ZARF2590-TV

Needle roller/axial cylindrical roller bearing

Needle roller/axial cylindrical roller bearings ZARF, double direction, for screw mounting

Display units

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Main Dimensions & Performance Data

d	25 mm	Bore diameter
D	90 mm	Outside diameter
H	60 mm	Hight
C_a	80,000 N	Basic dynamic load rating, axial
C_0a	199,000 N	Basic static load rating, axial
C_r	24,300 N	Basic dynamic load rating, radial
C_0r	41,500 N	Basic static load rating, radial
C_ua	18,600 N	Fatigue load limit, axial
C_ur	6,000 N	Fatigue load limit, radial
n_{G Oil}	4,900 1/min	Limiting speed for oil lubrication
n_{G Grease}	1,400 1/min	Limiting speed for grease lubrication
M_RL	1.6 Nm	Bearing friction torque
≈m	1.36 kg	Weight

Mounting dimensions

D_{a max}	63 mm	Maximum diameter of housing shoulder
d_{a min}	45 mm	Minimum diameter shaft shoulder
t₁	0.1 mm	Position bore in the housing

Dimensions

H₁	38 mm	Height outer ring over wave washer
C	18 mm	Width, outer ring
C₁	10 mm	Distance to lubrication hole
D₁	62 mm	Rip diameter shaft washer
B	12.5 mm	Width, inner ring
r_min	0.3 mm	Minimum chamfer dimension
r_{1 min}	0.6 mm	Minimum chamfer dimension
d₁	3.2 mm	Diameter lubrication hole
J	73 mm	Pitch circle diameter (holes)
n	12	Number of screwing holes
n x t	30 °	Split

Temperature range

T_min	-30 °C	Operating temperature min.
T_max	120 °C	Operating temperature max.

Additional information

c_aL	3,000 N/µm	Rigidity axial
c_kL	800 Nm/mrad	Tilting stiffness
M_m	3.88 kg*cm2	Mass moment of inertia
	1 µm	Axial runout
radial	ZMA25/58	Recommended INA precision locknut for radial locking (not included)
axial	AM25	Recommended INA precision locknut for axial locking (not included)
M_A	55 Nm	Tightening torque nut
	20,790 N	Required locknut force
	M6	Screw size
n_a	12	Number of screws
na x ta	30 °	Division (screwing holes)

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