NU 238 ECM/C3

 

Dimensions

Bore diameter	190 mm
Outside diameter	340 mm
Width	55 mm

Performance

Basic dynamic load rating	800 kN
Basic static load rating	965 kN
Reference speed	2 000 r/min
Limiting speed	2 200 r/min
SKF performance class	SKF Explorer

Properties

Bearing part	Complete bearing
Axial displacement capability	In both directions
Number of rows	1
Locating feature, bearing outer ring	None
Bore type	Cylindrical
Cage	Machined metal
Number of flanges, outer ring	2
Number of flanges, inner ring	0
Loose flange	None
Radial internal clearance	C3
Tolerance class	Normal
Coating	Without
Sealing	Without
Lubricant	None
Relubrication feature	Without

Logistics

Product net weight	23.1 kg
eClass code	23-05-09-01
UNSPSC code	31171505

NU 238 ECM/C3 Single Row Cylindrical Roller Bearing
The NU 238 ECM/C3 cylindrical roller bearing features a robust single-row design optimized for high radial load capacity and moderate axial displacement accommodation. Its ECM (Enhanced Capacity Model) construction incorporates a machined brass cage for improved heat resistance and reduced friction, ensuring stable performance in demanding conditions. With a C3 internal clearance, it accommodates thermal expansion in high-speed or high-temperature applications, making it ideal for industrial machinery requiring precision and durability.

Key Advantages for Industrial Use
Engineered for reliability, this bearing's optimized roller profile and surface finish minimize stress concentrations, extending service life even under heavy loads. The brass cage enhances lubrication retention and reduces wear, while the C3 clearance ensures consistent operation in variable thermal environments. Its separable design simplifies installation and maintenance, reducing downtime in critical equipment like gearboxes, pumps, and electric motors.

Typical Applications Across Industries
Commonly utilized in heavy-duty machinery, the NU 238 ECM/C3 excels in applications such as mining conveyors, paper mill rollers, and wind turbine gearboxes. It is also widely adopted in steel production lines and material handling systems where shock loads and misalignment are concerns. The bearing's ability to withstand high radial forces and thermal fluctuations makes it a preferred choice for industries prioritizing operational efficiency and reduced maintenance cycles.

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