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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:
1 in stock
Flanged inch tapered roller bearing cup, 6.1875 in outside diameter, 1.0313 in width, Class 3. Runs against a 52375, 52393 or 52400 cone.
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| MFR / Brand | Timken |
|---|---|
| MPN | 52618B-3 |
| Model | 52618 B #3 |
| Bearing Type | Tapered Roller Bearing Cup |
| OD | 6.1875 in (157.163 mm) |
| Width | 1.0625 in |
| Material | Bearing Steel |
|---|---|
| Series | 526 |
| Base Number | 52618B |
| Overall Width | 1.0313 in (26.195 mm) |
| Mpn Variants | 52618B-3; 52618-B *3; 52618B #3; 52618B3; 52618-B-3 |
| Compatible With Replaces | Mating cones: Timken 52375, Timken 52393, Timken 52400 |
| Precision Class | Class 3 |
| Additional Attributes | e Factor 0.47; K Factor 1.23; Y Factor 1.26; G1 1060; G2 350; Cg 0.152; Flange OD (D1) 163.513 mm; Flange width (C2) 6.35 mm; Max housing fillet radius 3.30 mm; Da 154.94 mm |
| Rolling Elements | Tapered Roller |
| Item Weight | 2.5 kg (5.6 lb) |
| Number Of Rows | 1 |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.20.00.00 |
| Part Number | 52618B-3 |
| Cross Reference 1 | Timken 52618 – related size, unflanged cup, same 6.1875 in outside diameter and raceway |
|---|
Timken 52618B-3 flanged inch tapered roller bearing cup. Bearing Type: Tapered roller bearing cup with an integral outer-ring flange. Series: 526. Base Number: 52618B. Outside Diameter: 6.1875 in (157.163 mm). Overall Width: 1.0313 in (26.195 mm). Outer Ring Flange Outside Diameter (D1): 6.4375 in (163.513 mm). Outer Ring Flange Width (C2): 0.25 in (6.35 mm). Rolling Elements: Tapered Roller. Number Of Rows: 1. Item Weight: 2.5 kg (5.6 lb).
52618 — Timken base cup number in the 526 inch series, 6.1875 in outside diameter.
B — flanged execution. The flange raises the outside diameter to 6.4375 in over a 0.25 in band at one end, so the cup seats on the face of a through-bored housing instead of 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. The same class is written 52618B-3, 52618B *3 and 52618B #3.
e Factor: 0.47. K Factor: 1.23. Y Factor: 1.26. G1 Factor: 1060. G2 Factor: 350. Geometry Factor (Cg): 0.152. A K of 1.23 is a medium roller angle, so the cup carries a useful thrust share alongside its radial load.
Maximum fillet radius on the mating housing: 3.30 mm (0.130 in). Housing Backing Shoulder Diameter, frontface (Da): 154.94 mm (6.14 in). The flange face sets axial position, so the housing bore can run straight through.
Unit Quantity: 1 Pc. Cup only. Matching cones are the Timken 52375, 52393 and 52400.
The flanged 52618B is a Timken execution. The plain 52618 cup shares the 6.1875 in outside diameter and raceway and is built by several makers, 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 6.1875 in seat, Timken is the source.
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