IKO Spherical Bushings
IKO spherical bushings are precision-engineered, self-aligning bearing units designed to accommodate shaft misalignment while supporting high radial loads. These maintenance-free components feature a spherical outer surface that rotates within a mating housing, providing ±3° to ±5° angular misalignment compensation.

IKO spherical bushings are maintenance-free, self-aligning bearing units designed to accommodate static and dynamic misalignment while supporting high radial loads. These components combine hardened spherical surfaces with specialized liner materials to provide long service life in oscillating or rotating applications.

Design Features

Construction: Hardened steel inner ring with PTFE composite liner (0.5mm thickness)

Surface Finish: Mirror-polished raceways (Ra ≤ 0.1μm)

Load Capacity: Dynamic radial load up to 350kN (SB-50 series)

Misalignment: Compensates up to ±4° angular deviation

Friction Coefficient: 0.08-0.12 (dry running)

Material Specifications

Inner Ring: Case-hardened chromium steel (HRC 58-62)

Liner Material:

Standard: PTFE fabric composite (PV limit: 3.5 N/mm²·m/s)

High-load: Bronze-filled PTFE (PV limit: 5.0 N/mm²·m/s)

Corrosion-resistant: PEEK composite (chemical resistant)

Performance Characteristics

Temperature Range: -40°C to +150°C (standard)

Speed Limit: 0.5 m/s (continuous rotation)

Wear Rate: <0.01mm per 100,000 oscillations

Service Life: 50,000+ hours (properly lubricated)

Product Series of IKO Spherical Bushings

SB Standard Series: Basic spherical bushings for general applications

SBL Lubricated Series: Pre-lubricated with grease reservoirs

*SBC Corrosion-Resistant*: 316 stainless steel construction

SBH Heavy Duty: Reinforced design for impact loads

Mounting Configurations

Housing Types:

Pillow block (ISO 113 standard)

Flange mount (DIN 5415)

Take-up unit (adjustable)

Shaft Connection:

Cylindrical bore (h6 tolerance)

Tapered bore (1:12 ratio)

Eccentric collar (for adjustment)

Application Guidelines

Industrial Machinery: Hydraulic cylinders, linkage systems

Automotive: Suspension components, steering linkages

Construction Equipment: Boom joints, pivot points

Material Handling: Conveyor rollers, crane sheaves

Maintenance Requirements

Lubrication:

Initial grease fill: 25-30% of void volume

Relubrication interval: 500 operating hours

Recommended grease: NLGI #2 lithium complex

Inspectionof IKO Spherical Bushings:

Measure radial clearance quarterly

Check for liner wear annually

Technical Advantages

40% higher load capacity than conventional bushings

Maintenance-free operation (lubricated-for-life versions)

Corrosion-resistant options available

Customizable dimensions and materials

Quality Standards

ISO 9001:2015 certified manufacturing

Dimensional tolerances per ISO 286

Material certifications available (EN 10204 3.1)

100% performance testing before shipment

This comprehensive specification covers all critical aspects of IKO spherical bushings, providing engineers with the necessary technical data for proper selection and application in various industrial environments. The bushings’ unique design combines high load capacity with self-aligning capabilities, making them ideal for applications requiring both performance and misalignment compensation.