Bearing Types
Rolling ball bearings manufactured by MinebeaMitsumi are mainly single-row radial deep groove ball bearings.
In addition to the open type, radial deep groove ball bearings are available with shields and seals to prevent foreign matter from entering and grease from leaking out.
Flange type and snap ring type bearings are available for improved housing fits. NMB also produces ultra thin type radial ball bearings, thrust ball bearings, special bearings, etc.
Deep groove ball bearings (R-, L-, RI-,A-)
Characteristics :
This is the most common type of radial ball bearing.
It can support not only radial loads but also axial loads in both directions.
Types : Open, shielded, sealed
Dimensions : Metric size, inch size
Deep groove ball bearings with flange (RF-, LF-, RIF-,A-)
Characteristics :
This is a radial ball bearing with a flange featured on one side of the outer ring surface. Enables easy positioning in the axial direction when mounting to the housing
Types : Open, shielded, sealed
Dimensions : Metric size, inch size
※Standard bearing material is stainless steel
Deep groove ball bearings with outer ring retaining ring (RNR-, LNR-)
Characteristics :
This is a radial ball bearing with an external retaining ring featured on one side of the outer ring surface.
Enables easy positioning in the axial direction when mounting to the housing.
Types : Open, shielded
Dimensions : Metric size
※Standard bearing material is high carbon chromium bearing steel
Thrust ball bearings (T-)
Characteristics :
A thrust ball bearing supports axial loads, but not radial loads.
Types : With raceway, without raceway
Dimensions : Metric size
※Standard bearing material is stainless steel
Special bearing (AS-)
Characteristics :
Bearings with additional functions such as alterations to the outer ring surface.
Types : With grooves on the outer ring surface, with O-ring, etc.
Related page
Engineering Information for Miniature & small ball bearings
Selecting the Right Part
Technical Data
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