Series:
Drawn cup needle roller bearings ( HK, BK, Inch series )
Sealed drawn cup needle roller bearings ( HK…RS, HK…2RS, BK…RS series)
Drawn cup full component needle roller bearings ( F, FH, MF, MFH, FY series)
Drawn cup roller clutches / clutch and bearing assemblies ( HF, HFL series)
Radial needle roller and cage assemblies ( K, K…ZW series )
Radial needle and cage assemblies for pin connecting rod ( KZK, KBK series)
Heavy duty needle roller bearings (NK, NKS, RNA49, RNA69, NKI, NKIS, NA49, NA69, NA48, NAO, RNAO series )
Sealed heavy duty needle roller bearings ( RNA49…RS, RNA49…2RS, NA49…RS, NA49…2RS)
Full component needle roller bearings ( RNAV, NAV series )
Self-aligning needle roller bearings ( RPNA, PNA series )
Inner rings ( IR, LR series)
Thrust needle roller and cage assemblies( AXK, Inch series)
Axial needle roller (AXW series)
Bearing No. | Boundary dimensions(mm) | Basic load ratings(N) | Mass(g) | ||
d | Fw | D | B | ≈ | |
NA4900 | 10 | 14 | 22 | 13 | 21 |
NA4901 | 12 | 16 | 24 | 13 | 25.1 |
NA4902 | 15 | 20 | 28 | 13 | 32 |
NA4903 | 17 | 22 | 30 | 13 | 32.8 |
NA4904 | 20 | 25 | 37 | 17 | 70.2 |
NA49/22 | 22 | 28 | 39 | 17 | 76 |
NA4905 | 25 | 30 | 42 | 17 | 76 |
NA49/28 | 28 | 32 | 45 | 17 | 90.7 |
NA49/32 | 32 | 40 | 52 | 20 | 150 |
NA4907 | 35 | 42 | 55 | 20 | 151 |
NA4908 | 40 | 48 | 62 | 22 | 123 |
NA4909 | 45 | 50 | 68 | 22 | 260 |
NA4910 | 50 | 58 | 72 | 22 | 264 |
NA4911 | 55 | 63 | 80 | 25 | 386 |
NA4912 | 60 | 68 | 85 | 25 | 412 |
NA4913 | 65 | 72 | 90 | 25 | 435 |
NA4914 | 70 | 80 | 100 | 30 | 712 |
NA4915 | 75 | 85 | 105 | 30 | 765 |
NA4916 | 80 | 90 | 110 | 30 | 870 |
NA4917 | 85 | 100 | 120 | 35 | 1250 |
NA4918 | 90 | 105 | 125 | 35 | 1312 |
NA4919 | 95 | 110 | 130 | 35 | 1371 |
NA4920 | 100 | 115 | 140 | 40 | 1900 |
NA4922 | 110 | 125 | 150 | 40 | 2070 |
NA4924 | 120 | 135 | 165 | 45 | 2860 |
NA4926 | 130 | 150 | 180 | 50 | 3900 |
NA4928 | 140 | 160 | 190 | 50 | 4150 |
Company introduce:
Needle roller bearing /cam follower is composed of a stud used as the tray of a group of rollers and a thick wall outer ring .The shoulder of the stud and the surface retaining ring on the stud form the guiding faces on the two sides of the outer ring.When the curve rollers are running on the plain tray or cam wheel,the inner stress on the rollers will increase due to the deformation of the outer ring.
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China High Quality Needle Roller Bearing NA4900 NA4913 NA series,RNA series