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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
4 in stock
Flanged inch tapered roller bearing cup, 3.0625 in outside diameter, 0.375 in width, Class 3. Light-section L series with a through-bore flange face.
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| MFR / Brand | Timken |
|---|---|
| MPN | LL205410B-3 |
| Model | LL 205410 B #3 |
| Bearing Type | Tapered Roller Bearing Cone |
| OD | 3.0625 in (77.788 mm) |
| Series | LL205 |
|---|---|
| Base Number | LL205410B |
| Overall Width | 0.375 in (9.525 mm) |
| Mpn Variants | LL205410B-3; LL-205410-B *3; LL205410B #3; LL205410B3; LL 205410 B |
| Precision Class | Class 3 |
| Additional Attributes | e Factor 0.34; K Factor 1.74; Y Factor 1.78; Cg 0.0699; Flange OD (D1) 80.582 mm; Flange width (C2) 2.794 mm; Max housing fillet radius 1.5 mm; Da 74.93 mm |
| Rolling Elements | Tapered Roller |
| Item Weight | 0.2 kg (0.5 lb) |
| Number Of Rows | 1 |
| Harmonization Code | 8482.20.00 |
| Cup Part Number | LL205410B |
| Cup Width | 0.3750 in |
| Part Number | LL205410B-3 |
| Cross Reference 1 | Timken LL205410 - unflanged cup, no flange seat |
|---|
Timken LL205410B-3 flanged inch tapered roller bearing cup. Bearing Type: Tapered roller bearing cup with an integral outer-ring flange. Series: LL205. Base Number: LL205410B. Outside Diameter: 3.0625 in (77.788 mm). Overall Width: 0.375 in (9.525 mm). Outer Ring Flange Outside Diameter (D1): 3.1725 in (80.582 mm). Outer Ring Flange Width (C2): 0.1100 in (2.794 mm). Rolling Elements: Tapered Roller. Number Of Rows: 1. Item Weight: 0.2 kg (0.5 lb).
LL — Timken extra-light section inch series prefix. The LL families run the shallowest ring section of the L range, which is what gives this cup a 0.375 in width on a 3.0625 in outside diameter.
205410 — cup number within that series.
B — flanged execution. The flange lifts the outside diameter to 3.1725 in over a 0.1100 in band at one end, so the cup seats on the face of a through-bored housing rather than on an internal shoulder.
*3 — Timken Precision Class 3. Tighter running and mounting tolerance than standard class, giving lower running vibration and closer location in the housing bore.
e Factor: 0.34. K Factor: 1.74. Y Factor: 1.78. Geometry Factor (Cg): 0.0699. A K of 1.74 on an extra-light section puts this cup firmly on the radial side: it suits a shallow housing where space, not thrust capacity, sets the design.
Maximum fillet radius on the mating housing: 1.5 mm (0.06 in). Housing Backing Shoulder Diameter, frontface (Da): 74.93 mm (2.99 in). The flange face sets axial position, so the housing bore can run straight through.
Unit Quantity: 1 Pc. Cup only.
The flanged LL205410B is a Timken execution. The plain LL205410 cup shares the 3.0625 in outside diameter and raceway, but it locates on a housing shoulder rather than on a flange face, so it is a related size rather than a drop-in interchange for a flanged seat. For a flanged 3.0625 in seat, Timken is the source.
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