Boundary dimensions(mm)

Basic load ratings(N)

Limiting speeds(rpm)

Mass(g)

Bearing Number

Fw

D

C

Cr

Cor

Oil

(Approx.)

4

8

8

1540

1070

40000

1.8

BK0408TN

5

9

9

2200

1790

36000

2.1

BK0509

6

10

8

1830

1550

32000

2.2

BK0608

6

10

9

2650

2400

3000

2.6

BK0609

7

11

9

2800

2150

27000

2.9

BK0709

8

12

8

2550

2400

21000

3

BK0808

8

12

10

3700

3450

21000

3.4