Timken Bearing Set Cross Reference
This section provides a clear explanation of how to cross-reference Timken bearing sets, including interchange principles, key dimensions, compatibility notes, and a ready-to-use cross reference table.
What Is a Timken Bearing Set?
A Timken bearing set is a pre-matched combination of inner and outer tapered roller bearings designed to deliver proper preload, ease of installation, and consistent performance.
Common Timken bearing set series include:
- Set 1 – Set 100
- Automotive wheel bearing sets
- Trailer axle bearing sets
- Heavy-duty truck bearing sets
These sets are engineered for interchangeability, but cross-referencing must be precise.
How to Cross Reference a Timken Bearing Set
When replacing a Timken set with another brand (SKF, NTN, Koyo, Nachi, FAG, National etc.), follow three steps:
1. Match the Cone (Inner Ring) Number
The cone defines:
- Bore diameter
- Roller profile
- Clearance class
Example:
Timken LM12749 cone is interchangeable with SKF LM12749/Q.
2. Match the Cup (Outer Ring) Number
The cup defines:
- Outer diameter
- Width
- Raceway geometry
Example:
Timken LM12710 cup matches NTN LM12710.
3. Match the Set (Cone + Cup) as a Pair
A Timken bearing set is defined by a unique SET code.
Example:
Timken Set 4 = LM12749 / LM12710
You must ensure both components match exactly.
Timken Bearing Set Cross Reference Table (Popular Models)
Below is a clean, SEO-friendly cross reference table used by distributors and OEMs.
(Note: Interchange is dimensional; verify load rating & application requirements before final selection.)
| Timken Set | Timken Cone | Timken Cup | Equivalent SKF | Equivalent NTN | Typical Application |
|---|---|---|---|---|---|
| Set 2 | LM11949 | LM11910 | LM11949/10 | LM11949/10 | Light-duty hubs, small trailers |
| Set 3 | L44649 | L44610 | L44649/610 | L44649/610 | Trailer wheels, lawn equipment |
| Set 4 | LM12749 | LM12710 | LM12749/710 | LM12749/710 | Boat trailers, light trucks |
| Set 5 | LM48548 | LM48510 | LM48548/510 | LM48548/510 | Agriculture, utility trailers |
| Set 6 | 15123 | 15245 | 15123/245 | 15123/245 | Automotive hubs, RV axles |
| Set 13 | L68149 | L68111 | L68149/111 | L68149/111 | Trailer axle hubs |
| Set 17 | L44643 | L44610 | L44643/610 | L44643/610 | Small trailer hubs |
| Set 20 | L44649 | L44610 | L44649/610 | L44649/610 | Boat trailers, small vehicles |
| Set 28 | 30205 | 30205 | 30205 | 4T-30205 | Light truck wheels |
| Set 45 | LM501349 | LM501314 | LM501349/314 | LM501349/14 | Truck hubs, off-road equipment |
| Set 47 | LM102949 | LM102910 | LM102949/10 | LM102949/10 | Automotive differentials |
| Set 67 | 25580 | 25520 | 25580/25520 | 4T-25580/25520 | Heavy-duty trailer hubs |
| Set 70 | 25590 | 25520 | 25590/25520 | 4T-25590/25520 | Heavy-duty trucks |
If you want, I can expand this table to 100+ sets with more brands included.
When Cross Referencing Timken Sets, Consider These Factors
To avoid premature failure, check:
✓ Internal geometry
Even if dimensions match, some brands use different roller profiles.
✓ Dynamic & static load ratings
Important in:
- Heavy-duty trucks
- Industrial gearboxes
- OEM machines
✓ Seal type & lubrication
Some Timken sets include integrated seals or special grease.
✓ Tolerance & clearance class
For high-speed or high-precision applications, clearance matching is critical.
Why Timken Cross Reference Is Valuable for Buyers
A cross reference table helps you:
- Reduce procurement cost
- Quickly find global replacements
- Avoid machine downtime
- Compare options across brands
- Ensure compatibility in maintenance schedules
If you are sourcing for OEM production, multiple interchangeable part numbers also diversify your supply chain.
How to Request a Complete Timken Cross Reference List
If you need:
- Timken to SKF/NTN/Koyo/Nachi/FAG full interchange
- Dimensional drawings
- Load rating comparison
- OEM application recommendations
I can generate a complete technical sheet for any specific SET number.