Timken spherical plain bearings are used in static, oscillating, and low-speed articulation applications. Unlike rolling bearings, they do not use balls or rollers as rolling elements. Their design includes a spherical inner ring and a matching outer ring surface.
For B2B buyers, the main task is to confirm the correct series, inch or metric size, seal design, and interchange reference before ordering. A similar-looking plain bearing may not be suitable if the width, contact surface, seal type, or load direction is different.
Timken spherical plain bearings include several inch and metric series. Buyers should first identify the bearing type, then check dimensions and sealing requirements.
Common inch-type series include SF, SFH, SBB, and SBT.
SF is a radial inch spherical plain bearing with a single-fractured outer ring. SFH is similar but has a wide inner ring. SBB uses a double-fractured outer ring. SBT is an angular contact spherical plain bearing type.
These series are not interchangeable only by appearance. Buyers should confirm bore size, outside diameter, width, and whether the bearing supports radial or angular-contact loading.
Metric series may include FS and FSH types. FS is a metric radial spherical plain bearing, while FSH has a wide inner ring.
Metric and inch series should not be mixed without checking exact dimensions.
Some spherical plain bearing references include seal designators such as TT or SS. Seal design affects contamination protection and suitability for the working environment.
Timken spherical plain bearing codes may include bore indication, bearing type, size code, and seal designator.
| Code | Code section | Meaning |
| 10 | Bore / size indication | Inch-series size indication, commonly related to 1.00 in. nominal bore |
| SF | Bearing type | Radial inch spherical plain bearing, single-fractured outer ring |
| 16 | Additional size code | Helps identify the matching size within the series |
| TT | Seal designator | Reinforced rubber seals |
This example shows why letters matter. 10SF16 and 10SF16TT are not the same request if the sealed version is required.
| Code | Code section | Meaning |
| 100 | Bore size | Metric bore size, 100 mm |
| FS | Bearing type | Radial metric spherical plain bearing |
| 150 | Outside diameter size | Metric outside diameter, 150 mm |
For metric spherical plain bearings, the numbers may directly indicate bore and outside diameter. Buyers should still confirm width, seal design, and load conditions.
Interchange references are useful for starting a search, but they should not be treated as automatic replacement approval.
For example, a Timken reference such as 10SF16TT may be compared with references such as GEZ100ES-2RS or B16LSS during initial cross-reference checking. However, the buyer must still confirm bore, outside diameter, width, seal design, radial or angular contact type, and operating conditions.
A safe interchange process should include:
No cross-reference should be used as a guaranteed replacement without technical confirmation.
Timken spherical plain bearings are used in equipment where low-speed oscillation, articulation, static load, or moderate misalignment exists.
Typical applications include construction machinery, mining equipment, hydraulic cylinders, actuators, linkages, steering mechanisms, drawbridges, dam equipment, and other heavy articulation points. In these positions, the bearing may support radial load, axial load, shock load, or repeated oscillating motion.
Buyers should check whether the bearing is used in a slow-moving joint, a static pivot, an actuator connection, or an angular-contact position. This helps confirm the correct series and design.
Before sending an inquiry, buyers should prepare exact model and application information.
| Confirmation item | Why it matters |
| Complete model number | Confirms series and seal design |
| Inch or metric series | Prevents size mismatch |
| Bore, OD and width | Confirms dimensional fit |
| Radial or angular contact type | Matches load direction |
| Seal design | Affects contamination protection |
| Application motion | Static, oscillating or articulating |
Buyers should also provide photos, drawings, quantity, lubrication condition, load direction, and working environment.
HSN Bearing Group supports overseas buyers with spherical plain bearing model confirmation, interchange discussion, sourcing, and inspection before shipment.
When customers provide a Timken, SKF, RBC, or other reference, HSN can help compare the series, dimensions, seal design, and application requirements. For old or difficult-to-source models, HSN can discuss a replacement option after checking technical details.
Do spherical plain bearings contain rolling elements?
No. They use sliding contact between a spherical inner ring and a matching outer ring surface.
What is the difference between SF and SFH?
Both are inch radial spherical plain bearing series, but SFH has a wide inner ring.
Does TT mean the bearing is sealed?
Yes, TT is used as a seal designator for reinforced rubber seals.
Does an interchange reference guarantee replacement?
No. Dimensions, structure, seal, and working conditions must be confirmed.
For detailed Timken spherical plain bearing models not listed above, please contact HSN for model confirmation and interchange discussion. When checking spherical plain bearing references, you can also send the complete model number, photos, dimensions, quantity, and working conditions for review.
This article is based on independent analysis of publicly available technical information and industry understanding for knowledge sharing. All brand names and trademarks mentioned belong to their respective owners. HSN Bearing Group is an independent bearing supplier and technical service provider.
Tel: 86.156.6578.7336 Email: service@hsnindustrial.com Website: www.rollingparts.com www.hsnbearings.com