Articulated Movement, Heavy Load Support & Reliable Pivot Performance

A hydraulic cylinder changes angle. A loader linkage moves through its working range. A machine joint repeatedly oscillates under load.

These applications need more than a conventional bearing designed for continuous shaft rotation. They require components capable of accommodating specified angular movement while supporting the forces acting through the joint.

Spherical plain bearings use matching spherical sliding surfaces between their inner & outer rings. This construction makes them suitable for selected pivoting, oscillating & misalignment applications.

Explore Industrial Shed's Spherical Plain Bearings collection for radial spherical plain bearings, sealed configurations, PTFE-lined designs & metric or imperial replacement components. The previously reviewed assortment includes references from IKO, JAP Bearing & SDTZ across GE-style, SB-style & related series.

Choosing the correct replacement starts with understanding the joint's movement, load direction, dimensions & lubrication requirements.

When Should You Choose a Spherical Plain Bearing?

Consider a pivot that moves through a limited angle rather than rotating continuously at high speed.

A conventional rolling bearing may not be appropriate where the equipment is specifically designed around a spherical sliding interface.

Spherical plain bearings can suit specified applications involving:

• Hydraulic cylinder pivots: joints that change angle during extension & retraction.

• Loader & agricultural linkages: articulated mechanisms exposed to changing loads.

• Construction machinery: pivot assemblies with oscillating movement.

• Industrial control linkages: components requiring controlled angular displacement.

• Material-handling equipment: compatible joints subject to repeated movement.

• Engineered supports: applications where the bearing accommodates specified misalignment.

If the component instead supports a continuously rotating shaft, compare the available Ball Bearings before choosing a sliding-contact design.

The correct bearing must match the machine's original load ratings, permissible movement & maintenance requirements.

Radial Spherical Plain Bearings vs Rolling Bearings

What makes a spherical plain bearing different?

A conventional ball or roller bearing uses rolling elements between its rings to reduce friction during rotation.

A spherical plain bearing uses a sliding contact interface between its inner & outer rings.

This allows the inner ring to articulate through a specified angular range relative to the outer ring.

The distinction matters in slow-moving or oscillating joints where the machine requires a spherical sliding interface.

For applications using rollers to follow a guide surface rather than articulate within a pivot, explore Cam Followers.

Spherical plain bearings are not automatically suitable for continuous high-speed rotation. Their permitted movement, sliding speed & load conditions must be checked against manufacturer specifications.

GE Series Spherical Plain Bearings - Identify the Complete Part Number

Found a GE20ES, GE25ES-2RS or similar designation on the old bearing?

The complete code is your most useful starting point.

The previously reviewed Industrial Shed assortment included GE-style spherical plain bearings in different dimensions & constructions.

Examples included:

• GE20ES-2RS: a listed IKO reference with 20mm bore, 35mm outside diameter & 16mm nominal outer-ring width.

• GE25ES-2RS: a listed IKO reference with 25mm bore, 42mm outside diameter & 20mm nominal outer-ring width.

• GE20EC: a listed PTFE-lined reference with 20mm bore, 35mm outside diameter & 16mm nominal outer-ring width.

These examples demonstrate why matching the main dimensions is only part of replacement identification.

A metal-to-metal bearing & a PTFE-lined bearing may share nominal dimensions while having different sliding surfaces, maintenance requirements & operating characteristics.

Before ordering, confirm:

• Complete manufacturer's designation.

• Bore diameter.

• Outside diameter.

• Inner-ring width.

• Outer-ring width.

• Seal configuration.

• Sliding-surface material.

• Lubrication requirements.

• Load ratings.

• Permissible angular displacement.

Manufacturer-specific suffix meanings should be checked against the relevant technical documentation.

Metal-to-Metal vs PTFE-Lined Spherical Plain Bearings

Which bearing construction suits your machinery?

The answer depends on load, movement, maintenance access & the original equipment design.

Metal-to-metal spherical plain bearings use metallic sliding surfaces. Many designs require lubrication to manage friction & wear under their specified operating conditions.

PTFE-lined spherical plain bearings incorporate a low-friction liner intended for particular loading, movement & maintenance conditions.

A PTFE-lined design may reduce routine relubrication requirements in suitable applications, but it is not automatically suitable for every joint.

Consider:

• Load magnitude & direction.

• Oscillation angle.

• Movement frequency.

• Sliding speed.

• Operating temperature.

• Contamination exposure.

• Maintenance access.

• Manufacturer-approved liner limits.

Where machinery operates in agricultural conditions, browse Agricultural Bearings for other bearing requirements associated with farm equipment. These products serve different functions, so selection must remain application-specific.

Changing from a lubricated bearing to a PTFE-lined alternative requires verification of the complete specification.

Open vs Sealed Spherical Plain Bearings

Dusty construction sites, agricultural machinery & exposed industrial equipment can create demanding conditions for pivot bearings.

A sealed spherical plain bearing incorporates a specified sealing arrangement intended to help manage contamination at the sliding interface.

Open designs rely on their intended lubrication & surrounding protection arrangements.

Before choosing a configuration, assess:

• Dust & abrasive particles.

• Moisture or washdown exposure.

• Grease access.

• Operating temperature.

• Movement frequency.

• Maintenance intervals.

• Original equipment requirements.

A 2RS suffix commonly identifies a sealing arrangement, but the exact seal construction depends on the manufacturer & bearing series.

