Catalog: Miniature and Instrument Bearing Catalog | |
| when choosing the proper bearing for your application these factors include ... and seals shields and seals are used in ball bearings to retain lubricants and ... critical surfaces shields are popular for most applications seals are used where ... minimal clearance to light contact is required seals offer greater ... materials miniature and instrument bearings are normally made of either stainless ... steel nhbb offers 440c stainless steel for applications that require corrosion ... resistance and 52100 chrome steel for maximum fatigue life these materials ... dimensional stability and are suitable for most applications cages the cage also ... that separates and positions the balls at approximately equal intervals around ... selection of a bearing cage is critical for meeting the load speed and temperature ... | |
| radial and axial play raceway curvature contact angle contact angle contact angle is ... between a plane perpendicular to the ball bearing axis and a line joining the two ... points where the ball makes contact with the inner and outer raceways the ... initial contact angle of the bearing is directly ... higher the radial play the higher the contact angle the table of contact angles as ... gives nominal values under no load for support of pure radial loads a low ... contact angle is desirable where thrust loading is predominant a higher contact ... angle is recommended the contact angle of thrust-loaded bearings ... provides an indication of ball position inside the raceways when a ... thrust load is applied to a ball bearing the balls will move away from ... | |
| engineering preload and duplex ball bearings ball bearings are preloaded for a ... are essentially two ways to preload a ball bearing either by using a spring or ... spring or a wavy washer which applies a force against the inner or outer ring of the ... compressed length the use of a spring for preloading eliminates the need for ... location tolerances on machined parts for example retaining rings can be used in ... the assembly must withstand reversing thrust loads a solid stack method may be used ... precise location control is required for example as in a precision motor the use ... of built-in preload is suggested ball bearings with built-in preload are often ... referred to as duplex ball bearings when the set of bearings is assembled ... the thrust load needed to make the adjacent faces ... | |
| evaluating static load conditions any forces exerted during assembly and test must ... life l10 in millions of revolutions for ball bearing application is l10 c/pe3 ... with industry standards with allowance for the effects of curvature on the ... load resulting from the application of thrust load life calculations can be ... the lubricant miniature and instrument ball bearings are normally made of either ... changes the dynamic load rating c for a radial or angular contact ball ... which a group of apparently identical bearings can theoretically endure for a rating ... one million revolutions has been chosen for ease of calculation the dynamic load ... 1029 include the effects of race-to-ball conformity and are in accordance with ... that the load rating published for 52100 be reduced by 20 for 440c this is ... | |
| life while miniature and instrument bearings may fail from causes other than fatigue ... and inches step given radial load thrust load speed obtain lubricant viscosity ... rating read static load rating read ball size select radial play range obtain ... initial contact angle using db and table obtain t1 from ... life modifier a2 from the table for lb10 obtain design life l where l a1 ... | |
| engineering tı nomograph lbs or kg for ball size less than 1/8 c° static capacity ... enter 300 200 100 100 t thrust enter t1 read x ° initial contact angle ... | |
| engineering tı nomograph lbs or kg for ball size 1/8 and larger c° static capacity ... enter 1000 t thrust enter 1000 t1 read 1000 x y 500 500 400 ... 200 500 200 100 100 200 50 50 ° initial contact angle enter 5° 10° 15° 20° b t1 20 100 ... | |
