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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Inch tapered roller bearing cone, 3.9375 in bore, 1.4219 in width, Class 3 precision, 223,000 N dynamic rating. Mates with a 52618 cup.
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| MFR / Brand | Timken |
|---|---|
| MPN | 52393-3 |
| Model | 52393 #3 |
| Bearing Type | Tapered Roller Bearing Cone |
| ID | 3.9375 in (100.013 mm) |
| Series | 523 |
|---|---|
| Base Number | 52393 |
| Overall Width | 1.4219 in (36.116 mm) |
| Mpn Variants | 52393-3; 52393 *3; 52393 #3; 523933; 52393 |
| Compatible With Replaces | Mating cups: Timken 52618, Timken 52618P |
| Precision Class | Class 3 |
| Additional Attributes | K Factor 1.23; C90 57,900 N; Ca90 47,100 N; Effective Load Centre -0.5 mm; Max shaft fillet radius 3.600 mm; da 109 mm; db 116 mm; Aa 4.1 mm; Ab 3 mm; G1 175.4; G2 41.7; Cg 0.152 |
| Dynamic Load Rating | 223,000 N |
| Static Load Rating | 343,000 N |
| Rolling Elements | Tapered Roller |
| Item Weight | 7.166 kg (15.80 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Harmonization Code | 8482.20.00 |
| Part Number | 52393-3 |
| Cone Part Number | 52393 |
| Cone Width | 1.4219 in |
| Cone Backface To Clear Radius | 0.14 in |
| Cross Reference 1 | Koyo 52393 |
|---|---|
| Cross Reference 2 | NTN 4T-52393 |
| Cross Reference 3 | NSK 52393 |
| Cross Reference 4 | SKF 52393 |
| Cross Reference 5 | BCA / Bower 52393 |
Timken 52393-3 inch tapered roller bearing cone. Bearing Type: Tapered roller bearing cone — the inner ring carrying the tapered rollers and cage as one assembly. Series: 523. Base Number: 52393. Bore Diameter: 3.9375 in (100.013 mm). Overall Width: 1.4219 in (36.116 mm). Bore Type: Straight. Rolling Elements: Tapered Roller. Number Of Rows: 1. Item Weight: 7.166 kg (15.80 lb).
52393 — Timken base cone number in the 523 inch series, 3.9375 in bore.
*3 — Timken Precision Class 3. Tighter running and mounting tolerance than standard class, giving lower running vibration and closer shaft location. The same class is written 52393-3, 52393 *3 and 52393 #3.
Dynamic Load Rating: 223,000 N (C1, one million revolutions). Static Load Rating: 343,000 N. Dynamic radial rating at 90 million revolutions (C90): 57,900 N. Dynamic axial rating at 90 million revolutions (Ca90): 47,100 N. K Factor: 1.23. A K factor near 1.2 puts the roller angle in the medium range, so the cone carries heavy radial load while still taking a useful thrust component in an opposed pair. The 52393 shares the 52375’s roller set and ratings on a larger bore.
Effective Load Centre: -0.5 mm. Maximum fillet radius on the mating shaft: 3.600 mm (0.140 in). Shaft Backing Shoulder Diameter, frontface (da): 109 mm (4.29 in). Shaft Backing Shoulder Diameter, backface (db): 116 mm (4.57 in). Cage location relative to backface (Aa): 4.1 mm. Cage location relative to frontface (Ab): 3 mm. G1 Factor: 175.4. G2 Factor: 41.7. Geometry Factor (Cg): 0.152.
Unit Quantity: 1 Pc. Cone only. The matching cups are the Timken 52618 and 52618P.
52393 is an industry-standard inch tapered roller bearing cone number. Koyo, NTN, NSK, SKF and BCA/Bower all build a 52393 to the same boundary dimensions, and all interchange with this cone. Precision Class 3 is a Timken tolerance grade; a standard-class 52393 from any maker fits the same envelope but holds a wider tolerance band.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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