VA250309-N

Slewing ring, four Point contact bearings, external gear

Display units

Metric

Imperial

Main Dimensions & Performance Data

d_i	235 mm	Bore Diameter
H	60 mm	Height
D_a	408.4 mm	Outside Diameter
D_{i ZT}	310 mm	Diameter centring outer ring
	IT8	Diameter centring outer ring tolerance
T	3	Length centering outer ring
t	8	Length centering inner ring
h_a	52.5 mm	Width outer ring
h_i	52.5 mm	height of individual ring
	0.06	Normal radial clearance min.
	0.25	Normal radial clearance max.
	0.1	Normal axial clearance min.
	0.41	Normal axial clearance max.
≈m	29.5 kg	Weight

Dimensions

D_i	308 mm	inner diameter outer ring
d_a	310 mm	Outside diameter inner ring
n_i	24	Number of fixing holes in inner ring
L_i	259 mm	Pitchcircle diameter fixing holes inner ring
d_B	13 mm	Fixing bore
n_a	24	Number of fixing holes in outer ring
L_a	359 mm	Pitchcircle diameter fixing holes outer ring
F_{r zul}	99,100 N	Max. radial load fixing screws (friction locking)
d₀	400 mm	Pitch circle diameter gearing
m	5 mm	Modul of gearing
z	80	Number of teeth
b	52.5 mm	Width gearing
F_{z norm}	12,900 N	Max. tooth force root fatigue strenght (at a shock factor of 1,2)
F_{z max}	18,800 N	Max. tooth force against tooth fracture (at a shock factor of 1,35)

Temperature range

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

Calculation factors

C_a	255,000 N	Basic dynamic load rating, axial
C_0a	640,000 N	Basic static load rating, axial
C_r	232,000 N	Basic dynamic load rating, radial (for radial load only)
C_0r	295,000 N	Basic static load rating, radial (for radial load only)

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Gearing

Normalized gear teeth on bearing ring

Characteristics

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