Overview

Quick Details

• Type:

• BALL

• Structure:

• Deep Groove

• Applicable Industries:

• Manufacturing Plant, Retail

• Bore Size:

• 4 mm

• Model Number:

• 684-2RS/C

• Precision Rating:

• ABEC-1,ABEC-3,ABEC-5,ABEC-7

• Seals Type:

• 2RS (rubber seals)

• Number of Row:

• Single row

• Place of Origin:

• Fujian, China

• Diameter:

• 4x9x4mm

• 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

• Vibration Level Codes:

• V4,V3,V2,V1

• 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

Supply Ability

• Supply Ability

• 1000000 Piece/Pieces per   Month

Packaging & Delivery

• Packaging Details

• 10 pcs in plastic tube,10 tubes in one paper box.

• Port

• Fuzhou

ABEC-5 Hybrid Ceramic Ball bearing 4x9x4mm 684 -2RS/C SI3N4 Ceramic Ball Bearing 4mm Bearing

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

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.