Closed end drawn cup needle roller bearing BK3512
Needle roller bearings have a high load carrying capacity in addition to their low corss-section and stiffness. They are especially suitable for bearing arrangements where radial space is limited. Because needle roller bearings only carry pure radial load and can not limit the axial displacement of shaft relative to the housing. It is important to ensure that inner ring axis and outer ring axis must be aligned during mounting the bearings.
| Bearing code | Structure feature |
| HK | Perforated type drawn cup needle roller bearing |
| HK...RS | Perforated type drawn cup needle roller bearing one side with seal |
| HK...2RS | Perforated type drawn cup needle roller bearing two sides with seal |
| BK | Perforated type drawn cup needle roller bearing |
| BK...RS | Perforated type drawn cup needle roller bearing one side with seal |
| F | Perforated type drawn cup full needle roller bearing |
| FY | Perforated type drawn cup full needle roller bearing(Grease Limit) |
| MF | Closed drawn cup full needle roller bearing |
| MFY | Closed drawn cup full needle roller bearing (Grease Limit) |
Needle roller bearing index:
Drawn cup needle roller bearings, HK, BK, HK 2RS, BK RS
Drawn cup needle roller bearings, TA, TLA
Drawn cup needle roller bearings, Inch size SCE, BCE...
Drawn cup needle roller bearings full complement, F, MF
Drawn cup needle roller clutch, HF, HFL
Needle roller and cage assemblies, K, K...ZW
Needle roller and cage assemblies, rod use KZK, KBK
Needle roller bearings without inner ring, NK, RNA, NKS
Needle roller bearings, NKI, NA
Needle roller bearings, flanges, without inner ring, RNAO, RNAO, ZW
Needle roller bearings, flanges, with inner ring, NAO...ZW
Needle roller bearings without inner ring full complement, RNAV
Needle roller bearings with inner ring full complement, NAV
Axial thrust needle roller and cage assemblies, AXK, AXW
Axial thrust needle roller and cage assemblies, inch size TC
| new model | The old model | Bore size | Outside size | Width |
| (mm) | (mm) | (mm) | ||
| BK3016 | 45941/30 | 30 | 37 | 16 |
| BK3020 | 65941/30 | 30 | 37 | 20 |
| BK3512 | 25941/35 | 35 | 42 | 12 |
| BK3520 | 65941/35 | 35 | 42 | 20 |
| BK4012 | 25941/40 | 40 | 47 | 12 |
| BK4020 | 65941/40 | 40 | 47 | 20 |
| BK4520 | 65941/45 | 45 | 52 | 20 |
| BK5020 | 55941/50 | 50 | 58 | 20 |
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