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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
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Tapered roller bearing cone and cup set, 1.5000 in (38.1 mm) bore, 3.0000 in (76.2 mm) OD, Class 3 precision, 63,500 N C1. Timken 28151-3/28300-3.
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| MFR / Brand | Timken |
|---|---|
| MPN | 28151-3/28300-3 |
| Model | 28151 *3 / 28300 *3 |
| Bearing Type | Tapered Roller Bearing Cone, Open |
| ID | 1.5000 in (38.100 mm) |
| OD | 3.0000 in (76.200 mm) |
| Width | 0.8125 in |
| Material | Bearing Steel |
|---|---|
| Series | 28000 |
| Mpn Variants | 28151-3/28300-3, 28151/28300 *3, 28151/28300#3 |
| Precision Class | Class 3 |
| Dynamic Load Rating | 63,500 N |
| Static Load Rating | 68,900 N |
| Rolling Elements | Tapered Roller |
| Item Weight | 0.4 kg (0.9 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.20.00.00 |
| Cup Width | 0.6105 in (15.507 mm) |
| Cone Width | 0.8244 in (20.940 mm) |
| Effective Center Location | -0.19 in (-4.8 mm) |
| Cross Reference 1 | SKF 28151/28300 |
|---|---|
| Cross Reference 2 | NTN 4T-28151/28300 |
| Cross Reference 3 | Koyo 28151/28300 |
Timken 28151-3/28300-3 is a single-row tapered roller bearing made to precision Class 3: one 28151 cone and one 28300 cup. Bore Diameter: 1.5000 in (38.100 mm). Outside Diameter: 3.0000 in (76.200 mm). Overall Width: 0.8125 in (20.638 mm). Cone Width: 0.8244 in (20.940 mm). Cup Width: 0.6105 in (15.507 mm). Item Weight: 0.4 kg (0.9 lb). Precision Class: Class 3. Rolling Elements: Tapered Roller.
28151 — Timken inch-series cone in the 28100 series, 1.5000 in bore.
28300 — the matching single cup, 3.0000 in OD.
-3 — Class 3 precision: tighter bore, OD, width and runout tolerances than standard Class 2 for smoother, lower-vibration running.
Dynamic Load Rating: 63,500 N (14,300 lbf), Timken C1 at 1 million revolutions. Dynamic Radial Rating C90: 16,500 N (3,700 lbf). Dynamic Axial Rating Ca90: 11,300 N (2,550 lbf). Static Load Rating: 68,900 N (15,500 lbf). e Factor: 0.4. K Factor: 1.45. Y Factor: 1.49.
Effective Center Location: -0.19 in (-4.8 mm). Max Shaft Fillet Radius: 0.140 in (3.600 mm). Max Housing Fillet Radius: 0.050 in (1.27 mm). Shaft Backing Shoulder Diameter, Frontface (da): 1.71 in (43.5 mm). Shaft Backing Shoulder Diameter, Backface (db): 1.97 in (50 mm). Housing Backing Shoulder Diameter, Frontface (Da): 2.83 in (71.88 mm). Housing Backing Shoulder Diameter, Backface (Db): 2.68 in (68.07 mm).
Unit Quantity: 2 Pcs, one cone and one cup forming one complete single-row bearing.
28151/28300 is an ABMA standard inch set also produced by SKF, NTN (4T-28151/28300), Koyo and Bower; Class 3 is a Timken precision grade on the same envelope.
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