30621 7821 Chrome Steel 105*215*78mm Single Row Cone and Cup Tapered Roller Bearings
Fabricated from premium Chrome Steel (SUJ2/GCr15) with high-carbon chromium composition, delivering exceptional wear resistance, impact load tolerance, and structural stability—certified under ISO 9001 quality standards for consistent batch performance in heavy-truck and industrial scenarios .
Bearing rings and rollers undergo precision heat treatment, achieving a hardness of HRC 60-62, ensuring stable operation under temperature fluctuations (from -40°C to 120°C in standard conditions) and continuous cyclic loads in long-haul trucking and 24/7 industrial operations.
Precision-ground raceways (surface roughness Ra ≤ 0.4μm) reduce friction coefficient by 26%, lowering energy consumption and extending service life by 70% compared to ordinary carbon steel bearings—critical for minimizing downtime in logistics and manufacturing.
| No | Item | Data |
| 1. | Bearing No. | 30621 |
| 2. | Internal Diameter(mm) | 105 |
| 3. | Outside Diameter(mm) | 215 |
| 4. | Width | 78 |
| 5. | Weight (kgs) | 4.77 |
| Bearing NO. | Bearing NO. | Bearing NO. | Bearing NO. |
| 639213 | CBK257(C102) | 11590/11520 | LM11749/LM11710 |
| LM11949/LM11910 | 09074/09195 | 639177 | LM12748/LM12710 |
| LM12649/LM12610 | LM12749/LM12710 | LM12749/LM12711 | JL22349/JL22310 |
| JHM33449/JHM33410 | 07098-07196 | L44643/L44610 | 1780-1729 |
| M84548/10 | LM44649/LM44610 | 28KW01 | L45449/L45410 |
| M86649/M86610 | M88043/M88010 | LM67048/L67010 | LM67045/LM67010 |
| JL26749/JL26710 | 320/32C | TR0608A-N | 6-7707Y |
| M88048/M88010 | 639337A | LM48548/LM48510 | LM48549X/10 |
| 14136A/14276 | HM88649/HM88610 | 02878/02820 | 25877/25821 |
| 31594/31520 | HM89446/HM89410 | 639338A | 14585-14525 |
| 6-7807Y | L68149/L68110 | L68149A/10/P6 | 328227 |
| L68149/L68111 | LM78349/LM78310A | LM78349/LM78310C | JL68145/11-Z |
| U298/U261L | 30607 | TR070803C | 25880/25821 |
| HM89449/HM89410 | HM89448/HM89410 | 25570/25520 | JL69345/JL69310 |
| JL69345/JL69310E | JL69349/JL69310 | LM29748/LM29710 | 57207/LM29710 |
| LM29749/LM29711 | LM29749/LM29710 | 13687/20 | 2788/2720 |
| 26878/26822 | 3490/3420 | 3875/3820 | 3580/3525 |
| 639315A/Q | M399 | M365L | 2789/2720 |
| U399/U360L | TR080803R-9 | 3879/3820 | LM300849/11 |
| 18437 | 18590/18520 | LM501349/LM501310 | LM501349/LM501311 |
| LM501349/LM501314 | 11162/11300 | 24780/24720 | 26882/26822 |
| 3880/3820 | HM803146/HM803110 | 25580/25520 | 3782/3720 |
| 127509 | 17887/17831 | LM102949/LM102910 | LM603049/LM603011 |
| LM603049/LM603012 | LM603049/LM603014 | LM603049A/LM603014 | 25590/25520 |
| 25590/25523 | LM503349A/LM503310 | LM503349/LM503310 | 18690/18620 |
| 386A/382A | JLM104946/10Z | JLM104948/JLM104910 | JLM104945/10Z |
| JM205149/JM205110 | LM104949/LM104910 | LM104949/LM104911 | 18790/18720 |
| 368A/362A | 368/362A | 368/362 | 28985/28920 |
| 28985A/28920 | 29587/29520 | 29586A/29522 | 395A/394A |
| 39590/20 | 3984/3920 | HM212049/11 | 33281/33462 |
