QJ1256-N2-MPA-C3

Four-point contact bearing

Four point contact bearing QJ12..-N2-MPA, holding grooves, solid brass cage

Display units

Metric

Imperial

Main Dimensions & Performance Data

d	280 mm	Bore diameter
D	500 mm	Outside diameter
B	90 mm	Width
C_r	790,000 N	Basic dynamic load rating, radial
C_0r	1,600,000 N	Basic static load rating, radial
C_ur	45,500 N	Fatigue load limit, radial
n_G	2,240 1/min	Limiting speed
n_ϑr	1,110 1/min	Reference speed
≈m	81.8 kg	Weight

Mounting dimensions

d_{a min}	300 mm	Minimum diameter shaft shoulder
D_{a max}	480 mm	Maximum diameter of housing shoulder
r_{a max}	4 mm	Maximum fillet radius

Dimensions

r_min	5 mm	Minimum chamfer dimension
D₁	420.8 mm	Shoulder diameter outer ring
d₁	362.45 mm	Shoulder diameter inner ring
a	780 mm	Distance between the apexes of the pressure cones
a_n	15 mm	Hight retaining slot
b_n	12.5 mm	Width retaining slot
r_n	2.5 mm	Radius retaining slot
	45 °	Angle retaining slot
α	45 °	Contact angle

Temperature range

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

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Your current product variant

Cage	MPA	solid brass cage, outer ring guided
Design, bearing outer ring	N2	two retaining grooves in the outer ring on one side
Coating	Without
Tolerance class	PN	Normal (PN)
Dimensional / heat stabilization	S1	Rings dimensional stabilized up to 200°
Axial internal clearance	C3	Group 3 (C3), bigger than CN

Characteristics

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