Original koyo needle roller bearings imported from Japan / precision needle bearing HK3012

Specifications of drawn cup needle bearing HK3012

 The main series  as follow:

 Inspection

    The dimensional accuracy of drawn cup needle roller bearings can’t be measured before fitting, as the thin walled outer ring will be out of round during manufacturing process.

The bearings obtain the accuracy only when pressed into a housing bore with the recommended tolerance limits.

    The inscribed circle’s diameter (FW) can be checked as follows;

Press the bearing into a normal ring and inspect the minimum deviation of inner diameter with cylindrical limiting gauge.

    manufatures other kinds of needle roller bearings and inch series,

such as    combined radial thrust bearings,

                 radial needle roller and cage assemblies,

                 cylindrical roller bearings, needle roller bearings,

                 plane thrust bearings,

                 yoke type track roller and  stud type track roller,

 Product Precision Accuracy:
Dimensional tolerance and geometrical accuracy is based on GB/T5801.
Mutual difference of needle roller diameter is 2μ M, and the precision grade is G2 (ISO GB309).
The diameter of inscribed circle conforms to tolerance grade F6 before the fitting of outer ring with cage and roller assembly.
Bearing radial running clearance conforms to the value defined by 0 group of GB/T4604.
Special precision grade is based on GB/T307.1
For fuller information on the special requirements of bearing running clearance, inscribed circle and precision grade, please contact our company.

Special Directions:
Bearing running clearance and inner-cutting roundness should be regulated according to different conditions.
Machine tools should be used for press-in fitting or thermal fitting of the bearing.
Limited by plastic cages (suffixed with TN) and sealing-element material, operating temperature is -300C---+1000C.
For general-disposition design of bearings, refer to the relevant recommendation in the applied technology of rolling bearings.

Items as follows

HK0608                         HK0509                 HK0607                    HK0609              HK0610

HK0708                         HK0709                 HK0808                    HK0810              HK0812

HK081408                     HK081410            HK0908                    HK0910              HK0912

HK091513                    HK091612             HK1008                    HK1010              HK1012

HK1015                        HK101515             HK101608                HK101610         HK101612

HK101615                    HK101617             HK101720                HK1208             HK1210

HK1212                        HK1214                  HK1216                    HK121712         HK121715

HK121718                   HK121912              HK1309                    HK1312              HK13.512

HK1410                        HK1412                  HK1816                    HK2010              HK2012

HK2014                        HK2015                  HK2016                    HK2018              HK2020

HK2025                        HK202720             HK2030                     HK2210              HK2212

HK2216                        HK2218                  HK2220                     HK2230             HK2225

HK2512                        HK2516                  HK2518                     HK2520              HK2522

HK2525                        HK2526                  HK2538                     HK253308         HK253316

HK263416                    HK2812                  HK2816                     HK2820             HK2830

HK3012                        HK3016                  HK3018                      HK3020             HK3026

HK3038                        HK303816             HK303824                  HK303832         HK304032

HK1416                        HK1512                  HK1514                      HK1515              HK1516

HK1520                        HK152007             HK152012                  HK152016          HK152020

HK1522                        HK152212             HK1612                       HK1614              HK1616

HK1620                        HK1622                 HK1712                        HK1714              HK1716

HK1718                        HK1720                 HK1722                        HK172425         HK1812

HK1825                        HK3224                 HK3232                        HK323934         HK3512

HK3516                        HK3520                 HK3526                        HK354224         HK354316

HK354320                   HK354325             HK354332                   HK4012              HK4016