-Description
Rubbing surfaces, usually with lubricant; some bearings use pumped lubrication and behave similarly to fluid bearings.
-Friction
Depends on materials and construction, PTFE has coeff…
-Description
Faces of bearing are kept separate by magnets (electromagnets or eddy currents)
-Friction
Zero friction at zero speed, but constant power for levitation, eddy currents are often induce…
-Description
Off-center bearing rolls in seating
-Friction
Low
-Stiffness
Low due to flexing
-Speed
Low
-Life
Adequate (requires maintenance)
-Cautions
Mainly used in low-load, high precisi…
-Description
Fluid is forced between two faces and held in by edge seal
-Friction
Zero friction at zero speed, low
-Stiffness
Very high
-Speed
Very high (usually limited to a few hundred feet p…
-Description
Material flexes to give and constrain movement
-Friction
Very low
-Stiffness
Low
-Speed
Very high.
-Life
Very high or low depending on materials and strain in application. Usuall…
Designation Boundary dimensions(mm) Load ratings(kN) Speed ratings(rpm) mass
[kg]
d D B r1,r2 Min a an bn rn dyn Cr stat Cor grease oil
QJ204.MPA 20 47 14 1 23 -- -- -- 22.7 16 12000 17000 0.14
…
We can produce all kinds of slewing bearings and rings which diameter from 179mm to 4.5 meter. Wide range of products without gear, with external or internal gear, in ball-, roller- or combined form.
1: Attained CE and ROHS certification.
2. Structure: inner ring, outer ring, a group of balls and retainer
3. Material: carbon steel, chrome steel, or as your requirements.
Angular contact ball b…
ECROBOT CO., Ltd, Business Registration Number : 220-88-71747, CEO J.W.Park, TEL : +82-2-552-7676, E-mail : E-mail : Contact us Address : (Hwanghwa B/D 11F, Yeoksam-dong)320, Gangnam-daero, Gangnam-gu, Seoul, South Korea