ZARF2068-L-TV

Needle roller/axial cylindrical roller bearing

Needle roller/axial cylindrical roller bearings ZARF..-L, double direction, for screw mounting, long shaft locating washer

Display units

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Imperial

Main Dimensions & Performance Data

d	20 mm	Bore diameter
D	68 mm	Outside diameter
H	60 mm	Height
C_a	33,500 N	Basic dynamic load rating, axial
C_0a	76,000 N	Basic static load rating, axial
C_r	14,900 N	Basic dynamic load rating, radial
C_0r	22,400 N	Basic static load rating, radial
C_ua	6,400 N	Fatigue load limit, axial
C_ur	3,400 N	Fatigue load limit, radial
n_{G Oil}	7,000 1/min	Limiting speed for oil lubrication
n_{G Grease}	2,000 1/min	Limiting speed for grease lubrication
M_RL	0.5 Nm	Bearing friction torque
≈m	0.534 kg	Weight

Mounting dimensions

D_{a max}	43 mm	Maximum diameter of housing shoulder
d_{a min}	28 mm	Minimum diameter shaft shoulder
t₁	0.1 mm	Position bore in the housing

Dimensions

H₁	43 mm	Height outer ring over wave washer
C	14 mm	Width, outer ring
C₁	8 mm	Distance to lubrication hole
D₁	42 mm	Rip diameter shaft washer
D₂	30 mm	Heeldiameter wave washer long
D₃	40 mm	Outside diameter wave washer long
B	10 mm	Width, wave washer
B₁	24 mm	Width wave washer long
B₂	12 mm	Width heel wave washer long
r_min	0.3 mm	Minimum chamfer dimension
r_{1 min}	0.6 mm	Minimum chamfer dimension 1
d₁	3.2 mm	Diameter lubrication hole
J	53 mm	Pitch circle diameter (holes)
n	8	Number of screwing holes
n x t	45 °	Split

Temperature range

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

Additional information

c_aL	1,800 N/µm	Rigidity axial
c_kL	230 Nm/mrad	Tilting stiffness
M_m	0.683 kg*cm2	Mass moment of inertia
	1 µm	Axial runout
radial	ZMA20/38	Recommended INA precision locknut for radial locking (not included)
axial	AM20	Recommended INA precision locknut for axial locking (not included)
M_A	18 Nm	Tightening torque nut
	8,972 N	Required locknut force
	30X42X7	Rotary shaft seal to DIN 3760 (not included)
	M6	Size fixing screws DIN EN ISO 4762 10.9 (not included)
n_a	8	Number of screws
na x ta	45 °	Division (screwing holes)

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Your current product variant

Cage	TV	Plastic Cage made from PA66
Locating Feature , bearing outer ring	L	Stepped shaft locating washer extended on one side

Characteristics

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