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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
11 in stock
Inch tapered roller bearing cone, 3.2813 in bore, 1.0000 in width, Class 3 precision. K factor 1.4, 117,000 N dynamic. Mates the 27620 cup.
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| MFR / Brand | Timken |
|---|---|
| MPN | 27689-3 |
| Model | 27689 3 / #3 |
| Bearing Type | Tapered Roller Bearing Cone |
| ID | 3.2813 in |
| Series | 27600 |
|---|---|
| Harmonization Code | 8482.20.00 |
| Design Units | Imperial |
| Bearing Material | Case-carburized steel |
| Cone Part Number | 27689 |
| Cone Width | 1.0000 in |
| Cone Backface To Clear Radius | 0.03" |
| Base Number | 27689 |
| Overall Width | 1.0000 in |
| Mpn Variants | 27689-3, 27689 *3, 27689 #3, 276893, 27689 |
| Compatible With Replaces | Mates Timken cups 27620 and 27620RB |
| Precision Class | Class 3 |
| Dynamic Load Rating C1 | 117,000 N |
| Dynamic Load Rating | 117,000 N |
| Static Load Rating | 178,000 N |
| Precision Rating | Class 3 |
| Rolling Elements | Tapered Roller |
| Item Weight | 2.99 kg (6.60 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Effective Center Location | 0.02 in |
| Cross Reference 1 | SKF 27689 – standard tolerance, not Class 3 |
|---|---|
| Cross Reference 2 | FAG K27689 – standard tolerance, not Class 3 |
| Cross Reference 3 | NSK 27689 – standard tolerance, not Class 3 |
| Cross Reference 4 | NTN 4T-27689 – standard tolerance, not Class 3 |
| Cross Reference 5 | Koyo 27689 – standard tolerance, not Class 3 |
| Cross Reference 6 | Fersa 27689 – standard tolerance, not Class 3 |
| Cross Reference 7 | BCA / Bower 27689 – standard tolerance, not Class 3 |
| Cross Reference 8 | PEER 27689 – standard tolerance, not Class 3 |
Timken 27689-3 inch tapered roller bearing cone — the inner ring complete with its tapered roller set and cage. Bore Diameter: 3.2813 in (83.345 mm). Overall Width: 1.0000 in (25.400 mm), the inner ring width B. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Case-carburized steel. Item Weight: 2.99 kg (6.60 lb). Series: 27600. Design units are imperial. Cone only. The matching cups are the Timken 27620 and the snap-ring-located 27620RB.
27689 — the cone number in Timken’s 27600 inch series. Bore 3.2813 in.
-3, also written *3 or #3 — Precision Class: Class 3. A tighter tolerance than standard, giving lower running vibration and closer shaft location.
Dynamic Load Rating: 117,000 N (26,300 lbf) at one million revolutions. Static Load Rating: 178,000 N (39,900 lbf). Timken’s 90-million-revolution figures are C90 30,400 N (6,830 lbf) radial and Ca90 21,600 N (4,860 lbf) thrust.
K Factor: 1.4. The K factor is the ratio between radial and thrust capability; 1.4 is a moderate taper that balances the two.
G1 Factor: 98.2. G2 Factor: 41.8. Geometry Factor (Cg): 0.120.
Effective Center Location: 0.02 in (0.5 mm). Max Shaft Fillet Radius: 0.030 in (0.8 mm), the largest shaft corner radius the cone bore chamfer will clear. Shaft Backing Shoulder Diameter, frontface (da): 3.54 in (90 mm). Shaft Backing Shoulder Diameter, backface (db): 3.54 in (90 mm). Cage Location relative to backface (Aa): 0.05 in (1.3 mm). Cage Location relative to frontface (Ab): 0.09 in (2.3 mm).
Unit Quantity: 1 Pc — one 27689-3 cone. The mating cups are the Timken 27620 and 27620RB.
27689 is an industry-standard inch cone number made across the general taper makers: SKF, FAG, NSK, NTN, Koyo, Fersa, BCA and PEER build it to the same boundary dimensions and rating class. Those are standard-tolerance cones; the -3 here is a Class 3 execution, a tighter grade than the plain number.
Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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