C 4188 K30MB/C083-CARB Circular roller bearing-FGFA bearings

C 4188 K30MB/C083 CARB toroidal roller bearing with tapered bore (1:30)

CARB spherical roller bearings are components that combine self-aligning capabilities with load-bearing advantages. They automatically compensate for misalignment between shafts and bearing housings while reliably sustaining radial loads and bidirectional axial forces. Characterised by high rigidity and superior impact resistance, they are well-suited for medium-to-high-speed applications. Featuring low friction coefficients and smooth operation, they also offer straightforward maintenance.

Bore type

Tapered 1:30

Dimensions

d	440 mm	Bore diameter
D	720 mm	Outside diameter
B	280 mm	Width
d₂	≈510 mm	Shoulder diameter of inner ring
D₁	≈637 mm	Shoulder or recess diameter of outer ring
s₁	max.27.8 mm	Permissible axial displacement
r_1,2	min.6 mm	Chamfer dimension

Abutment dimensions

d_a	min.466 mm	Diameter of shaft abutment
d_a	max.509 mm	Diameter of shaft abutment
D_a	min.606 mm	Diameter of housing abutment
D_a	max.694 mm	Abutment diameter housing
C_a	min.7.3 mm	Minimum width of space required in housing
r_a	max.5 mm	Radius of fillet
A negative value for C_a is theoretical.

Calculation data

FGFA performance class		FGFA Explorer
Basic dynamic load rating	C	7 500 kN
Basic static load rating	C₀	12 900 kN
Fatigue load limit	P_u	900 kN
Reference speed		500 r/min
Limiting speed		670 r/min
Misalignment factor	k₁	0
Internal clearance factor	k₂	0.1

Basic Parameters

Bearing Inner Diameter：440 mm
Bearing Outer Diameter：720 mm
Bearing Thickness：280 mm

Wafangdian Fafuge Bearing Co., Ltd., rooted in Wafangdian Bearing Industry Base, is an emerging professional bearing manufacturer. Drawing on the base’s profound industrial heritage, we have upheld craftsmanship since inception, integrated precision manufacturing into R&D and production, and focused on the R&D and refined production of spherical roller bearings.