Name: 30248-XL Tapered Roller Bearings
Brand: schaeffler Medias

Main Dimensions & Performance Data

d	240 mm	Bore diameter
D	440 mm	Outside diameter
B	72 mm	Width, inner ring
C	60 mm	Width, outer ring
T	79 mm	Width, total
C_r	1.190.000 N	Basic dynamic load rating, radial
C_0r	1.530.000 N	Basic static load rating, radial
C_ur	174.000 N	Fatigue load limit, radial
n_G	1.980 1/min	Limiting speed
n_ϑr	1.040 1/min	Thermal speed rating
≈m	46,8 kg	Weight

Mounting dimensions

d_{a max}	285 mm	Maximum diameter of shaft shoulder
d_{b min}	257 mm	Minimum diameter of shaft shoulder
D_{a min}	383 mm	Minimum diameter of housing shoulder
D_{a max}	420 mm	Maximum diameter of housing shoulder
D_{b min}	410 mm	Minimum diameter of housing shoulder
C_{a min}	10 mm	Minimum axial space
C_{b min}	19 mm	Minimum axial space
r_{a max}	5 mm	Maximum fillet radius of shaft
r_{b max}	4 mm	Maximum fillet radius of housing

Dimensions

r_{1, 2 min}	5 mm	Minimum chamfer dimension of inner ring back face
r_{3, 4 min}	4 mm	Minimum chamfer dimension of outer ring back face
a	76 mm	Distance between the apexes of the pressure cones
d₁	322,5 mm	Guidance rib diameter of inner ring

Temperature range

T_min	-30 °C	Operating temperature min.
T_max	200 °C	Operating temperature max.

Calculation factors

e	0,36	Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y
Y	1,68	Dynamic axial load factor
Y₀	0,92	Static axial load factor

Tolerance class	PN	Normal (ISO 492:2014)
Heat treatment	Standard
Cage	Standard	Sheet steel cage, window cage, roller-guided
Internal design	Standard
Quality level	XL	X-life
Number of rolling element rows	1	Single-row design

30248-XL

Tapered roller bearing