B-30

Drawn cup needle roller bearings NTN

Type of bearing Composition ofnominal bearing numberApplied shaft

diameter (mm) Code items

and dimensionsNominal

bearing numberRemarks

HKHKT2

HK0609T2

HK2018L

HK2020LL

HK2030ZWD

HK 06 09 T2

Open end

Open endsingle side seal

350

HKL

1250

HKLL

Open enddouble-side seal

1250

HKZWD

Open enddouble-row type

1530

The bearings with tail code T2 using polyamide resin cage shall be used at allowable temperature120C and, undercontinuous running, at100C and less.

HK 20 18 L This seal type (Tail code :L or LL) synthetic rubberseal built in at its singleside or double sides isinternally filled with lithiumsoap base grease. The operating temperatureshall range from -25 to100C maximum toprevent deterioration ofthe seal and filled-upgrease.

The roller length and ratedload of this bearing typeare shorter and smallerthan those of the opentype of same dimension.

HK 20 20 LL

HK 20 30 ZW D

[Tail code]T2 : Resin cageC : Welding cage

This type is provided withoil hole on its outer ring.

Tail codeWidth

Inscribed circlediameter

Type code

Tail codeWidth

Inscribed circlediameter

Type code

Tail codeWidth

Inscribed circlediameter

Type code

Tail codeTail code

WidthInscribed circle

diameterType code

Inscribed circle diameter :6Width : 9T2 : Resin cage

Inscribed circle diameter :20Width : 18L : single side seal

Inscribed circle diameter :20Width : 20LL: Double-side seal

Inscribed circle diameter :20Width : 30ZW : Double-row cageD : Outer ring with oil hole

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http://www.bearing-needle.com/

B-31

Drawn cup needle roller bearings NTN

HMKHMKT2

HMK2015

HMK2018L

M2021LL

HK3845ZWD

HMK 20 15

Open end

Open endsingle side seal

850

HMKL

850

HMKLL

Open enddouble-side seal

850

HMKZWD

Open enddouble-row type

3850

HMK 20 18 L

HMK 20 21 LL

HMK 38 45 ZW D

Type of bearing Composition ofnominal bearing number

Applied shaftdiameter (mm)

Code itemsand dimensions

Nominalbearing number

Remarks

The bearings with tail code T2 using polyamide resin cage shall be used at allowable temperature120C and, undercontinuous running, at100C and less.

This seal type (Tail code :L or LL) synthetic rubberseal built in at its singleside or double sides isinternally filled with lithiumsoap base grease. The operating temperatureshall range from -25 to100C maximum toprevent deterioration ofthe seal and filled-upgrease.

The roller length and ratedload of this bearing typeare shorter and smallerthan those of the opentype of same dimension.

This type is provided withoil hole on its outer ring.

WidthInscribed circle

diameterType code

Tail codeWidth

Inscribed circlediameter

Type code

Tail codeWidth

Inscribed circlediameter

Type code

Tail codeTail code

WidthInscribed circle

diameterType code

Inscribed circle diameter :20Width : 15

Inscribed circle diameter :20Width : 18L : single side seal

Inscribed circle diameter :20Width : 21LL: Double-side seal

Inscribed circle diameter :38Width : 45ZW : Double-row cageD : Outer ring with oil hole

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B-32

Drawn cup needle roller bearings NTN

BKBKT2

Inscribed circle diameter :20Width : 20C : Welding cage

BK2020C

BK2018L

BK2030ZWD

DCL1620

BK 20 20 C

Closed end

Closed end single side seal

350

BKL

1250

BKZWD

Closed end double-row type

1530

DCL

Open end6.35 50.8

BK 20 18 L

BK 20 30 ZW D

DCL 16 20

Inscribed circlediameter

HCK1622

HCK

Closed end 1020

HCK 16 22

Type of bearing Composition ofnominal bearing number

Applied shaftdiameter (mm)

Code itemsand dimensions

Nominalbearing number

Remarks

The bearings with tail code T2 using polyamide resin cage shall be used at allowable temperature120C and, undercontinuous running, at100C and less.

This seal type (Tail code:L) is internally filled upwith lithium soap basegrease. The operating temperatureshall range from -25 to100C maximum toprevent deterioration ofthe seal and filled-upgrease.

Full complement rollertype with no cage. Already filled up withspecific grease.

Tail codeWidth

Inscribed circlediameter

Type code

Tail codeWidth

Inscribed circlediameter

Type code

Width codeInscribed circlediameter code

Type code

Outer diameterInscribed circle

diameterType code

Tail codeTail code

WidthInscribed circle

diameterType code

Inscribed circle diameter :20Width : 30ZW : Double-row cageD : Outer ring with oil hole

Inscribed circle diameter :20Width : 18L : single side seal

Inscribed circle diameter :25.4Width : 31.75

Inscribed circle diameter :16Width : 22

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Nominal inscribedcircle dia.

Fw

Nominal outerring outer dia.

D

Ring gaugebore dia.

