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FAG INA Schaeffler

INA

VSI250755-N-ZT-RL0

Slewing ring, Four Point contact bearing, internal gear teeth VSI250755-N-ZT-RL0

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Main Dimensions & Performance Data

d₁	610 mm	Bore Diameter
d_aZT	755 mm	Diameter centring inner ring
	-IT8	Diameter centring inner ring tolerance
T	19 mm	Length centering inner ring
H	80 mm	Height
D_a	855 mm	Outside Diameter
D_{a ZT}	853 mm	Diameter centring outer ring
	-IT8	Diameter centring outer ring tolerance
T	15 mm	Length centering outer ring
h_a	54 mm	Width outer ring
h_i	71 mm	Width inner ring
	0.03 mm	Normal radial clearance min.
	0.13 mm	Normal radial clearance max.
	0.05 mm	Normal axial clearance min.
	0.24 mm	Normal axial clearance max.
≈m	119 kg	Weight

Dimensions

D_i	753 mm	Inner diameter outer ring
L_a	815 mm	Pitchcircle diameter fixing holes outer ring
n_a	24	Number of fixing holes in outer ring
d_B	22 mm	Fixing bore
d_a	757 mm	Outside diameter inner ring
L_i	694 mm	Pitchcircle diameter fixing holes inner ring
d_Bi	M20	Tread fixing bore
G_l	40 mm	Thread depth fixing hole
n_i	24	Number of fixing holes in inner ring
F_{r zul}	380,000 N	Max. radial load fixing screws (friction locking)
m	10 mm	Modul of gearing
z	63	Number of teeth
d₀	630 mm	Pitch circle diameter gearing
F_{z norm}	68,000 N	Max. tooth force root fatigue strenght (at a shock factor of 1,2)
F_{z max}	98,900 N	Max. tooth force against tooth fracture (at a shock factor of 1,35)

Calculation factors

C_a	340,000 N	Basic dynamic load rating, axial
C_0a	2,700,000 N	Basic static load rating, axial
C_r	305,000 N	Basic dynamic load rating, radial
C_0r	1,230,000 N	Basic static load rating, radial

Your current product variant

Centering	ZT	Centering on inner and outer ring
Gearing	N	Normalized gear teeth on bearing ring
Radial internal clearance	RL0	Radial clearance 0 to 0,05; axial tilting clearance 0 to 0,08

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