YRTCMA260-XL

Axial/radial roller bearing

Axial/radial bearings, double direction, screw mounting, with integrated absolute angular measuring system

Two retaining screws

Shaft locating washer

Inner ring

Display units

Metric

Imperial

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	140,000 N	Basic dynamic load rating, radial
C_0r	355,000 N	Basic static load rating, radial
C_a	168,000 N	Basic dynamic load rating, axial
C_0a	1,090,000 N	Basic static load rating, axial
n_G	300 1/min	Limiting speed
M_R	9 Nm	Bearing friction torque at 5 1/min
≈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
	0.04 mm	Height contact face outerring H1 upper tolerance
	-0.04 mm	Height contact face outerring H1 lower tolerance
H₂	21 mm	Height contact face outer ring
	0.025 mm	Height contact face outerring H2 upper tolerance
	-0.025 mm	Height contact face outerring H2 lower tolerance
D_{1 max}	347 mm	Maximum bord diameter inner ring
D_M	345 mm	Diameter of dimensional scale on shaft locating washer
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	6,900 N/µm	Axial rigidity of bearing position
c_rL	5,300 N/µm	Radial rigidity of bearing position
c_kL	104,000 Nm/mrad	Tilting rigidity of bearing position
c_aL	19,000 N/µm	Axial rigidity of rolling element set
c_rL	8,100 N/µm	Radial rigidity of rolling element set
c_kL	265,000 Nm/mrad	Tilting rigidity of rolling element set

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Characteristics

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