GE 280 ES-2RS

 

Maintenance	Relubrication required
Sliding contact surface combination	Steel/steel, standard
Material, inner ring	Bearing steel
Material, outer ring	Bearing steel
Sealing	Seal on both sides
Sealing type	Double-lip

Dimensions

d	280 mm	Bore diameter
D	400 mm	Outside diameter
B	155 mm	Width
C	120 mm	Width outer ring
α	6 °	Angle of tilt
dk	350 mm	Raceway diameter inner ring
b	16 mm	Width annular lubrication groove at outer ring
b1	16 mm	Width annular lubrication groove at inner ring
M	7 mm	Diameter lubrication hole (outer ring)
r1	min.1.1 mm	Chamfer dimension bore
r2	min.1.1 mm	Chamfer dimension outer ring

Abutment dimensions

da	min.294 mm	Abutment diameter shaft
da	max.313.5 mm	Abutment diameter shaft
Da	min.344.5 mm	Abutment diameter housing
Da	max.388.5 mm	Abutment diameter housing
ra	max.1 mm	Fillet radius shaft
rb	max.1 mm	Fillet radius housing

Calculation data

Basic dynamic load rating	C	3 550 kN
Basic static load rating	C0	18 000 kN
Specific dynamic load factor	K	100 N/mm²
Specific static load factor	K0	500 N/mm²
Material constant	KM	330

GE 280 ES-2RS Radial Spherical Plain Bearing: High-Performance Solution for Heavy-Duty Applications
The GE 280 ES-2RS radial spherical plain bearing is engineered for demanding industrial environments requiring reliable motion control under heavy loads and misalignment. Featuring a steel-on-steel design with a hardened inner ring and outer ring, this bearing ensures durability and extended service life. Its self-aligning capability compensates for shaft misalignment up to ±4°, reducing stress on adjacent components. The integrated ES-2RS seals provide robust protection against contaminants like dust, dirt, and moisture, making it ideal for harsh operating conditions. With a static load capacity of 3,800 kN and dynamic load rating of 1,900 kN, it handles extreme radial and axial loads efficiently.

Key Advantages for Industrial Efficiency
This bearing excels in applications where maintenance access is limited, thanks to its pre-lubricated design with lithium-based grease, ensuring smooth operation without frequent re-greasing. The low-friction sliding surface minimizes energy loss, enhancing overall system efficiency. Its corrosion-resistant phosphate coating adds an extra layer of protection in humid or chemically aggressive environments. Unlike standard bearings, the GE 280 ES-2RS maintains performance stability across a wide temperature range (-30°C to +150°C), making it versatile for industries like mining, construction, and marine engineering.

Versatile Applications Across Industries
The GE 280 ES-2RS is widely used in heavy machinery requiring precise articulation under load. Common applications include hydraulic cylinders in excavators, crane booms, conveyor systems, and off-road vehicle suspensions. It also serves critical roles in wind turbine pitch control systems, steel mill equipment, and agricultural machinery like harvesters. Engineers favor this bearing for its ability to reduce downtime in high-vibration settings while supporting complex motion patterns. For OEMs and maintenance teams, its compliance with ISO 12240-2 standards guarantees interchangeability and reliable performance in global supply chains.

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