NU 31/530 ECMA/HB1

 

Dimensions

d	530 mm	Bore diameter
D	870 mm	Outside diameter
B	272 mm	Width
D1	≈764 mm	Shoulder diameter of outer ring
F	612 mm	Raceway diameter of inner ring
r1,2	min.7.5 mm	Chamfer dimension
s	max.17.2 mm	Permissible axial displacement

Abutment dimensions

da	min.562 mm	Diameter of spacer sleeve
da	max.605 mm	Diameter of spacer sleeve
db	min.617 mm	Diameter of shaft abutment
Da	max.838 mm	Diameter of housing abutment
ra	max.6 mm	Radius of fillet

Calculation data

Basic dynamic load rating	C	7 480 kN
Basic static load rating	C0	14 600 kN
Fatigue load limit	Pu	1 040 kN
Reference speed		560 r/min
Limiting speed		950 r/min
Minimum load factor	kr	0.21
Limiting value	e	0.3
Calculation factor	Y	0

NU 31/530 ECMA/HB1 Single Row Cylindrical Roller Bearing: Robust Design for Heavy-Duty Applications
The NU 31/530 ECMA/HB1 cylindrical roller bearing is engineered for extreme radial load capacity and durability in demanding environments. Featuring a single-row design with a high number of rollers, this bearing optimizes load distribution, reducing stress concentrations. Its robust construction includes a hardened steel cage (ECMA designation) and precision-ground rollers, ensuring stability under high-speed or heavy-load conditions. The HB1 suffix indicates enhanced surface treatment for improved wear resistance, making it ideal for applications exposed to contamination or harsh operating temperatures.

Key Advantages for Industrial Performance
This bearing excels in applications requiring minimal axial displacement but maximum radial support. Its low-friction design minimizes heat generation, extending service life even in continuous operation. The absence of flanges on the outer ring allows for free axial movement of the shaft, simplifying installation in setups requiring thermal expansion compensation. Additionally, the optimized internal geometry reduces noise and vibration, a critical advantage for machinery in sectors like energy production or mining. Compatible with grease or oil lubrication systems, it offers flexibility across diverse operating conditions.

Typical Applications Across Industries
The NU 31/530 ECMA/HB1 is widely used in heavy machinery, including wind turbine gearboxes, rolling mill equipment, and large-scale pumps. Its ability to handle shock loads makes it suitable for construction equipment such as crushers and excavators. In the pulp and paper industry, it supports dryer drums where high temperatures and moisture resistance are essential. Regular maintenance checks for proper lubrication and alignment are recommended to maximize its operational lifespan, which often exceeds industry standards for similar-sized bearings.

Hot Tags: nu 31/530 ecma/hb1, nu 31/530 ecma/hb1 suppliers, HKT Split Cylindrical Roller Bearing 01EB300M, Drawn Cup Needle Roller Bearings With Open Ends, Spherical Roller Bearings, 100B75M bearing, Split Cylindrical Roller Bearing 01B560M, 01B35M Bearing