Needle Roller Bearings - Ntn-snr.com

Drawn cup needle roller bearings
NTN
HMK
HMKT2
Type of bearing
Open end
Applied shaft
diameter (mm)
850
Composition of
nominal bearing number
HMK 20 15
Width
Inscribed circle
diameter
Type code
Nominal
bearing number
HMK2015
Code items
and dimensions
Inscribed circle
diameter :20
Width : 15
Remarks
The bearings with tail
code T2 using polyamide
resin cage shall be used
at allowable temperature
120˚C and, under
continuous running, at
100˚C and less.
HMKL
HMKLL
Heavy load series
Open end
single side seal
850
HMK 20 18 L
HMK 20 21 LL
Tail code
Width
Inscribed circle
diameter
Type code
HMK2018L
This seal type (Tail code :
L or LL) synthetic rubber
Inscribed circle
seal built in at its single
diameter :20
side or double sides is
Width : 18
internally filled with lithium
L : single side seal
soap base grease.
The operating temperature
shall range from -25 to
100˚C maximum to
prevent deterioration of
the seal and filled-up
grease.
Open end
double-side seal
850
Tail code
Width
Inscribed circle
diameter
Type code
M2021LL
Inscribed circle The roller length and rated
diameter :20 load of this bearing type
Width : 21 are shorter and smaller
LL: Double-side seal than those of the open
type of same dimension.
HMKZWD
Open end
double-row type
3850
HMK 38 45 ZW D
Tail code
Tail code
Width
Inscribed circle
diameter
Type code
HK3845ZWD
Inscribed circle
diameter :38
Width : 45
ZW : Double-row
cage
D : Outer ring with
oil hole
This type is provided with
oil hole on its outer ring.
B-31