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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
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Fafnir W309KLL wide inner ring ball bearing, 45 x 100 x 39.67 mm, land-riding contact seals both sides, CN clearance, ABEC 1 / P0, straight bore.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | W309KLL |
| Model | W 309K LL |
| Bearing Type | Ball Bearing, Contact seals both sides |
| ID | 45 mm |
| OD | 100 mm |
| Width | 39.67 mm |
| Series | 300 |
|---|---|
| Lubricant | Grease |
| Material | Chrome steel |
| Base Number | W309 |
| Common Misspellings | Fafner W309KLL; Faffnir W309KLL; W309KL; W309LL; W 309 K L L |
| Overall Width | 39.67 mm |
| Mpn Variants | W309KLL; W 309 KLL; W309-KLL; W 309K LL; 309KLL; W309 KLL; 2419885 |
| Precision Class | ABEC 1 / P0 |
| Dynamic Load Rating C1 | 58,700 N |
| Additional Attributes | Wide inner ring execution; maximum shaft fillet radius 1.5 mm (0.059 in); Fafnir factory part reference 2419885 |
| Dynamic Load Rating | 58,700 N |
| Static Load Rating | 31,600 N |
| Precision Rating | ABEC 1 / P0 |
| Rolling Elements | Ball |
| Item Weight | 1.29 kg (2.84 lb) |
| Limiting Speed | 4,830 rpm grease; 5,520 rpm oil |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Internal Clearance | CN |
| Harmonization Code | 8482.10.50 |
| Design Units | Metric |
| Bearing Material | Chrome steel |
| Industry Terms | Wide inner ring ball bearing; sealed deep groove ball bearing; extended inner ring bearing; W-series bearing |
| Application Types | General industrial shafts; agricultural and industrial machinery; shafts needing a longer inner ring seat |
| Cross Reference 1 | Fafnir W309PP - different seal type |
|---|---|
| Cross Reference 2 | Fafnir W309KDD - shields instead of contact seals |
| Cross Reference 3 | Fafnir W309K - open, no seals |
| Cross Reference 4 | SKF 6309-2RS1 - 25 mm width vs 39.67 mm |
| Cross Reference 5 | FAG 6309-2RSR - 25 mm width vs 39.67 mm |
| Cross Reference 6 | NSK 6309DDU - 25 mm width vs 39.67 mm |
| Cross Reference 7 | NTN 6309LLU - 25 mm width vs 39.67 mm |
| Cross Reference 8 | Koyo 6309-2RS - 25 mm width vs 39.67 mm |
| Cross Reference 9 | MRC 309SZZ - 25 mm width vs 39.67 mm |
Fafnir W309KLL wide inner ring ball bearing, built by The Timken Company. Single-row, 45 mm bore, 100 mm outside diameter, 39.67 mm (1.562 in) overall width, land-riding contact seals both sides, grease lubricated. Unit Quantity: 1 Pc. One complete sealed bearing.
W — wide inner ring execution. Overall width is 39.67 mm against the 25 mm of a standard 6309.
309 — 300 medium series, bore code 09, 45 mm bore in a 100 mm outside diameter.
KLL — land-riding contact seals both sides. Each seal lip runs on a machined land of the inner ring.
Bore Diameter: 45 mm. Outside Diameter: 100 mm. Overall Width: 39.67 mm (1.562 in). Series: 300. Base Number: W309. Number Of Rows: 1. Rolling Elements: Ball. Bearing Material: Chrome steel. Bore Type: Straight. Closure Type: Contact seals both sides. Lubricant: Grease. Dynamic Load Rating: 58,700 N. Static Load Rating: 31,600 N. Limiting Speed: 4,830 rpm grease; 5,520 rpm oil. Precision Class: ABEC 1 / P0. Internal Clearance: CN. Item Weight: 1.29 kg (2.84 lb). Country of Origin: United States.
Envelope: 45 x 100 x 39.67 mm. Straight cylindrical bore. Maximum shaft fillet radius: 1.5 mm (0.059 in).
Cross-Reference 1: Fafnir W309PP – different seal type. Cross-Reference 2: Fafnir W309KDD – shields instead of contact seals. Cross-Reference 3: Fafnir W309K – open, no seals. Cross-Reference 4: SKF 6309-2RS1 – 25 mm width vs 39.67 mm. Cross-Reference 5: FAG 6309-2RSR – 25 mm width vs 39.67 mm. Cross-Reference 6: NSK 6309DDU – 25 mm width vs 39.67 mm. Cross-Reference 7: NTN 6309LLU – 25 mm width vs 39.67 mm. Cross-Reference 8: Koyo 6309-2RS – 25 mm width vs 39.67 mm. Cross-Reference 9: MRC 309SZZ – 25 mm width vs 39.67 mm. MPN Variants: W309KLL, W 309 KLL, W309-KLL, W 309K LL, 309KLL, W309 KLL, 2419885.
45 mm bore, 100 mm outside diameter, 39.67 mm overall width.
Land-riding contact seals on both sides.
Dynamic Load Rating: 58,700 N. Static Load Rating: 31,600 N.
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