| 33287/33462 | 580/572 | 27695/20 | 498/492A |
| HM518445/10 | 594/592A |
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| Bearing NO. | Bearing NO. | Bearing NO. | Bearing NO. |
| 30203 | 30204 | 30205 | 30206 |
| 30207 | 30208 | 30209 | 30210 |
| 30211 | 30212 | 30213 | 30214 |
| 30215 | 30216 | 30217 | 30218 |
| 30219 | 30220 | 30221 | 30222 |
| 30224 | 30226 | 30228 | 30230 |
| 30232 | 30234 | 30236 | 30238 |
| 30240 | 30302 | 30303 | 30304 |
| 30305 | 30306 | 30307 | 30308 |
| 30309 | 30310 | 30311 | 30312 |
| 30313 | 30313/YB2 | 30314 | 30315 |
| 30316 | 30317 | 30318 | 30319 |
| 30320 | 30321 | 30322 | 30324 |
| 30326 | 30328 | 30330 | 30332 |
| 30334 | 32204 | 32205 | 32206 |
| 32207 | 32208 | 32209 | 32210 |
| 32211 | 32212 | 32213 | 32214 |
| 32215 | 32216 | 32217 | 32218 |
| 32219 | 32220 | 32221 | 32222 |
| 32224 | 32226 | 32228 | 32230 |
| 32232 | 32234 | 32236 | 32238 |
| 32240 | 32244 | 32304 | 32305 |
| 32306 | 32307 | 32308 | 32309 |
| 32310 | 32311 | 32312 | 32313 |
| 32314 | 32315 | 32316 | 32317 |
| 32318 | 32319 | 32320 | 32321 |
| 32322 | 32324 | 32326 | 32328 |
| 32330 | 32004 | 32005 | 32006 |
| 32007 | 32008 | 32009 | 32010 |
| 32011 | 32012 | 32013 | 32014 |
| 32015 | 32016 | 32017 | 32018 |
| 32019 | 32020 | 32021 | 32022 |
| 32024 | 32026 | 32028 | 32030 |
| 32032 | 32034 | 32036 | 32038 |
| 32040 | 32044 | 33005 | 33006 |
| 33007 | 33008 | 33009 | 33010 |
| 33011 | 33012 | 33013 | 33014 |
| 33015 | 33016 | 33017 | 33018 |
| 33019 | 33020 | 33021 | 33022 |
| 33024 | 33026 | 33028 | 33030 |
| 33108 | 33109 | 33110 | 33111 |
| 33112 | 33113 | 33114 | 33115 |
| 33116 | 33117 | 33118 | 33119 |
| 33120 | 33121 | 33122 | 33124 |
| 33205 | 33206 | 33207 | 33208 |
| 33209 | 33210 | 33211 | 33212 |
| 33213 | 33214 | 33215 | 33216 |
| 33217 | 33218 | 33219 | 33220 |
| 31305 | 31306 | 31307 | 31308 |
| 31309 | 31310 | 31311 | 31312 |
| 31313 | 31314 | 31315 | 31316 |
| 31317 | 31318 | 31319 | 3002 |
| 30613B | 30613 | 30614 | 33113X2 |
| 33114X2 | 30615 | 33216X2 | 30617 |
| 30618 | 30619 | 30621 | 306/47 |
| 32905 | 32906 | 32907 | 32908 |
| 32909 | 32910 | 32911 | 32912 |
| 32913 | 32914 | 32915 | 32916 |
| 32917 | 32918 | 32919 | 32920 |
| 32921 | 32922 | 32924 | 32926 |
| 32928 | 32930 | 32932 | 32934 |
| 32936 | 32938 | 32940 | 32944 |
The Shipping Way We Use
We use the main delivery companies are as below
We normally will dispatch your order within 2-7 working days depends on stock level, as soon as the order is shipped, we will list the tracking number on your order detail page, if there is any problem regarding to the shipping, please feel free to contact us.
Below shows the estimate delivery time for different courier:
- DHL: 10-14 working days
- FedEx: 7 to 10 working days
- UPS: 7 to 10 working days
- EMS: 10-14 working days
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30621 7821 Chrome Steel 105*215*78mm Single Row Cone and Cup Tapered Roller Bearings Images
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