QJ248N2.MPA

Four-point contact bearing, single row, split inner ring, contact angle 35°, 2 holding grooves, brass cage guided on outer shoulder, rings and rolling elements made of high-quality roller bearing steel

Overview

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QJ248N2.MPA

Technical data

*) the unit "B" in the graphics corresponds in English to the unit "W" for "Width".

Dimensions

d(mm)240Bore diameter

D(mm)440Outer diameter

W(mm)72Width

r_{s min}(mm)4Minimal edge distance

a(mm)238Span

H(mm)367Shoulder diameter outer ring

J(mm)312.5Shoulder diameter inner ring

a_n(mm)15.6Groove depth

b_n(mm)12.5Groove width

r_n(mm)2.5Groove base radius

Contact angle

α(°)35Contact angle

Connecting dimensions

d_{a min}(mm)257Minimal diameter of shaft shoulder

D_{a max}(mm)423Maximal diameter of housing shoulder

r_{a max}(mm)3Maximal rounding radius

Performance data

C_r(kN)635Dynamic load rating, radial

C_0r(kN)1100Static load rating, radial

C_ur(kN)31.3Fatigue limit load, radial

n_G(min^-1)2800Limit speed

n_B(min^-1)1300Reference speed

Mass

kg53.1Mass