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Help CenterOriginal Koyo Needle Roller Bearings Imported From Japan / Precision Needle Bearing HK3012
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Original koyo needle roller bearings imported from Japan / precision needle bearing HK3012
Specifications of drawn cup needle bearing HK3012
| Boundary dimensions(mm) | Basic load ratings(N) | Limiting speeds(rpm) | Mass(g) | Bearing Number | |||
| Fw | D | C | Cr | Cor | Oil | (Approx.) | KML |
| 30 | 37 | 12 | 10100 | 16200 | 8100 | 24 | HK3012 |
The main series as follow:
Series |
Description |
HK |
Drawn Cup Needle Roller Bearings With Open Ends |
HK...RS |
Drawn Cup Needle Roller Bearings With Open Ends, Sealed on One side |
HK...2RS |
Drawn Cup Needle Roller Bearings With Open Ends, Sealed on Both sides |
BK |
Drawn Cup Needle Roller Bearings With Closed Ends |
BK...RS |
Drawn Cup Needle Roller Bearings With Closed Ends, Sealed on One side |
FFY |
Drawn Cup Full Complement Needle Roller Bearings With Open End |
MFMFY |
Drawn Cup Full Complement Needle Roller Bearings With Closed End |
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
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