Tolerance forinscribed circle diameter

High Low

Unit : mm

11.12512.71314.300

15.88817.47519.063

20.65022.23825.387

26.97528.56230.150

31.73733.32534.912

38.08738.08741.262

47.61250.78753.962

57.13760.312

6.4117.9989.586

11.17312.76114.348

15.93617.52319.086

20.67322.26123.848

25.43627.02328.611

30.19831.78634.963

38.14141.31644.493

47.66850.846

6.3887.9769.563

11.15112.73814.326

15.91317.50119.063

20.65022.23823.825

25.41327.00028.588

30.17531.76334.938

38.11341.28844.463

47.63850.815

6.3507.9389.525

11.11212.70014.288

15.87517.46219.050

20.63822.22523.812

25.40026.98828.575

30.16231.75034.925

38.10041.27544.450

47.62550.800

11.11212.70014.288

15.87517.46219.050

20.63822.22525.400

26.98828.57530.162

31.75033.33834.925

38.10038.10041.275

47.62550.80053.975

57.15060.325

Nominal inscribedcircle dia.

Fw

Nominal outerring outer dia.

D

Ring gaugebore dia.

Tolerance forinscribed circle diameter

High Low

Unit : mm

15.01617.11619.020

20.02022.02024.020

24.62027.920

10.02611.68713.031

14.03116.03118.031

18.03120.038

1011.65613

141618

1820

1517.119

202224

24.627.9

10.01111.66913.013

14.01316.01318.013

18.01320.017

B-35

Drawn cup needle roller bearings NTN

Table 6 Dimensional tolerance for inscribed circle diameter (Type DCL) Table 7 Dimensional tolerance for inscribed circle diameter (Type HCK)

Boundary dimensions Basic load ratings Limiting speeds Bearing numbers Mass Appropriate1)

mmdynamic static dynamic static inner ring

Fw D C C1

N kgf r/min kg

0 maxgrease oil open end closed end

-0.2 Cr Cor Cr Cor design design (approx.) (as a reference)

B-36

Note 1) Bearing with inner ring is represented by HK+IR. (Refer to "Inner Ring Dimensions Table" on page B-117.) EX. HK1012 + IR71016.5

Type HK, Type HKZWDType HMKType BK,, Type BKZWD

FW 310mm

Type HKZWDOpened End Type

FWD

C

D

C

Type HK, Type HMK

FW

36.5 6 925 565 94 58 33 000 50 000 HK0306T2 0.0006 6.5 6 0.8 925 565 94 58 33 000 50 000 BK0306T2 0.0007

48 8 1 770 1 270 180 129 30 000 45 000 HK0408T2 0.0016 8 8 1.6 1 770 1 270 180 129 30 000 45 000 BK0408T2 0.0018

59 9 2 640 2 190 269 224 27 000 40 000 HK0509T2 0.0019 9 9 1.6 2 640 2 190 269 224 27 000 40 000 BK0509T2 0.0021

610 9 2 660 2 280 272 233 25 000 37 000 HK0609T2 0.0022 10 9 1.6 2 660 2 280 272 233 25 000 37 000 BK0609T2 0.0024

711 9 3 400 3 250 345 330 23 000 34 000 HK0709 0.0025 11 9 1.6 3 400 3 250 345 330 23 000 34 000 BK0709 0.0027

12 10 3 850 3 950 395 400 20 000 30 000 HK0810C 0.0032 IR 5 812

12 10 1.6 3 850 3 950 395 400 20 000 30 000 BK0810C 0.0034 IR 5 812

8 15 10 3 800 2 870 390 293 20 000 30 000 HMK0810 0.0067 IR 5 812

15 15 6 600 5 800 675 590 20 000 30 000 HMK0815 0.0100 IR 5 816

15 20 9 050 8 750 925 890 20 000 30 000 HMK0820T2 0.0130

13 10 4 750 5 300 485 540 18 000 27 000 HK0910 0.0035 IR 6 912

13 10 1.6 4 750 5 300 485 540 18 000 27 000 BK0910 0.0039 IR 6 912

913 12 5 650 6 650 575 680 18 000 27 000 HK0912 0.0042 IR 6 912

13 12 1.6 5 650 6 650 575 680 18 000 27 000 BK0912 0.0045 IR 6 912

16 12 5 300 4 450 540 455 18 000 27 000 HMK0912 0.0087 IR 6 916

16 16 7 400 6 850 755 700 18 000 27 000 HMK0916 0.0120

14 10 4 500 5 100 460 520 16 000 24 000 HK1010 0.0038 IR 71010.5

14 10 1.6 4 500 5 100 460 520 16 000 24 000 BK1010 0.0042 IR 71010.5

14 12 5 900 7 250 605 735 16 000 24 000 HK1012 0.0045 IR 71016

1014 12 1.6 5 900 7 250 605 735 16 000 24 000 BK1012 0.0050 IR 71016

14 15 7 100 9 150 725 935 16 000 24 000 HK1015 0.0056 IR 71016

14 15 1.6 7 100 9 150 725 935 16 000 24 000 BK1015 0.0062 IR 71016

17 10 4 250 3 450 435 350 16 000 24 000 HMK