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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Availability:
18 in stock
Tapered roller bearing cone and cup set, 1-1/2 in bore, 3.1510 in OD, 0.9688 in assembled width, K factor 1.04, Class 3, case-carburized steel.
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$68.66
18 in stock
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| MFR / Brand | Timken |
|---|---|
| MPN | 27881-3/27820-3 |
| Model | 27881 *3 / 27820 *3 |
| Bearing Type | Tapered Roller Bearing (cone and cup set) |
| ID | 1.5000 in (38.1 mm) |
| OD | 3.1510 in (80.035 mm) |
| Width | 0.9688 in (24.608 mm) |
| Base Number | 27881/27820 |
|---|---|
| Industry Terms | Taper bearing set; cone and cup; tapered roller bearing assembly; TS tapered single; Class 3 tapered roller bearing |
| Common Misspellings | 27881 27820; 2788l/27820; 27881-3 27820-3; 27881/2782O; Timkin 27881/27820 |
| Application Types | Gearboxes; axles and wheel ends; pinion shafts; agricultural and construction drivelines; industrial reducers |
| Bore Shaft Size | 1-1/2 in (1.5000 in, 38.1 mm) |
| Mpn Variants | 27881-3/27820-3; 27881/27820; 27881-27820; 27881 27820; 27881 *3 27820 *3; 27881#3/27820#3 |
| Compatible With Replaces | Cone 27881 mates with cup 27820 |
| Precision Class | Class 3 |
| Material | Case-carburized steel |
| Dynamic Load Rating | 78,000 N |
| Static Load Rating | 91,100 N |
| Series | 27881/27820 imperial single-row (TS) series |
| Rolling Elements | Tapered roller |
| Type | Tapered Roller Bearing |
| Item Weight | 1.2 lb |
| Number Of Rows | 1 |
| Harmonization Code | 8482.20.00 |
| Cup Part Number | 27820-3 |
| Cup Width | 0.7288 in (18.512 mm) outer ring width C |
| Cup Backface To Clear Radius | 0.06 in (1.52 mm) max housing fillet radius |
| Part Number | 27881-3/27820-3 |
| Cone Part Number | 27881-3 |
| Cone Width | 0.9330 in (23.698 mm) inner ring width B |
| Cone Backface To Clear Radius | 0.14 in (3.600 mm) max shaft fillet radius |
| Cone Frontface Backing Diameter | 1.85 in (47 mm) da frontface; 2.09 in (53 mm) db backface |
| Cup Frontface Backing Diameter | 2.99 in (75.90 mm) Da frontface; 2.68 in (68.07 mm) Db backface |
| Effective Center Location | -0.1 in (-2.5 mm), inside cone backface |
| Cage Material | Stamped steel |
Timken 27881-3/27820-3 single-row tapered roller bearing, supplied as a matched cone and cup set of 2 pieces. The 27881-3 is the cone, the inner ring with its roller and cage assembly; the 27820-3 is the cup, the outer race. Bore 1-1/2 in (38.1 mm), cup outside diameter 3.1510 in (80.035 mm), assembled width 0.9688 in (24.608 mm). Class 3 precision.
27881 — Timken cone number.
27820 — Timken cup number that mates with cone 27881.
-3 / *3 — Timken precision Class 3, marked on the carton as 27881 *3 and 27820 *3.
Bore Diameter: 1.5000 in (38.1 mm).
Outside Diameter: 3.1510 in (80.035 mm).
Assembled Width: 0.9688 in (24.608 mm).
Cone Width: 0.9330 in (23.698 mm).
Cup Width: 0.7288 in (18.512 mm).
Precision Class: Class 3.
Dynamic Load Rating: 78,000 N (17,500 lbf), ISO one-million-revolution basis.
Dynamic Radial Rating C90: 20,200 N (4,550 lbf), ninety-million-revolution basis.
Dynamic Axial Rating Ca90: 19,400 N (4,370 lbf).
Static Load Rating: 91,100 N (20,500 lbf).
K Factor: 1.04. e Factor: 0.56. Y Factor: 1.07.
Cage: Stamped steel.
Material: Case-carburized steel.
Item Weight: 1.2 lb.
Unit Quantity: 2 Pcs (1 cone, 1 cup).
Shaft backing shoulder diameter: 1.85 in at the frontface, 2.09 in at the backface. Housing backing shoulder diameter: 2.99 in at the frontface, 2.68 in at the backface. Maximum shaft fillet radius: 0.14 in. Maximum housing fillet radius: 0.06 in. Effective centre location: -0.1 in, inside the cone backface. Cage location: 0.1 in from the backface, 0.09 in from the frontface. Cg: 0.0839, G1: 24.6, G2: 12.6.
Cone 27881 mates with cup 27820. Searchable forms: 27881-3/27820-3, 27881/27820, 27881 *3 27820 *3. Source: Timken CAD data for 27881/27820.
Two pieces: one 27881-3 cone and one 27820-3 cup.
1-1/2 in bore, 3.1510 in cup outside diameter, 0.9688 in assembled width.
Class 3, from the -3 suffix and the *3 carton marking on both parts.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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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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