outline dimension (mm)

d	20
D	40
T	14
T3	14.7
T4	17
γ (min)	0.6

specified load (N)

Ca	22500
C0a	37500

Rated load load {kgf}

Ca	2290
C0a	3850

Rated speed min ^-1

Fat lubrication	4300
oiling	6300

bearing symbol

Flat base is ring type	51204
Heart ball seat	53204
Serical seat circle	53204U

size (mm)

d1	40
D1	22
D2	30
D3	42
b	5
A	18
R	36

installation size (mm)

da （min）	32
da (max)	28
γa (max)	0.6

Weight (kg) (reference)

Flat base is ring type	0.077
Heart ball face type	0.08
Serical seat circle	0.096