
Press ReleasesPress Releases
Contact UsContact Us

ProTek R/C Ceramic 15x21x4mm Dual Sealed "Speed" Ball Bearings (2)
[PTK-6702-RSZZ-C]

    Low Price: $14.25
ProTek R/C Ceramic 15x21x4mm Dual Sealed "Speed" Ball Bearings (2)
Click to enlarge

This item earns up to 14
Customer Rewards Points!


With your purchase, receive at no cost:

In Stock!
Free Shipping Eligible!
(See Details)

Wish List!
Buy Now!
 Tell A Friend about this product

This is a pack of two ceramic 15x21x4mm dual sealed "Speed" ball bearings. ProTek R/C "Speed" bearings are high performance ceramic ball bearings designed for the R/C racing enthusiast.

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:
  • Serpent S811 Cobra 
  • Serpent S811 Cobra T 
  • Serpent S811 Cobra GT 
  • Serpent S811 Cobra GT-e 
  • Serpent S811 Cobra 2.0 
  • Serpent 977 
  • Mugen Seiki MBX6T 
  • Mugen Seiki MBX6R 
  • Mugen Seiki MBX7 
  • Mugen Seiki MBX7E ECO 
  • Mugen Seiki MBX6 
  • S-Workz Racing S350 BK1 
  • S-Workz Racing S350 BE1 
  • S-Workz Racing S350 BX1 
  • S-Workz Racing S350 BX1e 
  • ProTek R/C Ceramic 15x21x4mm Dual Sealed "Speed" Ball Bearings (2)
    Click to enlarge
    This product was added to our catalog on Thursday, December 18, 2008.
    Reviews
    Quantity:  Wish List! Buy Now!
    You may also like...
    ProTek R/C Ceramic 8x16x5mm Rubber Sealed "Speed" 1/8 Wheel Bearings (2)
    ProTek R/C Ceramic 8x16x5mm Rubber Sealed "Speed" 1/8 Wheel Bearings (2)
    Novarossi KEEP OFF .21-7XL 7-Port .21 Off Road Engine w/Ceramic Rear Bearing (Turbo)
    Novarossi KEEP OFF .21-7XL 7-Port .21 Off Road Engine w/Ceramic Rear Bearing (Turbo)
    AKA Racing "MULE" Rolling Gear Bag
    AKA Racing "MULE" Rolling Gear Bag
    Airtronics M12 FHSS-4 2.4GHz Radio System w/92014 4-Channel Receiver
    Airtronics M12 FHSS-4 2.4GHz Radio System w/92014 4-Channel Receiver
    Novarossi KEEP OFF 21-4 4-Port .21 Competition Off Road Engine w/Ceramic Rear Bearing (Turbo)
    Novarossi KEEP OFF 21-4 4-Port .21 Competition Off Road Engine w/Ceramic Rear Bearing (Turbo)
    O.S. Speed 21XZ-B Spec II "Tuned" Off-Road Competition Buggy Engine
    O.S. Speed 21XZ-B Spec II "Tuned" Off-Road Competition Buggy Engine
    ProTek R/C "Prodigy 612 DUO AC" LiPo/LiFe/NiMH AC/DC Battery Charger (6S/12A/100W x 2)
    ProTek R/C "Prodigy 612 DUO AC" LiPo/LiFe/NiMH AC/DC Battery Charger (6S/12A/100W x 2)
    Mugen Seiki MBX7 M-Spec 1/8 Off-Road Competition Race Roller Buggy
    Mugen Seiki MBX7 M-Spec 1/8 Off-Road Competition Race Roller Buggy
    Shopping Cart Click For More
    0 items
    Manufacturer Info Click For More
    ProTek R/C
    More Other ProTek R/C products
    Best Sellers Click For More
    01. ProTek R/C 8x16x5mm Dual Sealed "Speed" ...
    02. ProTek R/C 8x16x5mm Rubber Sealed "Speed...
    03. ProTek R/C 8x14x4mm Rubber Sealed Flange...
    04. ProTek R/C 6x10x3mm Rubber Sealed "Speed...
    05. ProTek R/C 8x16x5mm Metal Shielded "Spee...
    06. ProTek R/C Ceramic 8x16x5mm Rubber Seale...
    07. ProTek R/C 6x10x3mm Metal Shielded "Spee...
    08. Serpent 5x10x4mm Ball Bearing (2)
    09. Serpent Gear Coupler Rubber Boot Set (2)
    10. Serpent Nylon Shock Part Set (10)
    Specials Click For More
    JQ Products "THE Car" 1/8 Competition PRO Buggy Combo Kit w/16 Dog Bones FREE! (White Edition)
    JQ Products "THE Car" 1/8 Competition PRO Buggy Combo Kit w/16 Dog Bones FREE! (White Edition)
    MAP: $599.99
    Reviews Click For More
    Write a review on this product!
    Write a review on this product!
    See A Main Hobbies Reviews at Bizrate.com This site protected by Trustwave's Trusted Commerce program Click to verify BBB accreditation and to see a BBB report.
    Copyright © 2014 A Main Hobbies. All Rights Reserved.
    All original wording and photographs used on this website are the property of A Main Hobbies, and may not be used without prior written consent.