1. What Is an SKF to Timken Bearing Cross Reference?
An SKF–Timken cross reference identifies which Timken bearing corresponds to an SKF bearing based on:
- ISO dimensions
- Bearing type
- Load ratings
- Internal clearance
- Sealing configuration
Cross reference is essential when:
- Replacing SKF bearings with Timken alternatives
- Consolidating suppliers
- Reducing maintenance costs
- Finding replacements for discontinued SKF models
Both SKF and Timken follow international standards, but each has its own cage designs, heat treatments, and suffix codes. This guide helps you cross-reference correctly.
2. How SKF → Timken Cross Reference Works
2.1 ISO-Dimension Equivalence
Both brands follow ISO 15 (ball bearings) and ISO 355 (tapered & roller bearings).
If two bearings share the same:
- Bore diameter (d)
- Outer diameter (D)
- Width (B)
- Bearing type
they are dimensionally interchangeable.
Examples:
- SKF 6204 → Timken 6204-ZZ / 6204-2RS
- SKF 30206 J2/Q → Timken 30206
- SKF 22210 EK → Timken 22210KEJ
2.2 Internal Differences to Consider
Even when dimensions match, brands differ in:
- Cage design
- Steel grade and heat treatment
- Grease fill
- Precision grade
- Internal geometry
- Rolling element quantity
That’s why “cross reference” means compatible — not identical.
2.3 Equivalent Suffixes (SKF → Timken)
| SKF Suffix | Timken Equivalent | Meaning |
|---|---|---|
| 2Z / ZZ | ZZ | Double metal shields |
| RS / 2RS1 | RS / 2RS | Rubber seals |
| C3 | C3 | Increased clearance |
| C4 | C4 | Extra clearance |
| K | K | Tapered bore |
| E / E1 | E | Reinforced load design |
Match both basic number + suffix for best performance.
3. SKF to Timken Bearing Cross Reference Chart
3.1 Deep Groove Ball Bearings (6000 / 6200 / 6300 Series)
| SKF | Timken Equivalent | Notes |
|---|---|---|
| 6000 | 6000 | Standard DGBB |
| 6001-2Z | 6001-ZZ | Double metal shields |
| 6002-2RS1 | 6002-2RS | Rubber seals |
| 6203 | 6203 | Common motor bearing |
| 6203-2Z | 6203-ZZ | Shielded |
| 6204-2RS1 | 6204-2RS | Rubber-sealed |
| 6305 C3 | 6305-C3 | Increased clearance |
3.2 Tapered Roller Bearings
| SKF | Timken Equivalent | Notes |
|---|---|---|
| 30203 | 30203 | Metric TRB |
| 30206 J2/Q | 30206 | Most common replacement |
| 32005 X | 32005X | Internal geometry “X” type |
| 32010 X/Q | 32010X | Automotive hubs |
| 32210 J2/Q | 32210 | Heavy industrial use |
| LM11949/910 | LM11949/LM11910 | Inch-series TRB |
3.3 Spherical Roller Bearings
| SKF | Timken Equivalent | Notes |
|---|---|---|
| 22208 E | 22208EJ | High load design |
| 22210 EK | 22210KEJ | Tapered bore |
| 22312 E | 22312EM | Brass cage optional |
| 23120 CCK/W33 | 23120KEJW33 | W33 lubrication groove |
3.4 Cylindrical Roller Bearings
| SKF | Timken Equivalent | Notes |
|---|---|---|
| NU205 ECP | NU205E | Polyamide cage |
| NU306 ECM | NU306EM | Brass cage |
| NUP210 ECJ | NUP210E | Single-row NRB |
4. How to Select the Correct Timken Replacement
4.1 Match the Basic Parameters
Always verify:
- Bearing type
- Bore diameter
- Outer diameter
- Width
- ISO series
These ensure mechanical compatibility.
4.2 Match Internal Clearance
Clearance matters—especially for:
- Electric motors
- High-speed applications
- High-temperature environments
- SKF C3 → Timken C3
- SKF C4 → Timken C4
4.3 Match Seal or Shield Type
- SKF 2RS1 → Timken 2RS
- SKF 2Z / ZZ → Timken ZZ
4.4 Consider Load Requirements
For heavy-duty applications, choose:
- Timken EM / EJ reinforced designs
- Brass cage versions
- Case-carburized bearings for shock loads
5. When Cross Reference Is Not Fully Compatible
Be cautious when replacing SKF with Timken in:
❌ High-precision spindle bearings (P4 / P2 / ABEC-7+)
❌ Special OEM internal designs
❌ Pre-greased high-speed bearings
❌ Special angular contact configurations
In these cases, consult technical engineering support.
6. Why Many Buyers Replace SKF with Timken
✔ Strong global availability
✔ Superior tapered & spherical roller bearing expertise
✔ Competitive pricing
✔ Excellent durability under heavy loads
✔ Good compatibility across industrial sectors
Common industries using Timken instead of SKF:
- Mining and aggregate
- Steel & metallurgy
- Automotive
- Agriculture
- Industrial gearboxes
- Paper mills and power plants