Tapered roller bearings 30202 for precision instruments

       Tapered roller bearings have tapered inner and outer ring raceways and tapered rollers. They are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads. The projection lines of the raceways meet at a common point on the bearing axis to provide true rolling and low friction. The axial load carrying capacity of tapered roller bearings increases with increasing contact angle α. The size of the angle is related to the calculation factore: the larger the value of e, the larger the contact angle. A single row tapered roller bearing is typically adjusted against a second tapered roller bearing.

       Bearing during assembly should be assembled in accordance with the requirements below'll tell you about what bearing assembly principle: (1) the assembly process, to make the center line of the shaft and the bearing hole coincide. Should the tilt, installation difficulties, but will also cause indentation, journal bending, or even cause the bearing inner ring fracture. (2) does not allow hand hammer directly beat the bearing outer ring, the inner ring. (3) heating the assembly of a large amount of interference and medium-sized bearing should avoid bearing direct bearing contact with the oil temperature is much higher than the bottom, in order to avoid local overheating leaving the rolling element and the inner and outer ring raceways annealing lose their hardness .

Taper roller bearing Type table:

1.The single row taper roller bearings:

     (1) 8 series: 308/800 R 18 series;318/530 318/850 X2 X3 28 series: 32880 X2

1931976X2  31984X2   31992X2  31996X2  319/530X2  319/710  319/800X2  319/900X2

        29series:32907 32910  32912  32913.....32972 32996X3

        10series:31038X2  31068X2  31072X2  31081X2 31084X2 31088X2 31092X2 310/50X2  310/560X2

         20series:32003  32004  32005  32006 32007  32008  32009  32010   32011 32012 32013  32014 32015 32016  32017  32018  32019  32020  32021  32022  32023  32024  32025  32026  32028 32030  32032  32034  32036  32038   32040  32042  32044  32046  32048  32050  32052  32054  32056  32058 32060 32064

         30series:33005 33006 33007  33008  33009 33010   33011 33012 33013  33014  33015  33016  33017  33018  33019  33020  33021  33022 33023  33024 

         11series:31160X2

         31series:33108  33109  33110  33111  33112  33113 33114  33115 33116  33117  33118  33119 33120 33121 33122  33123  33124

         82series:(0)2series30202 30203 30204  30205 30206  30207  30208  30209  30210   30211 30212  30213  30214  30215  30216  30217  30218  30219  30220 30221 30222  30223 30244

         22series:32203 32204  32205  32206  32207  32208  32209 32210 32211  32212 32213  32214  32215 32216 32217 32218  32219  32220  32221  32222   32223  32224  32228 32230  32232  32234  32236  32238  32240 32242  32244 32246  32248  32248

         32series:33205  .......33221

   (2)3series:30302....30322   30324...30352 

          13series;31303....31324   31326  31328  31330  31332

           23series;32303....32322 32324  32326  32328  32330  32332  32334

Non-standard series :30607...30651   30660    31613   R32304

2.Double row taper roller bearings:

       19 series: 351976 351980 351988 351996 3519/500 3519/530 3519/560 3519/600 3519/630 3519/670 3519/710

3519/750 3519/800 3519/850 3519/900 351990 / HC 3519/950 3519/1120

       29 series: 352926 352930 352932 352934 352936... 352972

       0 series: 35014 X2 10 series: 351056 351068 351072 351076 351080... 351096

       20 series: 352026 352028 352032... 352072

      11 series: 351160 351164 351168 351172 351176 351180 351184 351188 351192 351196

       21 series: 352122 352124 352126... 352152

3.Four row taper roller bearings:

      381992 3819/560 3819/600 3819/630 3819/670 3819/710 382930 382936 382938... 382972

381030 381040 381050 381052 381056 X2 381036 381060 381068 381072 381080 381084 381088 381092 381096

      3810/530 3810/600 / HC 3810/630 3810/710 3810/750 382028 382034 382036 382038 382040 382044   382048 382052 382060

382064 381156 381160 381164 381168 381172 381176 381180 381184 381188 381192 380628 380629 380630 380641 3811/530 3811/600

380644 380645 380648 380650 380652 380660 380670 680679 380688 380692 380696 3806/780

Bearings Package:
Original Package:
1):Inner Plastic Bag+ Paper Box + Carton(+Pallet);
2):Small sizes:Plastic Tube + Carton
3):Big sizes:Wooden Case


Bearings Lead time:
We will prepare your order as soon as possible.
1)2-3 days for ex-stock
2)6-10 days for others

Shipping & Delivery time:

1)Less than 45 Kg:DHL TNT Fedex UPS express will be better,( 4-7 days delivered to your address);
2) Between 45 to 200 Kg:Air transiportation will be better,( 5-14 days delivered to your airport);
3) Over 200 Kg:Sea transportation will be better.( Cheapest,18-45 days to your port ).

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