Seals can help manage contamination; they do not eliminate the effects of incorrect installation, unsuitable loading or damaged pivot components.

Metric vs Imperial Spherical Plain Bearings

An imperial bearing may appear close in size to a metric alternative, but approximate measurements are not enough.

Industrial Shed's previously reviewed range included metric GE-style references alongside imperial bearing configurations.

For accurate replacement, check:

• Inner diameter: the pin or shaft fit.

• Outer diameter: the housing bore.

• Outer-ring width: the available installation space.

• Inner-ring width: the joint's clamping or spacing arrangement.

• Chamfers & shoulders: compatibility with surrounding components.

• Unit system: metric or imperial dimensions.

• Manufacturer tolerances: specified fits.

• Seal & liner construction: technical equivalence.

If you're repairing several types of industrial bearing assemblies, the broader Ball Bearings collection may help identify separate rotating-shaft requirements. A spherical plain bearing should still be selected specifically for its pivoting function.

An incorrect inner-ring width can affect how the joint is clamped, even when the bore & outside diameter match.

Spherical Plain Bearings for Hydraulic Cylinders & Linkages

A hydraulic cylinder pivot must accommodate changing geometry as the machine moves.

That movement can introduce oscillation, radial loading & angular displacement.

Loader arms, agricultural implements & articulated industrial equipment create similar selection challenges.

For these applications, review:

• Radial load magnitude.

• Any axial load component.

• Shock loading.

• Oscillation frequency.

• Permissible angular displacement.

• Pin & housing fit.

• Lubrication access.

• Exposure to contamination.

The bearing's static load rating should not be treated as a complete assessment of the joint's operating duty.

For highly loaded applications, use the equipment manufacturer's requirements & appropriate bearing selection calculations.

Spherical Plain Bearings vs Rod Ends

Both product families can accommodate angular movement, but their mounting arrangements differ.

A spherical plain bearing is generally installed into a compatible housing or pivot assembly.

A rod end combines a bearing interface with a threaded shank or another connection feature.

Rod ends may suit mechanisms designed around threaded linkage connections.

For equipment that uses a track-following roller instead of a spherical joint, compare Cam Followers.

These components serve different mechanical functions & should not be substituted solely because they accommodate some angular movement.

Prevent Premature Wear in Pivot Assemblies

A worn spherical plain bearing may be the symptom rather than the original cause.

Before fitting a replacement, inspect the complete joint.

Look for:

• Worn or scored pivot pins.

• Oval or damaged housing bores.

• Incorrect clearances.

• Excessive misalignment.

• Contamination at the sliding surfaces.

• Inadequate lubrication.

• Shock loading.

• Damaged seals or liners.

If the joint repeatedly develops play or rough movement, investigate the pin, housing & supporting structure.

Replacing the bearing alone may not correct an underlying fitment or alignment problem.

Installation, Lubrication & Maintenance

Cleanliness matters when fitting a sliding-contact bearing.

Inspect the housing, pivot pin & retaining components before installation.

Confirm the required fits & follow the manufacturer's approved fitting method.

Avoid transmitting installation loads through the sliding interface.

Where the bearing requires lubrication, use the specified lubricant & maintenance interval.

For PTFE-lined designs, follow the manufacturer's care instructions rather than applying a general grease schedule.

After installation, verify the joint's movement, clearance & retention before returning equipment to service.

Safety & Care

• Isolate machinery & secure articulated components before servicing.

• Release stored hydraulic or mechanical energy using approved procedures.

• Confirm the complete bearing designation.

• Inspect pivot pins, housings & retaining components.

• Verify radial load, axial load & permitted misalignment.

• Match the specified seal or liner construction.

• Follow approved fitting & lubrication procedures.

• Investigate repeated wear, excessive play or damaged sliding surfaces.

• Seek qualified engineering advice for safety-critical or heavily loaded joints.

Spherical Plain Bearings from IKO & Other Manufacturers

Industrial Shed's previously reviewed assortment included spherical plain bearing references associated with IKO, JAP Bearing & SDTZ.

The collection covers different dimensional series, sealing arrangements & sliding-surface constructions.

For replacement work, use the complete manufacturer's part number as the starting point.

Where an alternative brand is being considered, confirm dimensions, sliding-surface material, load ratings, lubrication requirements & permissible angular movement.

The correct bearing should match the complete joint—not simply the bore diameter.

Spherical Plain Bearings FAQs

What Is a Spherical Plain Bearing Used For?

A spherical plain bearing accommodates specified angular movement & loading through a sliding spherical interface. Applications can include hydraulic cylinder pivots, machinery linkages & articulated joints.

What Is the Difference Between Metal-to-Metal & PTFE-Lined Spherical Bearings?

Metal-to-metal designs commonly require lubrication, while PTFE-lined designs use a low-friction liner with different operating & maintenance requirements.

Are Sealed Spherical Plain Bearings Maintenance-Free?

Not necessarily. Sealing helps manage contamination, but lubrication & maintenance requirements depend on the exact bearing construction.

Can I Replace a Metric Spherical Plain Bearing with an Imperial One?

Only when the complete dimensions, tolerances, construction & operating requirements are compatible. Similar nominal measurements do not guarantee interchangeability.

Industrial Shed Support

Industrial Shed supplies spherical plain bearings & related components to Australian workshops, agricultural maintenance teams & industrial buyers.

Review Shipping & Delivery for delivery arrangements. For replacement-component enquiries, explore Warranty & Parts Support.