bearing materials chemical composition material high carbon chromium steel stainless stell symbol suj2 sus440c c 0.95 ~1.10 0.95 ~1.20 si 0.15 ~0.35 <1.00 mn <0.50 <1.00 p <0.025 <0.040 s <0.025 <0.030 cr mo 1.30 ~1.60 16.00 ~18.00 <0.08 <0.75 equivalent sae52100 ais1440c shields and seals
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metric series flanged bore outer flange radius width flange open diameter diameter diameter width d d rmin b bf df 1.000 3.000 4.000 4.000 4.000 5.000 6.000 5.000 5.000 6.000 6.000 7.000 7.000 6.000 7.000 8.000 8.000 6.000 7.000 8.000 8.000 9.000 9.000 10.000 7.000 8.000 9.000 10.000 11.000 12.000 13.000 16.000 8.000 3.80 5.00 4.80 5.00 6.50 7.50 6.10 6.20 7.50 7.20 8.20 8.50 7.10 8.50 9.20 9.50 7.20 8.10 9.20 9.50 10.20 10.50 11.50 8.00 9.20 10.30 11.20 12.50 13.50 15.00 18.00 9.20 0.05 0.10 0.10 0.15 0.10 0.10 0.10 0.10 0.15 0.15 0.15 0.15 0.15 0.15 0.20 0.15 0.10 0.15 0.15 0.15 0.20 0.15 0.15 0.10 0.15 0.15 0.20 0.15 0.20 0.20 0.30 0.10 1.000 1.600 1.800 1.200 2.000 2.500 1.500 2.000 2.300 2.500 2.500 2.800 1.800 2.500 2.500 2.800 2.000 2.000 2.500 3.000 2.500 3.000 4.000 2.000 2.000 2.500 3.000 4.000 4.000 5.000 5.000 2.000 0.300 0.500 0.400 0.400 0.600 0.600 0.500 0.600 0.600 0.600 0.600 0.700 0.500 0.700 0.600 0.700 0.600 0.500 0.600 0.700 0.600 0.700 1.000 0.600 0.600 0.600 0.6
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metric series extra thin bore outer radius width diameter diameter open double shield d 10 d 15 15 19 19 22 26 30 18 21 21 24 28 32 21 24 24 28 32 35 23 26 26 30 35 40 27 32 37 42 rmin 0.05 0.15 0.30 0.30 0.30 0.30 0.60 0.20 0.30 0.30 0.30 0.30 0.60 0.20 0.30 0.30 0.30 0.30 0.60 0.20 0.30 0.30 0.30 0.30 0.60 0.20 0.30 0.30 0.60 b 3 4 5 7 6 8 9 4 5 7 6 8 10 4 5 7 7 9 11 4 5 7 7 10 12 4 7 9 12 mr6700 maximum basic basic speed load static rpm rating load grease ···oil··· kgf rating kgf c li lo ui uo no ball balls size co 34 34 56 56 36000 43000 66 66 133 133 208 354 361 72 149 149 224 396 529 81 162 162 335 433 591 80 175 11.21 13.60 11.21 13.60 12 mr6700zz 36000 43000 14.20 11 1.588 11 1.588 10 2.381 10 2.381 9 7 7 3.175 4.762 4.762 mr6800 mr6800zz 34000 40500 mr1910 mr1910zz 34000 40500 mr6900 mr6900zz 30000 36000 mr6000 mr6000zz 29000 34000 mr6200 mr6200zz 25000 30000 mr6701 mr6701zz 31000 37000 mr6801 mr6801zz 30500 36000 mr63801 mr63801zz 30500 36000 mr6901 mr6901zz 27000 32500 m
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metric series extra thin flanged bore outer flange radius width flange open diameter diameter diameter width d 10 d 15 15 19 19 22 18 21 21 24 21 24 24 28 23 26 26 30 27 32 37 32 37 42 37 42 47 df 16.5 16.5 21 21 25 19.5 23 23 26.5 22.5 26 26 30.5 24.5 28 28 32.5 28.5 35 40 34 40 45 39.0 45 50.0 rmin 0.15 0.15 0.3 0.3 0.3 0.20 0.30 0.30 0.30 0.2 0.30 0.30 0.30 0.20 0.30 0.30 0.30 0.20 0.30 0.30 0.20 0.30 0.30 0.20 0.30 0.30 b 3 4 5 7 6 4 5 7 6 4 5 7 7 4 5 7 7 4 7 9 4 7 9 4 7 9 bf double maximum maximum basic basic shield speed speed load static li lo ui rating load grease oil kgf rating c kgf co 43000 mf6700 36000 44 34 11.21 13.60 no ball uo balls size 0.8 0.8 1.0 1.5 1.5 0.8 1.1 1.5 1.5 0.8 1.1 1.5 1.5 0.8 1.1 1.5 1.5 0.8 1.5 2.0 1.0 1.5 2.0 1.0 1.5 2.0 12 mf6700zz 36000 34000 34000 30000 31000 30500 30500 27000 27000 26000 26000 23000 25000 24000 24000 20500 21000 19500 17500 19000 17000 15000 17000 14500 13500 43000 40500 40500 36500 37000 36000 36000 32500 32000 315000 31500
