XSA140744-N

Crossed roller, bearingswith external gear teeth, sealed

Crossed roller bearings, standard series 14, external gear teeth, lip seals on both sides

Display units

Metric

Imperial

Main Dimensions & Performance Data

d_iZT	674 mm	Diameter centring inner ring
	IT7	Diameter centring inner ring tolerance
t	10 mm	Length centering inner ring
D_a	838.1 mm	Outside Diameter
D_{i ZT}	747 mm	Diameter centring outer ring
	IT7 mm	Diameter centring outer ring tolerance
T	4.5 mm	Length centering outer ring
H	56 mm	Height
≈m	60 kg	Weight

Dimensions

h_a	44.5 mm	Width outer ring
L_a	785 mm	Pitchcircle diameter fixing holes outer ring
n_a	36	Number of fixing holes in outer ring
b	44.5 mm	Width gearing
m	6 mm	Modul of gearing
z	138	Number of teeth
d₀	828 mm	Pitch circle diameter gearing
F_{z norm}	21,300 N	Max. tooth force root fatigue strenght (at a shock factor of 1,2)
F_{z max}	31,500 N	Max. tooth force against tooth fracture (at a shock factor of 1,35)
d_a	743 mm	Outside diameter inner ring
	0 mm	Outside diameter inner ring upper tolerance
	-0.6 mm	Outside diameter inner ring lower tolerance
h	44.5 mm	height of individual ring
d_B	14 mm	Fixing bore
L_i	698 mm	Pitchcircle diameter fixing holes inner ring
n_i	40	Number of fixing holes in inner ring
	M12	Tread fixing bore
t_G	20 mm	Thread depth oil connector
	0.05 mm	Running accuracy A (related to the raceway)
	0.05 mm	Running accuracy B (related to the raceway)
	0.08 mm	Running accuracy C (related to the raceway)
	0.08 mm	Running accuracy D (related to the raceway)

Temperature range

T_min	-25 °C	Operating temperature min.
T_max	80 °C	Operating temperature max.

Calculation factors

C_a	275,000 N	Basic dynamic load rating, axial
C_0a	970,000 N	Basic static load rating, axial
C_r	195,000 N	Basic dynamic load rating, radial (for radial load only)
C_0r	475,000 N	Basic static load rating, radial (for radial load only)
VSP_max	0.04 mm	Maximum bearing preload
VSP_min	0.01 mm	Min. bearing preload
F_{r zul}	148,700 N	Max. radial load fixing screws (friction locking)

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Gearing

Normalized gear teeth on bearing ring

Characteristics

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