Suffixes L - N

L
  1. Machined light alloy cage, different designs or materials are identified by a figure, e.g. L1
  2. Adapter sleeve with a lock nut with lower sectional height
  3. KMFE lock nut with a smaller contact diameter
  4. Polymer ball bearing with components made of polyphenylensulfide (PPS)
  5. Annular groove with two lubrication holes on the non-thrust side of the outer ring and two annular grooves fitted with O-rings in the outer ring
L1Annular groove with two lubrication holes on the thrust side of the outer ring and two annular grooves fitted with O-rings in the outer ring
L4BBearing rings and rollers black oxidized
L5BRollers black oxidized
L5DANo Wear bearings with coated rolling element
L7BInner ring and rollers black oxidized
L7DANoWear bearings with coated rolling elements and inner ring raceway(s)
LAMachined light alloy cage, outer ring centred
LBMachined light alloy cage, inner ring centred
LHTGrease with a lithium thickener of consistency 2 to 3 to the NLGI Scale for a temperature range –50 to +140 °C
LOBearing without preservative, but coated with low viscosity oil; the actual oil is identified by figures following the LO, e.g. LO10
LPLight alloy window-type cage, with punched or reamed pockets, inner or outer ring centred
LPSAs LP but with lubrication grooves in the guiding surfaces
LSContact seal made of polyurethane (PUR) with or without sheet steel reinforcement, on one side of the bearing
2LSLS contact seal, on both sides of the bearing
LTGrease with a lithium thickener of consistency 2 to the NLGI Scale for a temperature range –50 to +110 °C (normal fill grade)
LT10
Grease with a lithium thickener of consistency 2 to the NLGI Scale for a temperature range –50 to +90 °C
M
  1. Machined brass cage, rolling element centred; different designs or material grades are identified by a figure or a letter, e.g. M2, MC
  2. Polymer ball bearing with components made of polyimide (PI)
M../M..Diameter tolerance of needle rollers, e.g. M2/M4 indicates diameter tolerance –2 to –4 µm
MAMachined brass cage, outer ring centred
MASMachined brass cage, outer ring centred, the S indicates a lubrication groove in the guiding surface
MB, MB1Machined brass cage, inner ring centred
MBSMachined brass cage, inner ring centred, the S indicates a lubrication groove in the guiding surface
MH
Machined brass cage, window-type, inner ring centred
MLMachined brass cage, window-type, inner or outer ring centred, depending on bearing design
MOBearing without preservative, but coated with medium viscosity oil; the actual oil is identified by figures following the MO, e.g. MO10
MPMachined brass cage, window-type, inner or outer ring centred, depending on bearing size
MPSAs MP but with lubrication grooves in the guiding surfaces
MRMachined brass cage, window-type, roller centred
MT33Grease with a lithium thickener of consistency 3 to the NLGI Scale for a temperature range –30 to +120 °C
MT47Grease with a lithium thickener of consistency 2 to the NLGI Scale for a temperature range –30 to +110 °C
NSnap ring groove in the outer ring
N/M..
Diameter tolerance of needle rollers, e.g. N/M2 indicates diameter tolerance 0 to –2 µm
N1One locating slot (notch) in one outer ring side face or housing washer
N2Two locating slots (notches) 180° apart in one outer ring side face or housing washer
NR
Snap ring groove in the outer ring, with appropriate snap ring
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