Porotakaro Roller Bearingse mau ana i roto i nga porotaka e whakamahia ana hei huānga hurihuri he rereke ki nga poi i roto i nga paera poi.Na tera, he nui ake te waahi whakapiri (raina) o nga roera me te mowhiti o waho, ka tohatoha i nga kawenga puta noa i te mata whanui.
I muri mai, he nui te kaha o te kawenga radial me te pai mo te tere tere.He nui te rigidity radial i runga i te rarangi-rua, ka whakamahia mo nga taputapu miihini tika.
 		     			Momo o te porotakaro porotakaro:
Roera porotakaroa rarangi kotahi: NU, NJ, NUP, NUP raupapa.
Rarangi takirua porotakaro roera: raupapa NNU.
E wha rarangi roera porotakaro: raupapa FC.
Rarangi kotahi ki tonu te whakakii i te roera porotakaro: raupapa SL18, raupapa SL 19.
Rarangi rua ki tonu te whakakii i te roera porotakaro: raupapa SL01, raupapa SL02, raupapa SL18.
 		     			
 		     			|   Te mau tau  |    Te rahi o te rohe  |    Mass  |    Te mau tau  |    Te rahi o te rohe  |    Mass  |  ||||
|   MM  |    kg  |    MM  |    kg  |  ||||||
|   d  |    D  |    B  |    d  |    D  |    B  |  ||||
|   NU NJ 202  |    15  |    35  |    11  |    0.047~0.048  |    NU 264  |    320  |    580  |    92  |    115  |  
|   NU N NJ NUP 203  |    17  |    40  |    12  |    0.066~0.072  |    NJ N NU 303  |    17  |    47  |    14  |    0.12~0.12  |  
|   NU N NJ NUP 204  |    20  |    47  |    14  |    0.11~0.12  |    NU N NJ NUP 304  |    20  |    52  |    15  |    0.14~0.16  |  
|   NU N NJ NUP 205  |    25  |    52  |    15  |    0.13~0.14  |    NU N NJ NUP 305  |    25  |    62  |    17  |    0.23~0.25  |  
|   NU N NJ NUP 206  |    30  |    62  |    16  |    0.2~0.21  |    NU N NJ NUP 306  |    30  |    72  |    19  |    0.36~0.38  |  
|   NU N NJ NUP 207  |    35  |    72  |    17  |    0.29~0.31  |    NU N NJ NUP 307  |    35  |    80  |    21  |    0.47~0.49  |  
|   NU N NJ NUP 208  |    40  |    80  |    18  |    0.37~0.39  |    NU N NJ NUP 308  |    40  |    90  |    23  |    0.65~0.68  |  
|   NU N NJ NUP 209  |    45  |    85  |    19  |    0.42~0.44  |    NU N NJ NUP 309  |    45  |    100  |    25  |    0.88~0.93  |  
|   NU N NJ NUP 210  |    50  |    90  |    20  |    0.47~0.5  |    NU N NJ NUP 310  |    50  |    110  |    27  |    1.1~1.15  |  
|   NU N NJ NUP 211  |    55  |    100  |    21  |    0.65~0.68  |    NU N NJ NUP 311  |    55  |    120  |    29  |    1.45~1.5  |  
|   NU N NJ NUP 212  |    60  |    110  |    22  |    0.79~0.86  |    NU N NJ NUP 312  |    60  |    130  |    31  |    1.75~1.9  |  
|   NU N NJ NUP 213  |    65  |    120  |    23  |    1~1.05  |    NU N NJ NUP 313  |    65  |    140  |    33  |    2.2~2.35  |  
|   NU N NJ NUP 214  |    70  |    125  |    24  |    1.1~1.2  |    NU N NJ NUP 314  |    70  |    150  |    35  |    2.65~2.85  |  
|   NU N NJ NUP 215  |    75  |    130  |    25  |    1.2~1.3  |    NU N NJ NUP 315  |    75  |    160  |    37  |    3.3~3.45  |  
|   NU N NJ NUP 216  |    80  |    140  |    26  |    1.55~1.55  |    NU N NJ NUP 316  |    80  |    170  |    39  |    3.85~4.1  |  
