SKF spherical roller bearings 22318EK/C3 90x190x64mm
The SKF 22318EK/C3 is a premium double-row spherical roller bearing with a tapered bore (1:12 ratio) and enhanced relubrication capabilities, designed for heavy-duty industrial applications requiring exceptional load-carrying capacity and self-alignment properties. This bearing combines SKF's advanced engineering with robust construction to deliver reliable performance in challenging operating conditions.
Product Overview
The SKF 22318EK/C3 is a premium double-row spherical roller bearing with a tapered bore (1:12 ratio) and enhanced relubrication capabilities, designed for heavy-duty industrial applications requiring exceptional load-carrying capacity and self-alignment properties. This bearing combines SKF's advanced engineering with robust construction to deliver reliable performance in challenging operating conditions.
Core Specifications
| Parameter | Value |
|---|---|
| Bearing Type | Double-row spherical roller bearing |
| Part Number | 22318EK/C3 |
| Inner Diameter (d) | 90 mm (3.543 in) |
| Outer Diameter (D) | 190 mm (7.480 in) |
| Width (B) | 64 mm (2.520 in) |
| Bore Type | Tapered (1:12) |
| Radial Clearance | C3 (slightly increased from standard) |
| Weight | 8.85 kg (19.51 lb) |
| Dynamic Load Rating (C) | 695 kN |
| Static Load Rating (C₀) | 637 kN |
| Cage Material | Sheet steel |
| Lubrication Features | Outer ring with lubrication groove and holes (W33) |
| Temperature Range | -30°C to +200°C (-22°F to +392°F) |
Design Features & Benefits
Key Design Elements
- Double-row symmetrical rollers: Maximize load distribution and bearing lifespan
- Spherical outer ring raceway: Provides automatic self-alignment capability, compensating for shaft deflections and misalignments up to 2°
- Tapered bore (1:12): Facilitates easy mounting/dismounting using adapter sleeves (recommended: H 318)
- Enhanced relubrication system: Outer ring with circumferential lubrication groove and three lubrication holes ensure efficient grease/oil distribution for extended service intervals
- EK designation: Indicates "Extra Capacity" design with optimized internal geometry for higher load ratings
- C3 clearance: Ideal for applications with temperature variations or high interference fits, preventing excessive internal friction
Performance Advantages
- Exceptional load handling: Accommodates heavy radial loads and significant bidirectional axial loads simultaneously
- Low friction operation: Optimized roller geometry minimizes friction and heat generation, improving energy efficiency
- High reliability: Robust construction withstands shock loads and harsh operating environments
- Versatile mounting: Tapered bore allows for quick, precise installation and removal without specialized tools
- Long service life: Premium bearing steel and advanced heat treatment ensure durability under demanding conditions
Applications
The SKF 22318EK/C3 is specifically engineered for use in heavy industrial machinery where reliability and performance are critical:
- Mining & construction equipment: Crushers, vibrating screens, conveyor systems, and excavator components
- Power generation: Wind turbine gearboxes, hydroelectric generators, and steam turbine auxiliary systems
- Pulp & paper industry: Paper machine rolls, calenders, and press sections
- Material handling: Crane hooks, hoists, and heavy-duty conveyor rollers
- Marine applications: Propulsion systems, deck machinery, and winches
- General industrial: Gearboxes, pumps, compressors, and fans operating under heavy loads
Installation & Maintenance Guidelines
- Mounting: Use SKF H 318 adapter sleeve for tapered bore installation; apply proper interference fit to ensure secure seating
- Lubrication: Compatible with mineral oils and lithium-based greases; follow SKF's lubrication chart for optimal viscosity selection based on operating speed and temperature
- Relubrication: Schedule periodic maintenance using the outer ring lubrication holes to replenish lubricant and remove contaminants
- Alignment: While self-aligning, ensure initial shaft/housing alignment within recommended limits for maximum bearing life
- Dismounting: Utilize the tapered bore design with appropriate withdrawal sleeves for safe, damage-free removal
