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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
Class 3 tapered roller bearing cone, 1.4375 in (36.513 mm) bore, 1.1250 in cone width, 94,700 N C1 dynamic rating. Mates with Timken 31520 or 31521 cups.
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| MFR / Brand | Timken |
|---|---|
| MPN | 31597-3 |
| Model | 31597 #3 |
| Bearing Type | Tapered Roller Bearing Cone, Open |
| ID | 1.4375 in (36.513 mm) |
| Width | 1.1250 in (28.575 mm) |
| Series | 31500 |
|---|---|
| Base Number | 31597 |
| Industry Terms | tapered roller bearing cone, TRB cone, cone assembly, inner ring and roller assembly |
| Mpn Variants | 31597-3, 31597 *3, 31597 #3, 315973 |
| Precision Class | Class 3 |
| Dynamic Axial Rating Ca90 | 16,900 N |
| K Factor | 1.45 |
| Additional Attributes | Cone only; matching cups Timken 31520 or 31521; Timken 31597/31520 single-row TS assembly. Source: cad.timken.com item pages 31597 and 31597-31520. |
| Dynamic Load Rating | 94,700 N (C1, 1 million revolutions) |
| Static Load Rating | 107,000 N |
| Rolling Elements | Tapered Roller |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Design Units | Inch |
| Bearing Class | Class 3 |
| Cone Part Number | 31597 |
| Cone Width | 1.1250 in (28.575 mm) |
| Effective Center Location | -0.3 in (-7.6 mm) |
| Common Misspellings | Timkin 31597-3; Timken 31597 3; Timken 31597*3; Timken 315973; Timkin 31597 #3 |
| Application Types | industrial gearboxes; automotive and truck axles; agricultural machinery; conveyors; general industrial shafts under combined radial and axial load |
| Cross Reference 1 | Timken 31597 (standard precision) |
|---|---|
| Cross Reference 2 | NTN 31597 (standard precision) |
Timken 31597-3 is a single tapered roller bearing cone: the inner ring with its tapered rollers and cage. Cone only. Matching Cup: Timken 31520 or 31521. Bore Diameter: 1.4375 in (36.513 mm). Cone Width: 1.1250 in (28.575 mm). Precision Class: Class 3. Unit Quantity: 1 Pc.
31597 — Timken inch cone number in the 31500 series, 1-7/16 in bore.
-3 — Timken Class 3 precision: tighter tolerance and lower running vibration.
Dynamic Load Rating: 94,700 N (C1, 1 million revolutions). Dynamic Load Rating (C90): 24,600 N (90 million revolutions). Dynamic Axial Rating (Ca90): 16,900 N. Static Load Rating: 107,000 N. K Factor: 1.45. G1 Factor: 26.3. G2 Factor: 9.08. Geometry Factor (Cg): 0.0773. Rolling Elements: Tapered Roller. Number Of Rows: 1. Design Units: Inch.
Effective Center Location: -0.3 in (-7.6 mm). Max Shaft Fillet Radius: 0.140 in (3.600 mm). Shaft Backing Shoulder Diameter Frontface: 1.75 in (44.5 mm). Shaft Backing Shoulder Diameter Backface: 2.01 in (51 mm). Cage Location Relative To Backface: 0.04 in (1 mm). Cage Location Relative To Frontface: 0.08 in (2 mm).
Matching cups: Timken 31520 and Timken 31521. Assembly Designation: Timken 31597/31520, a single-row TS bearing with Assembly Outside Diameter: 3.0000 in (76.200 mm) and Assembly Width: 1.1563 in (29.370 mm). Cross-references: Timken 31597 (standard precision), NTN 31597 (standard precision). Part number variants: 31597-3, 31597 *3, 31597 #3, 315973. CAD model and data sheet: available from Timken (cad.timken.com).
Timken 31520 or Timken 31521.
1.4375 in (36.513 mm) bore and 1.1250 in (28.575 mm) cone width.
Timken Class 3 precision: tighter tolerance and lower running vibration.
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