Drawn cup needle roller bearings are assemblies, which are available in open or closed type. The assemblies consist of a thin-walled drawn outer ring, needle roller and cage assembly.
Drawn cup needle roller bearings have a precision stamped outer ring made of thin steel plate, which has a small structural space and a large load capacity. Suitable for installation space is limited and the shell hole is not suitable for the occasion as a raceway. And pressed into the bearing housing hole without further axial positioning.
Main structural forms.
Bearing code
Structural features
HK
Perforated type Drawn cup needle roller bearings
HK… .RS
Perforated type Drawn cup needle roller bearing with seal on one side
HK… .2RS
Drawn cup needle roller bearings with seals on both sides
BK
Sealed type drawn cup needle roller bearings
BK… .RS
Sealed type Drawn cup needle roller bearings with seals on one side
F
Perforated type Drawn cup full complement needle roller bearings
FY
Perforated type Drawn cup full complement needle roller bearing (grease limited)
MF
Sealed type Drawn cup full complement needle roller bearing
MFY
Sealed type Drawn cup full complement needle roller bearing (grease limit)
Needle roller bearings of this type generally do not use an inner ring. If you need to use the inner ring, you can use the IR type inner ring.
DF stamping outer ring needle roller bearings are divided into bearing ends perforated (HK type) and bearing ends closed (BK type). Compared with the perforated type of drawn cup needle roller bearings, the closed end of the bearing is closed, which is suitable for the shaft end and can withstand small axial travel force.
What is a sealed type of stamping outer ring needle roller bearing?
Sealed stamping outer ring needle roller bearings with sealing ring seal, in general working conditions, can protect the bearing from debris intrusion and grease leakage. Therefore, in the range of -20℃-120℃, it can be operated for a long time. If the appropriate grease can be replenished at the right time or in short-term use, it can be used at +130°C.
The seal ring is made of synthetic rubber, with good elasticity of the lip, and lined with steel plate core, strong mechanical rigidity, in addition, the seal ring plays an axial guiding role for the cage.
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