GE280ES‑2RS Radial Spherical Plain Bearing

Basic Dimensions

• Bore d: 280 mm
• Outer diameter D: 400 mm
• Inner ring width B: 155 mm
• Outer ring width C: 120 mm
• Weight: approx 65 kg

Load Ratings

• Basic dynamic load C: 3570 kN
• Basic static load C₀: 17850 kN

Key Characteristics

• Structure: GE280ES-2RS with steel‑on‑steel sliding surface. Inner ring with convex spherical surface; split outer ring with concave spherical raceway.
• ES feature: Equipped with lubrication grooves and holes on both inner & outer rings, relubrication required.
• 2RS feature: Double‑lip contact seals on both sides. Protect sliding surfaces from dust, dirt and moisture; suitable for polluted working environment.
• Self‑aligning: Permissible misalignment angle α ≈ 6°. Compensate shaft‑housing misalignment and shaft deflection.
• Load capacity: Bear heavy radial load, combined radial‑axial load, alternating load and impact load. For slow oscillating / tilting motion, not for high‑speed rotation.
• Material: Inner & outer rings: high‑carbon chromium bearing steel (52100 / GCr15), heat‑treated. Sliding surface can be coated with MoS₂ for initial anti‑friction performance.
• Temperature range: ‑30 °C ~ +120 °C.
• Standard: ISO 12240‑1, metric series, interchangeable with mainstream brands.

Typical Applications

GE280ES-2RS is usually used in construction machinery, mining equipment, hydraulic cylinders, heavy‑duty pivot joints, swing assemblies.