SKF GE 30 ES-2RS Radial Spherical Plain Bearing
GE 30 ES-2RS is a maintenance-required, double-lip sealed metric radial spherical plain bearing from SKF. Radial spherical plain bearings are engineered to accommodate radial loads, combined radial and axial loads, and significant misalignment in mechanical systems. This specific model features a steel/steel sliding contact surface combination, double-lip contact seals on both sides, and lubrication holes with annular grooves in both rings for easy relubrication.
GE 30 ES-2RS is a maintenance-required, double-lip sealed metric radial spherical plain bearing from SKF. Radial spherical plain bearings are engineered to accommodate radial loads, combined radial and axial loads, and significant misalignment in mechanical systems. This specific model features a steel/steel sliding contact surface combination, double-lip contact seals on both sides, and lubrication holes with annular grooves in both rings for easy relubrication.
Key Features
- Designed for radial and combined radial-axial loads
- Exceptional load capacity for heavy static, alternating, or impact loads
- Long service life through optimized steel/steel contact surfaces
- Minimal maintenance requirements with accessible relubrication points
- Double-lip contact seals provide effective contamination exclusion and lubricant retention
- Accommodates up to 6° tilt angle for misalignment compensation
Official Technical Specifications
Dimensions
| Parameter | Value | Description |
|---|---|---|
| Bore diameter (d) | 30 mm | Inner diameter of the bearing |
| Outside diameter (D) | 47 mm | Outer diameter of the bearing |
| Width, inner ring (B) | 22 mm | Width dimension of the inner ring |
| Width, outer ring (C) | 18 mm | Width dimension of the outer ring |
| Angle of tilt (α) | 6° | Maximum permissible misalignment angle |
| Raceway diameter inner ring (dk) | 40.7 mm | Diameter of the inner ring raceway |
| Width annular lubrication groove (outer ring) (b) | 3.1 mm | Width of lubrication groove in outer ring |
| Width annular lubrication groove (inner ring) (b1) | 3.2 mm | Width of lubrication groove in inner ring |
| Diameter lubrication hole (outer ring) (M) | 2 mm | Diameter of lubrication hole in outer ring |
| Chamfer dimension bore (r1) | min. 0.6 mm | Minimum chamfer size on the bore |
| Chamfer dimension outer ring (r2) | min. 0.6 mm | Minimum chamfer size on the outer ring |
Abutment Dimensions
| Parameter | Value | Description |
|---|---|---|
| Abutment diameter shaft (da) | min. 33.3 mm / max. 34.2 mm | Recommended shaft diameter for proper abutment |
| Abutment diameter housing (Da) | min. 41.3 mm / max. 44 mm | Recommended housing diameter for proper abutment |
| Fillet radius shaft (ra) | max. 0.6 mm | Maximum allowable fillet radius on the shaft |
| Fillet radius housing (rb) | max. 0.6 mm | Maximum allowable fillet radius in the housing |
Performance Data
| Parameter | Value | Description |
|---|---|---|
| Basic dynamic load rating (C) | 62 kN | Dynamic load capacity for L10 rating life calculation |
| Basic static load rating (C0) | 310 kN | Static load capacity for permanent deformation calculation |
| Specific dynamic load factor (K) | 100 N/mm² | Specific dynamic load capacity coefficient |
| Specific static load factor (K0) | 500 N/mm² | Specific static load capacity coefficient |
| Material constant (KM) | 330 | Material constant for life calculation in harsh conditions |
Material & Design Properties
| Property | Specification |
|---|---|
| Sliding contact surface | Steel/steel, standard finish |
| Inner ring material | High-quality bearing steel |
| Outer ring material | High-quality bearing steel |
| Maintenance requirement | Relubrication required |
| Radial internal clearance | CN (Normal clearance) |
| Sealing system | Double-lip contact seals on both sides |
| Product net weight | 0.14 kg |
Model Code Interpretation
- GE: Metric radial spherical plain bearing designation
- 30: Bore diameter in millimeters (30 mm)
- ES: Steel/steel sliding contact surface with standard lubrication holes and annular grooves in both rings
- 2RS: Double-lip contact seals on both sides
Typical Applications
This bearing excels in applications requiring misalignment compensation with moderate to heavy loads, such as:
- Construction machinery articulation points
- Agricultural equipment linkages
- Industrial robot joints
- Material handling equipment
- Heavy-duty mechanical linkages