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inch series flanged bore outer flange flange radius width diameter diameter diameter width rmin b d d df bf 0.0469 0.1562 0.0330 0.1875 0.0781 0.2500 0.0937 0.1875 0.2030 0.2340 0.2960 0.2340 0.2340 0.3590 0.2960 0.3590 0.4220 0.4400 0.3590 0.3590 0.4220 0.5650 0.4220 0.5470 0.6900 0.5470 0.0039 0.0625 0.0130 0.0039 0.0781 0.0230 0.0039 0.0937 0.0230 0.0039 0.0625 0.0180 0.0039 0.0059 0.0194 0.0230 open double shielded fro frozz fri fri33 frizz fri33zz fri-4 fri-4zz basic basic dynamic static no ball li l0 ui uo load load balls size rating rating kgf kgf 7 0.0236 0.0937 0.0310 0.0846 0.1201 0.1378 11 35 6 0.0394 0.1094 0.0310 0.0917 0.1496 0.1614 24 7 width flange with width shields bfl bi 0.1406 0.0310 0.1543 0.2118 0.1173 0.1626 0.0937 0.0310 0.1181 0.1496 0.0194 0.0310 0.1543 0.2118 0.1406 0.0310 0.1713 0.3638 0.2264 0.1654 0.2264 0.2795 29 19 15 56 29 57 65 64 37 37 72 133 38 110 151 55 340 521 10 10 55 18 10 18 23 23 15 15 28 50 18 45 63 28 145 246 7 7 10 6 7 6 7 7 10 10 8 7 11
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special size ball bearings dimensions id x od x width 2 x 6 x 2.3 3.5 x 9 x 4 4 x 9 x 3.5 5 x 11 x 4 flange 5 x 13 x 5 5 x 13 x 5 flange 6 x 16 x 5 6.35 x 19 x 6 6 35 x 22 x7 7.93 x 22 x 7 8 x 16 x 6 8 x 16 x 6 flange 8 x 22 x 6 9 x 14 x 3 10 x 21 x 5 12 x 28 x 7 12 x 30 x 8 12.7 x 32 x 10 13 x 24 x 6 13 x25 x 6 15 x 20 x 3.5 15 x 32 x 8 15.87 x 40 x 12 16 x 30 x 6 17 x 32 x 7 17 x 32 x 8 17 x 35 x 8 19.05 x 40 x 12 19.05 x 47 x 14 20 x 25 x 4 20 x 42 x 8 22 x 44 x 12 .250 x .625 x .250 flange .312 x .688 x .250 flange .375 x .625 x .156 our part number mr62-zz/23 s mr935-zz mr684-zz/w35 mf115-zz mr695-zz/w5 s mf695-zz/w5 s mr616-zz mr626-zz 1/4 2rs mr627-zz 1/4 2rs mr608-zz 5/16 2rs mr688-zz/w6 s mf688-zz/w6 s x117 mr679 s mr2110 mr16001 mr16101 thb mr6201-zz 1/2 2rs mr6901/13 th9 mr2513 th9 mr2015 s mr16002 mr6203-2rs 5/8 zz mr160 b17-86 y-17 zz mr16003 mr6203-2rs 3/4 zz mr6204-2rs 3/4 zz mr2520 s mr16004 mr60/22 zz f4-zz s f5-zz s r1038-zz s special features width 2.3mm id 3.5mm
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lubrication guide common oil brands and efficiency our code af2 af3 wl2 a4d d5r 002 lubrication base diester petroleum diester diester methylphenyl flash operating point viscosity temp șc șc 235 145 215 220 316 166 1438șc 10.240șc 1438șc 12.738șc 12525șc 1340șc -50 to +120 -55 to +115 -55 to +175 -60 to +125 -40 to +230 mil standard mil-l-6085a mil-l-7870a mil-l-6085a mil-l-6085a vv-l-800 manufacturer brand aero shell fluid 12 aero shell fluid 3 windsor lube l-245x andersoll401d sh550r antirust p2100 shell oil shell oil anderson oil tenneco chemicals dow corning nihon oil co common grease brands and efficiency our code av2 av3 avs ag7 thickeni ng agent lithium lithium lithium microgel lubrication base mineral mineral mineral diester silicone mineral mineral mineral diester diester mineral ester mineral fluorinated fluorinated fluorinated diester mineral synthetic hydrocarbon diester drop operating mil pt consistency temp șc standard șc 182 183 183 >260 >260 260 >260 200 193 190 191 220
