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Quick Details

  • Structure: Deep Groove
  • Type: Ball
  • Brand Name: FreeRun
  • Bore Size: 10 mm
  • Outside Diameter: 22 mm
  • Model Number: 6900-2RS/C
  • Precision Rating: ABEC-1,ABEC-3,ABEC-5
  • Seals Type: 2RS (rubber seals on both sides)
  • Number of Row: Single Row
  • Place of Origin: Fujian, China (Mainland)
  • Diameter: 10x22x6mm
  • Cage/Retainer type: Crown retainer,Ribbon Retainer or without retainers
  • Retainer material: Stainless Steel,PTFE, Nylon, PEEK,PA6,6GF
  • Quality-standard of balls: G10 as DIN 5401, ISO 3 290
  • Hardness of balls and rings: 59-65 HRC
  • Lubrication: Oil,Grease,Dry
  • Material of balls: SI3N4 Balls (Ceramic balls)
  • Internation Clearance Codes: C0,C2,C3,C4,C5
  • Other Calling Of Bearing: Kugellager,rodamientos,lager,lozysko,forsynet,rolamento
  • Other Calling Of Miniature Bearing: Miniaturkugellager,micro-cuscinetto,miniaturni loziska

Packaging & Delivery

Packaging Details 10 pcs in plastic tube,10 tubes in one paper box.
Delivery Time it depends on the order quantity

RC ball bearing 6900-2RS/C Ceramic ball bearing 10x22x6mm

FreeRun is a specialized manufacturer of Hybrid Ceramic Bearing,Full Complement ceramicbearings,Ceramic Balls.


Product Description:


Size: 6900-2RS/C
Inside Diameter: 10mm
Outside Diameter: 22mm
Width: 6mm
Material:Chrome steel,

Ceramic balls

Seals / Shields: 

2RS ( rubber seal on both sides)

Inch  Diameter:0.3937x0.8661x0.2362
Max Load:Dyn <Cr(N)>:2695
  Stat<Cor(N)>: 1273
RPM of grease Bearings (x1000): 34
RPM of oil Bearings (x1000) : 41


The same size can be made of different materials, including:
Stainless Steel Bearings 

Chrome Steel Bearings   

Ceramic Bearings



Hybrid Ceramic Bearing:

Ceramic bearings offer a significant performance improvement from those made from traditional steel. Our ceramic bearings are manufactured from silicon nitride (Si3N4), an exceptionally hard non-metallic material rated for speeds to 2 million dN, offering a wide selection of benefits.

Hybrid Bearings have steel rings and ceramic balls. Si3N4 Ball is the most popular for the balls as it has only 40 percent of the density of bearing steel but is much harder giving greater wear resistance. Zirconia is heavier with 75 percent of the density of steel so is less suitable for hybrid bearings.. 

Full Ceramic Bearing :

Full Ceramic Bearings are made entirely of ceramic material and are superior to common steel bearings in many ways. Ceramic is the perfect material for any application seeking to achieve higher RPM’s, reduce overall weight or for extremely harsh environments where high temperatures and corrosive substances are present. Applications such as cryopumps, medical devices, semiconductors, machine tools, turbine flow meters, food processing equipment, robotics and optics. Ceramic materials commonly used for bearings are Silicon Nitride (Si3N4), Zirconia Oxide (ZrO2), or Silicon Carbide (SiC.)

Ceramic Balls:

We are special in making Silicone Nitride Balls (Si3N4 Balls,Zicronia Balls (ZrO2 Balls),Sic Ceramic Balls , Aluminum Oxside Valve (AI203) ceramic balls.

Compared with steel, ceramic materials are noted for their better or particular characters, such as wear-resistance, corrosion resistance, high temperature resistance, electrical insulation (except SiC), non-magnetic, high strength, high rigidity, and low specific gravity. These properties qualify them for replacing steel to make bearings serve in conditions of higher speed, harsh environment and less lube, and decrease wear, noise, vibration and maintenance time of bearings, and eventually increase performance, reliability and life of bearings.


Electrical resistance: Si3N4 best, then ZrO2, then SIC which is conductive.

High temp resistance:SiC best (1100C), then Si3N4 (1000C), then ZrO2 (400C)

Corrosion resistance:SIC (excellent), then Si3N4 (very good) and ZrO2 (good)

Load capacity:SIC highest then Si3N4, then ZrO2

Fracture toughness:rO2 best, then Si3N4, then SiC


Packaging & Shipping:

Package: 10 pcs in plastic tube, 10 tubes in one paper box(or depends on you).


1. Express (TNT, EMS, DHL, UPS, FedEx, SF Express etc)

2. Chinese Regular Mail/ Post Mail

3. By Sea.

Payment terms: L/C, T/T, PayPal, Western Union

Our Services:

1)High Speed and Long Service Life Products

2)Supply quickly from large Stock

3)OEM Service

4)Any inquiries will be replyed within 24 hours.



The advantage of FreeRun Ceramic Ball Bearings:   

1.High precision bearings,P4 ,P5 and P6.

2.Rings are made of refined Chrome steel.stainless steel 440C
3.Cage:Peek & PTFE cage .(can assure constant working under 250 centigrade)and peek cage also is the ideal cage for the high speed as it can provide the lubrication during  bearing working, and it has the property of self-lubrications.However for normal applications, steel cage and Nylon cage is enough.
4. Balls: we use G3,G5 high precision Si3N4 ball for the high speed.
5. Radial clearance: Normal C0,or C3.
6.Not only for the high speed, but also Hybrid bearings has the
insulation functions. Hence for the small size of bore dia.40mm ,
also can be used for the insulation bearing purpose.
7.Full ball hybrid also can be produce as per our production picture.
All-ceramic bearings have good to excellent corrosion resistance, are non-magnetic and, apart from silicon carbide, are electrically insulating. All-ceramic bearings can be used in high to very high temperatures if supplied without a cage (full complement).



What is the delivery time of your bearings?
For Normal sizes bearing:2-7 workdays
For Bulk order:7-15 workdays
If we want to get a samll order for testing,Can you meet our needs?
We accept small order,we hope to bulid long-term business relationship with you.
Can you supply free sample for me?
Of course,we are galdly to supply free samples for you.


FreeRun bearing Application:

Products Pictures:

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