Page 94 - needle bearings

Drawn cup needle roller bearings
NTN

Applied shaft Composition of Nominal Code items
Type of bearing Remarks
diameter (mm) nominal bearing number bearing number and dimensions
BK
ʢBKʝT2ʣ
BK 20 20 C The bearings with tail
code T2 using polyamide
Inscribed circle
Tail code resin cage shall be used
diameter :П20
Closed end П3ʙП50 Width BK2020C at allowable temperature
Width : 20
Inscribed circle C : Welding cage 120˚C and, under
diameter continuous running, at
Type code 100˚C and less.
BKʝL
This seal type (Tail code:
BK 20 18 L L) is internally filled up
Standard series Closed end П12ʙП50 Inscribed circle BK2018L Inscribed circle grease.
with lithium soap base
Tail code
diameter :П20
The operating temperature
Width
Width : 18
single side seal
shall range from -25 to
L : single side seal
100˚C maximum to
diameter
prevent deterioration of
Type code
the seal and filled-up
grease.
BKʝZWD
BK 20 30 ZW D
Inscribed circle
diameter :П20
Tail code
Closed end Tail code Width : 30 Inscribed circle
П15ʙП30 BK2030ZWD
double-row type Width ZW : Double-row diameter
cage
Inscribed circle
diameter D : Outer ring with
oil hole
Type code
DCL
DCL 16 20
Inch series Open end П6.35ʙ Inscribed circle DCL1620 Inscribed circle
diameter :П25.4
Width code
П50.8
Width : 31.75
diameter code
Type code

HCK HCK 16 22
Bearing series for universal joints Closed end П10ʙП20 Outer diameter HCK1622 Inscribed circle Full complement roller

type with no cage.
diameter :П16
Already filled up with
Width : П22
Inscribed circle
specific grease.
diameter
Type code

B-32