XA120235-N-ZT

Crossed roller, bearingswith external gear teeth, sealed

Crossed roller bearings with external gear teeth, sealed

Display units

Metric

Imperial

Main Dimensions & Performance Data

d₁	171 mm	Bore Diameter
d_iZT	173 mm	Diameter centring inner ring
	IT8	Diameter centring inner ring tolerance
t	6 mm	Length centering inner ring
D_a	318.8 mm	Outside Diameter
D_{i ZT}	238 mm	Diameter centring outer ring
	IT8 mm	Diameter centring outer ring tolerance
T	2.6 mm	Length centering outer ring
H	40 mm	Height
≈m	13.2 kg	Weight

Dimensions

D_i	236 mm	Inner diameter outer ring
h_a	35 mm	Width outer ring
L_a	275 mm	Pitchcircle diameter fixing holes outer ring
n_a	12	Number of fixing holes in outer ring
b	35 mm	Width gearing
m	4 mm	Modul of gearing
z	78	Number of teeth
d₀	312 mm	Pitch circle diameter gearing
F_{z norm}	11,000 N	Max. tooth force root fatigue strenght (at a shock factor of 1,2)
F_{z max}	16,100 N	Max. tooth force against tooth fracture (at a shock factor of 1,35)
d_a	234 mm	Outside diameter inner ring
	0.2 mm	Outside diameter inner ring upper tolerance
	-0.2 mm	Outside diameter inner ring lower tolerance
h	35 mm	height of individual ring
d_B	13 mm	Fixing bore
L_i	195 mm	Pitchcircle diameter fixing holes inner ring
n_i	12	Number of fixing holes in inner ring

Temperature range

T_min	-30 °C	Operating temperature min.
T_max	80 °C	Operating temperature max.

Calculation factors

C_a	129,000 N	Basic dynamic load rating, axial
C_0a	280,000 N	Basic static load rating, axial
C_r	92,000 N	Basic dynamic load rating, radial (for radial load only)
C_0r	138,000 N	Basic static load rating, radial (for radial load only)
VSP_max	0.02 mm	Maximum bearing preload
VSP_min	0 mm	Min. bearing preload
F_{r zul}	49,600 N	Max. radial load fixing screws (friction locking)

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Centering	ZT	Centering on inner and outer ring
Gearing	N	Normalized gear teeth on bearing ring

Characteristics

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