outline dimension (mm)

d	240
D	340
T	78
T3	81.6
T4	92
γ (min)	2.1

specified load (N)

Ca	420000
C0a	1650000

Rated load load {kgf}

Ca	43000
C0a	168000

Rated speed min ^-1

Fat lubrication	560
oiling	850

bearing symbol

Flat base is ring type	51248X
Heart ball seat	53248X
Serical seat circle	53248XU

size (mm)

d1	335
D1	244
D2	290
D3	350
b	30
A	122
R	250

installation size (mm)

da （min）	299
da (max)	281
γa (max)	2

Weight (kg) (reference)

Flat base is ring type	23.7
Heart ball face type	25.6
Serical seat circle	30.7