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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:
1 in stock
Snap-ring located cup paired with its cone, 1.0001 in assembled width, 117,000 N dynamic and 178,000 N static capacity, K factor 1.4, e factor 0.42.
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| MFR / Brand | Timken |
|---|---|
| MPN | 27689/27620RB |
| Model | 27689-3 27620-RB |
| Bearing Type | Tapered Roller Bearing Cone |
| ID | 3.2813 in |
| OD | 4.9375 in |
| Series | 27600 |
|---|---|
| Base Number | 27689 |
| Overall Width | 1.0001 in |
| Mpn Variants | 27689/27620RB; 27620-RB; 27620 RB; 27689 27620RB; 27689/27620 |
| Precision Class | Not specified |
| Dynamic Load Rating C1 | 117,000 N |
| Dynamic Load Rating | 117,000 N |
| Static Load Rating | 178,000 N |
| Rolling Elements | Tapered Roller |
| Item Weight | 1.00 kg (2.30 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | With Snap Ring |
| Harmonization Code | 8482.20.00 |
| Cup Part Number | 27620RB |
| Design Units | Imperial |
| Bearing Material | Case-Carburized Steel |
| Cup Width | 0.7813 in |
| Cup Backface To Clear Radius | 0.06 in |
| Cone Part Number | 27689 |
| Cone Width | 1.0000 in |
| Cone Backface To Clear Radius | 0.030 in |
| Cone Frontface Backing Diameter | 3.54 in |
| Cup Frontface Backing Diameter | 4.75 in |
| Cage Cone Frontface Clearance | 0.09 in |
| Cage Cone Backface Clearance | 0.05 in |
| Effective Center Location | 0.02 in |
| Cross Reference 1 | SKF 27689 (cone interchange) |
|---|---|
| Cross Reference 2 | FAG K-27689 (cone interchange) |
| Cross Reference 3 | NTN 4T-27689 (cone interchange) |
| Cross Reference 4 | Koyo 27689 (cone interchange) |
| Cross Reference 5 | Fersa 27689 (cone interchange) |
Timken 27689/27620RB inch tapered roller bearing, supplied as a matched cone and snap-ring cup. Cone Part Number: 27689. Cup Part Number: 27620RB. Base Number: 27689. Series: 27600. Design Units: Imperial. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Case-Carburized Steel.
27689 — the cone, the inner ring with its roller and cage assembly, 3.2813 in bore.
27620 — the cup, the outer race that carries the matching raceway, 4.9375 in outside diameter.
RB — the TSRB snap-ring cup execution. The cup outside diameter carries a machined groove and a snap ring, which locates the cup axially in a through-bored housing.
Precision Class: Not specified. The designation carries no precision suffix.
Bore Diameter: 3.2813 in (83.345 mm). Outside Diameter: 4.9375 in (125.413 mm). Overall Width: 1.0001 in (25.403 mm) assembled. Item Weight: 1.00 kg (2.30 lb).
Dynamic Load Rating: 117,000 N at one million revolutions. Static Load Rating: 178,000 N. Dynamic Radial Rating at 90 million revolutions: 30,400 N. Dynamic Axial Rating at 90 million revolutions: 21,600 N.
K Factor: 1.4. e Factor: 0.42. Y Factor: 1.44. A K factor of 1.4 marks a steeper roller taper than the general-purpose range, so a larger share of applied load is carried as thrust reaction.
G1 Factor: 98.2. G2 Factor: 41.8. Geometry Factor (Cg): 0.120.
The snap ring and its groove take axial load directly into the housing wall, so a plain through-bored housing locates the cup on the ring side.
Cone Width: 1.0000 in. Cup Width: 0.7813 in. Effective Center Location: 0.02 in.
Shaft Backing Shoulder Diameter, frontface: 3.54 in. Shaft Backing Shoulder Diameter, backface: 3.54 in. Housing Backing Shoulder Diameter, frontface: 4.75 in. Housing Backing Shoulder Diameter, backface: 4.53 in.
Maximum Shaft Fillet Radius cleared by the bearing corner: 0.030 in. Maximum Housing Fillet Radius cleared by the bearing corner: 0.06 in. Cage Location relative to backface: 0.05 in. Cage Location relative to frontface: 0.09 in.
Unit Quantity: 2 Pc — one 27689 cone and one 27620RB snap-ring cup, the complete single-row tapered set. Mounted in opposing pairs on a shaft for two-point location.
The cone number 27689 is an industry-standard inch taper designation and carries across makers. SKF 27689. FAG K-27689. NTN 4T-27689. Koyo 27689. Fersa 27689. At set level the snap-ring groove is specific to the RB cup execution, so the Timken 27689/27620 set shares the raceways and envelope while locating differently.
Searchable designation variants: 27689/27620RB, 27620-RB, 27620 RB, 27689 27620RB, 27689/27620, TSRB snap ring cup.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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