NU 31/500 ECMA/HB1-Cylindrical roller bearing-FGFA bearings

NU 31/500 ECMA/HB1 Single row cylindrical roller bearing, NU design

Cylindrical roller bearings feature cylindrical rollers as rolling elements and are classified as separable bearings. The rollers and raceways engage in line contact, enabling high load-carrying capacity. Primarily designed to accommodate radial loads, these bearings exhibit minimal friction between the rolling elements and the flange of the bearing ring, making them suitable for high-speed rotation. They offer exceptional load-carrying capability and maximum rotational speeds.

Dimensions

d	500 mm	Bore diameter
D	830 mm	Outside diameter
B	264 mm	Width
D₁	≈728 mm	Shoulder diameter of outer ring
F	576 mm	Raceway diameter of inner ring
r_1,2	min.7.5 mm	Chamfer dimension
s	max.14.5 mm	Permissible axial displacement

Abutment dimensions

d_a	min.532 mm	Diameter of spacer sleeve
d_a	max.564 mm	Diameter of spacer sleeve
d_b	min.581 mm	Diameter of shaft abutment
D_a	max.798 mm	Diameter of housing abutment
r_a	max.6 mm	Radius of fillet

Calculation data

Basic dynamic load rating	C	6 440 kN
Basic static load rating	C₀	12 000 kN
Fatigue load limit	P_u	880 kN
Reference speed		600 r/min
Limiting speed		1 000 r/min
Minimum load factor	k_r	0.21
Limiting value	e	0.3
Calculation factor	Y	0

Basic Parameters

Bearing Inner Diameter：500 mm
Bearing Outer Diameter：830 mm
Bearing Thickness：264 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.