ZARN2557-L-TV

Needle roller/axial cylindrical roller bearing

Needle roller/axial cylindrical roller bearings ZARN..-L, double direction, long shaft locating washer

Display units

Metric

Imperial

Main Dimensions & Performance Data

d	25 mm	Bore diameter
D	57 mm	Outside diameter
H	65 mm	Hight
C_a	35,500 N	Basic dynamic load rating, axial
C_0a	86,000 N	Basic static load rating, axial
C_r	22,600 N	Basic dynamic load rating, radial
C_0r	36,000 N	Basic static load rating, radial
C_ua	7,300 N	Fatigue load limit, axial
C_ur	5,200 N	Fatigue load limit, radial
n_{G Oil}	6,000 1/min	Limiting speed for oil lubrication
n_{G Grease}	1,900 1/min	Limiting speed for grease lubrication
M_RL	0.55 Nm	Bearing friction torque
≈m	0.592 kg	Weight

Mounting dimensions

D_{a max}	48 mm	Maximum diameter of housing shoulder
d_{a min}	34 mm	Minimum diameter shaft shoulder

Dimensions

H₁	50 mm	Height outer ring over wave washer
C	20 mm	Width, outer ring
D₁	47 mm	Rip diameter shaft washer
D₂	36 mm	Heeldiameter wave washer long
D₃	45 mm	Outside diameter wave washer long
B	10 mm	Width, inner ring
B₁	25 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

Temperature range

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

Additional information

c_aL	1,900 N/µm	Rigidity axial
c_kL	350 Nm/mrad	Tilting stiffness
M_m	1.15 kg*cm2	Mass moment of inertia
	1 µm	Axial runout
radial	ZMA25/45	Recommended INA precision locknut for radial locking (not included)
axial	AM25	Recommended INA precision locknut for axial locking (not included)
M_A	25 Nm	Tightening torque nut
	9,745 N	Required locknut force
	36X47X7	Rotary shaft seal to DIN 3760 (not included)

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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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