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YRTSMA260

Quantity (pieces)

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Two retaining screws

Shaft locating washer

Inner ring

Unit system

Main Dimensions & Performance Data

d	260 mm	Bore diameter
	0 mm	Bore diameter upper tolerance
	-0,018 mm	Bore diameter lower tolerance
D	385 mm	Outside diameter
	0 mm	Outside diameter upper tolerance
	-0,02 mm	Outside diameter lower tolerance
H	57,5 mm	Height
C_r	110.000 N	Basic dynamic load rating, radial
C_0r	305.000 N	Basic static load rating, radial
C_a	173.000 N	Basic dynamic load rating, axial
C_0a	1.050.000 N	Basic static load rating, axial
n_G	910 1/min	Limiting speed
≈m	18,7 kg	Weight

Mounting dimensions

J	280 mm	Pitch circle diameter fixing holes in inner ring
J₁	365 mm	Pitch circle diameter fixing holes in outer ring
d₁	9,3 mm	Fixing holes diameter inner ring
d₂	15 mm	Counterbore diameter of fixing holes
a	8,2 mm	Counterbore depth of fixing holes
	34	Quantity of fixing holes inner ring
d₃	9,3 mm	Fixing holes diameter outer ring
	33	Quantity of fixing holes outer ring
n	36	Pitch quantity
t	10 °	Pitch separation angle
G	M12	Threaded extraction hole
	3	Quantity of threaded extraction hole
M_A	34 Nm	Screw tightening torque
	2	Quantity of retaining screws
t₁	6 µm	Axial and radial runout, measurement standard; Measured on mounted bearing, with ideal adjacent construction.

Dimensions

H₁	36,5 mm	Height contact face outer ring
	0,05 mm	Height contact face outerring H1 upper tolerance
	-0,07 mm	Height contact face outerring H1 lower tolerance
H₂	21 mm	Height contact face outer ring
D_{1 max}	347 mm	Maximum diameter inner ring
C	18 mm	Width of outer ring

Temperature range

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

Additional information

c_aL	5.400 N/µm	Axial rigidity of bearing position
c_rL	1.600 N/µm	Radial rigidity of bearing position
c_kL	67.000 Nm/mrad	Tilting rigidity of bearing position
c_aL	16.800 N/µm	Axial rigidity of rolling element set
c_rL	5.800 N/µm	Radial rigidity of rolling element set
c_kL	201.000 Nm/mrad	Tilting rigidity of rolling element set
M_m	1.422 kg*cm2	Mass moment of inertia for rotating outer ring
M_m	2.074 kg*cm2	Mass moment of inertia for rotating inner ring