|   NU N NJ NUP 217  |    85  |    150  |    28  |    1.9~1.9  |    NU N NJ NUP 317  |    85  |    180  |    41  |    4.55~4.9  |  
|   NU N NJ NUP 218  |    90  |    160  |    30  |    2.3~2.45  |    NU N NJ NUP 318  |    90  |    190  |    43  |    5.25~5.55  |  
|   NU N NJ NUP 219  |    95  |    170  |    32  |    2.85~2.9  |    NU N NJ NUP 319  |    95  |    200  |    45  |    6.2~6.3  |  
|   NU N NJ NUP 220  |    100  |    180  |    34  |    3.35~3.6  |    NU N NJ NUP 320  |    100  |    215  |    47  |    7.35~7.7  |  
|   NU N NJ NUP 221  |    105  |    190  |    36  |    3.9~4.2  |    NJ N NU 321  |    105  |    225  |    49  |    8.5~9.05  |  
|   NU N NJ NUP 222  |    110  |    200  |    38  |    4.7~5  |    NU N NJ NUP 322  |    110  |    240  |    50  |    10~10.5  |  
|   NU N NJ NUP 224  |    120  |    215  |    40  |    5.75~5.95  |    NU N NJ NUP 324  |    120  |    260  |    55  |    13~14  |  
|   NU N NJ NUP 226  |    130  |    230  |    40  |    6.45~6.6  |    NU N NJ NUP 326  |    130  |    280  |    58  |    16~19.5  |  
|   NU NJ NUP 228  |    140  |    250  |    42  |    8.45~9.4  |    NU NJ NUP 328  |    140  |    300  |    62  |    20~23.5  |  
|   NU NJ NUP 230  |    150  |    270  |    45  |    10.5~12  |    NU NJ 330  |    150  |    320  |    65  |    26.5~26.5  |  
|   NU NJ NUP 232  |    160  |    290  |    48  |    14~15.5  |    NU NJ 332  |    160  |    340  |    68  |    31~31  |  
|   NU NJ 234  |    170  |    310  |    52  |    17.5~17.5  |    NU 334  |    170  |    360  |    72  |    33  |  
|   NU NJ 236  |    180  |    320  |    52  |    18.5~18.5  |    NU NJ 336  |    180  |    380  |    75  |    42.5~44  |  
|   NU NJ NUP 238  |    190  |    340  |    55  |    22~22.5  |    NU 338  |    190  |    400  |    78  |    50  |  
|   NU NJ 240  |    200  |    360  |    58  |    26.5~27  |    NU NJ 340  |    200  |    420  |    80  |    56.5~57  |  
|   NU NJ NUP 244  |    220  |    400  |    65  |    37~37.5  |    NU NJ 344  |    220  |    460  |    88  |    73.5~75  |  
|   NU NJ NUP 248  |    240  |    440  |    72  |    51.5~53  |    NU NJ 348  |    240  |    500  |    95  |    94.5~98.5  |  
|   NU NJ NUP 252  |    260  |    480  |    80  |    68.5~72  |    NU 352  |    260  |    540  |    102  |    121  |  
|   NU NJ 256  |    280  |    500  |    80  |    71.5~73  |    NU 360  |    300  |    620  |    109  |    174  |  
|   NU 260  |    300  |    540  |    85  |    89.5  |  |||||
Ko Shandong Nice Bearing Manufacture Co. Ltd, i whakaturia i te tau 1995, he kaiwhakarato o te kawe, te roera, te poroporo, te urunga poraka, te mutunga o te toka, te roera ngira, te piupiu me te rereti me te slewing pouara tautoko me etahi atu. kua kaweake atu i te 100 whenua penei i te USA, Mexico, Canada, Spain, Russia, Singapore, Thailand, India etc.Kei te kaha matou ki te hanga i tetahi papa hokohoko kotahi-mutu mo nga kaihoko ki te whakaora wa, te whakapai ake i te pai me te utu pai me te kounga ki te wikitoria. te whakawhirinaki o nga kaihoko.Ko te mahi tahi Win-win ko te kaupapa pakihi a to tatou kamupene.