Page 101 - needle bearings

Drawn cup needle roller bearings
NTN

C
C

C1
C1

ПD
ПFW
ПD ПFW

Type BK
Type BKʝZWD
Closed End Type

FW 20ʙ25mm

Boundary dimensions Basic load ratings Limiting speeds Bearing numbers Mass Appropriate 1)
dynamic static dynamic static inner ring
mm N kgf r/min kg
Fw D C C1 grease oil open end closed end
0 max
-0.2 Cr Cor Cr Cor design design (approx.) (as a reference)
26 30 ʕ 22 200 40 000 2 270 4 100 8 000 12 000 HK2030ZWD ʕ 0.035 IR17ʷ20ʷ30.5
26 30 2.7 22 200 40 000 2 270 4 100 8 000 12 000 ʕ BK2030ZWD 0.037 IR17ʷ20ʷ30.5
27 15 ʕ 13 000 17 300 1 330 1 760 8 000 12 000 HMK2015 ʕ 0.021 IR17ʷ20ʷ16.5
20
27 20 ʕ 17 700 25 600 1 800 2 610 8 000 12 000 HMK2020 ʕ 0.027 IR17ʷ20ʷ20.5
27 25 ʕ 22 000 34 000 2 240 3 450 8 000 12 000 HMK2025 ʕ 0.034 IR15ʷ20ʷ26
27 30 ʕ 26 100 42 000 2 660 4 300 8 000 12 000 HMK2030 ʕ 0.041 IR17ʷ20ʷ30.5
29 16 ʕ 15 300 19 100 1 560 1 940 7 500 11 000 HMK2116 ʕ 0.027 IR17ʷ21ʷ20
21
29 20 ʕ 19 400 25 800 1 970 2 630 7 500 11 000 HMK2120 ʕ 0.033 ʕ
28 12 ʕ 9 750 14 300 995 1 460 7 500 11 000 HK2212 ʕ 0.013 IR17ʷ22ʷ13
28 12 2.7 9 750 14 300 995 1 460 7 500 11 000 ʕ BK2212 0.015 IR17ʷ22ʷ13
28 16 ʕ 13 600 22 100 1 390 2 250 7 500 11 000 HK2216C ʕ 0.021 IR17ʷ22ʷ18
28 16 2.7 13 600 22 100 1 390 2 250 7 500 11 000 ʕ BK2216 0.024 IR17ʷ22ʷ18
28 20 ʕ 17 200 29 800 1 760 3 050 7 500 11 000 HK2220C ʕ 0.026 IR17ʷ22ʷ20.5
22 28 20 2.7 17 200 29 800 1 760 3 050 7 500 11 000 ʕ BK2220 0.030 IR17ʷ22ʷ20.5
29 10 ʕ 8 400 10 100 855 1 030 7 500 11 000 HMK2210 ʕ 0.015 IR17ʷ22ʷ13
29 15 ʕ 13 400 18 500 1 370 1 890 7 500 11 000 HMK2215 ʕ 0.022 IR17ʷ22ʷ16D
29 20 ʕ 18 200 27 400 1 860 2 790 7 500 11 000 HMK2220 ʕ 0.030 IR17ʷ22ʷ20.5
29 25 ʕ 23 600 38 500 2 410 3 900 7 500 11 000 HMK2225 ʕ 0.037 IR17ʷ22ʷ26
29 30 ʕ 26 900 45 000 2 740 4 600 7 500 11 000 HMK2230 ʕ 0.045 IR17ʷ22ʷ32
31 20 ʕ 18 800 29 100 1 910 2 970 6 500 10 000 HMK2420 ʕ 0.032 ʕ
24
31 28 ʕ 26 000 44 500 2 650 4 500 6 500 10 000 HMK2428 ʕ 0.045 IR20ʷ24ʷ28.5
32 12 ʕ 11 800 16 300 1 200 1 660 6 500 9 500 HK2512 ʕ 0.021 IR20ʷ25ʷ12.5
32 12 2.7 11 800 16 300 1 200 1 660 6 500 9 500 ʕ BK2512 0.023 IR20ʷ25ʷ12.5
32 16 ʕ 15 900 24 000 1 620 2 450 6 500 9 500 HK2516 ʕ 0.027 IR20ʷ25ʷ17
32 16 2.7 15 900 24 000 1 620 2 450 6 500 9 500 ʕ BK2516 0.031 IR20ʷ25ʷ17
25 32 20 ʕ 20 300 33 000 2 070 3 350 6 500 9 500 HK2520 ʕ 0.034 IR20ʷ25ʷ20.5
32 20 2.7 20 300 33 000 2 070 3 350 6 500 9 500 ʕ BK2520 0.039 IR20ʷ25ʷ20.5
32 26 ʕ 26 400 46 000 2 690 4 700 6 500 9 500 HK2526 ʕ 0.045 IR20ʷ25ʷ26.5
32 26 2.7 26 400 46 000 2 690 4 700 6 500 9 500 ʕ BK2526 0.049 IR20ʷ25ʷ26.5
32 38 ʕ 35 000 65 500 3 550 6 700 6 500 9 500 HK2538ZWD ʕ 0.065 IR20ʷ25ʷ38.5
Note 1) Bearing with inner ring is represented by HK+IR. (Refer to "Inner Ring Dimensions Table" on page B-119, B120.)
EX. HK2512 + IR20ʷ25ʷ12.5
B-39