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internal clearance and standard values internal clearance is the play between the outer ring inner ring and rolling element generally the amount of up and down movement of the outer ring with respect to the fixed inner ring is called the radial internal clearance and its right and left movement the axial internal clearance bearing internal clearance in operation is an important factor that has a significant influence on the factors such as noise vibration heat and fatigue life radial ball bearings are usually classified by their internal radial clearance when measuring the internal clearance the bearing is subjected to a standard load in order to ensure that there is full contact between all the bearing components under such a load the measured value is larger than the actual value stated for the radial clearance this is due to elastic deformation the difference is compensated by the factors given in the tables below radial internal clearance of small and miniature bearings clearance m
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selection of bearing clearance theoretically maximum bearing life is achieved when there is a very slight preload however even a slight increase in this theoretical preload can have a considerably detremental effect on the bearing life positive clearance should therefore be selected mc3 is usually adapted for miniature or small bearings standard clearance for general bearings and the clearance for thin section bearings should never be greater than standard selection of radial internal clearance operating condition clearance fit for the inner and outer ring low axial load no axial load carrying requirement select bearing with reduced radial clearance lower vibration and noise low speeds lower frictional torque standard axial load average axial load carrying requirements slight interference fit for inner ring clearance fit for outer ring average/low speeds extremely low frictional torque high axial road high axial load carrying requirements heavy interference fit to support high loads
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maximum speed characteristics maximum permissible bearing speed each bearing type has its own limiting speed th e theoretical speed that bearings can run safely even if heat generation by internal friction occurs is called the maximum permissible speed the permissible speed is related to the bearing type the type of cage lubricant load and cooling conditions to which the bearing is subjected for contact rubber seals 2rs type the permissible speeds are limited by the peripheral velocity of the seal lip normally this is approximately 50-60 of the non-contact rubber seals if light contact seals are required this must be stipulated with the order if high loads occur the permissible speed values must be reduced and the following supplementary factors applied except under standard operating conditions c/p>9 fa/fr<0.2 compensation for maximum permissible speed dependent on load ratio compensation for maximum permissible speed under combined axial and radial load if the bearing operates at ov
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