33287 Bearing Dimensions
33287 inch tapered roller bearing cone, paired with the 33462 cup: 73.025 mm (2.875 in) bore, 117.475 mm OD, 30.162 mm width (FULI catalog). Quote.
33287 specifications
| Cone bore d | 73.025 mm (2.875 in) |
|---|---|
| Cone width B | 30.162 mm |
| Matching cup | 33462 |
| Cup outside diameter D | 117.475 mm (4.625 in) |
| Total width T | 30.162 mm (1.1875 in) — assembled width of cup and cone |
| Seal / shield options | Open (cup and cone, no seals) |
| Material | GCr15 chrome bearing steel (rings and rolling elements) |
| Radial clearance | Set during mounting (adjustable, not a C-class value) |
| Load ratings | See the cone and cup pairs table below |
33287 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| 33287 | 33462 | 73.025 mm (2.875 in) | 117.475 mm (4.625 in) | 30.162 mm (1.1875 in) | 128 | 197 |
Dimensions from FULI's catalog. A cone (inner ring with rollers and cage) and a cup (outer ring) make up one bearing; the pairs above are the matching numbers listed in FULI's catalog. Values from FULI's catalog; confirm for your application.
How to read the 33287 designation
| Segment | Meaning |
|---|---|
| 3 | Single row tapered roller bearing (metric, ISO 355) |
| 32 | Dimension series 32 |
| 87 | Bore code 87 → 73.025 mm bore. ISO bore code (00–03 = 10/12/15/17 mm; 04 and above = code × 5 mm). |
33287 interchange
33287 is an inch tapered roller bearing cone. Inch tapered roller bearings are ordered by cone number and cup number. Most makers use the same cone and cup numbers for the same size, but always check the cup number as well. Send us the numbers on your old bearing and we confirm the match before quoting.
Brand names are trademarks of their respective owners. FULI is not affiliated with, authorized by or endorsed by these companies. Part numbers are shown for interchange reference only. FULI dimensions, load ratings and speeds come from the FULI catalog.
33287 compared with nearby cone sizes
The 33287 cone has a 73.025 mm (2.875 in) bore and a cone width of 30.162 mm. FULI's catalog pairs it with cup 33462 (117.475 mm outside diameter, 30.162 mm total width).
The next smaller cone on this site is HM212049, with a 66.675 mm bore (6.35 mm smaller) and cup HM212011.
The next larger is 6461A, with a 76.2 mm bore (3.17 mm larger) and cup 6420.
The metric tapered bearing on this site closest in bore is 33015 (75 × 115 × 31 mm). Its sizes differ from the 33287 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| 395S | 394A | 66.675 × 110 × 22 mm | 88.6 |
| 3984 | 3920 | 66.675 × 112.712 × 30.162 mm | 120.2 |
| HM212049 | HM212011 | 66.675 × 122.238 × 38.1 mm | 191.3 |
| 33287 | 33462 | 73.025 × 117.475 × 30.162 mm | 128 |
| 6461A | 6420 | 76.2 × 149.225 × 53.975 mm | — |
| 580 | 572 | 82.55 × 139.992 × 36.512 mm | 176.3 |
| 663 | 653 | 82.55 × 146.05 × 41.275 mm | 210.4 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
33287 load ratings
33287/33462 has a dynamic load rating Cr of 128 kN and a static rating C0r of 197 kN in FULI's catalog. The ratings belong to the cone and cup as a pair; a different cup changes them.
Speed limits and weights for inch cones are not listed in the catalog; ask us and we send them with the quotation.
Values from FULI's catalog; confirm for your application.
33287 size in inches and millimetres
33287 is made to inch sizes. The 73.025 mm bore is 2-7/8 in. The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 73.025 mm | 2.8750 in |
| Cup outside diameter D (33462) | 117.475 mm | 4.6250 in |
| Total width T | 30.162 mm | 1.1875 in |
| Cone width B | 30.162 mm | 1.1875 in |
| Cup width C | 23.812 mm | 0.9375 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting 33287 (general guidance)
General guidance, not a FULI specification: on a turning shaft the cone is a tight fit on the shaft and the cup a lighter fit in the housing, so the cup can be moved when the bearing pair is adjusted. Inch bearing fits are given as shaft and housing limits in inches in the bearing makers' tables; follow the drawing of your machine.
Tapered roller bearings carry radial load and axial load in one direction, so 33287 is normally used as one of a pair, and the end play or preload is set at mounting.
If the outer ring turns and the shaft stands still, as in an idler pulley or a wheel hub, the fits are reversed: the housing gets the interference fit (for example N7 or P7) and the shaft a sliding one (g6 or h6).
Grease for 33287
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating 33287/33462 from the side takes about 17.7 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 117.47 × 30.16.
How FULI supplies 33287
33287 is supplied as a cone, as a cup or as a complete cone and cup pair, as your order states. Where an order states a requirement for the total width T (30.162 mm for 33287/33462), each set is checked on a height gauge before packing.
Rings are marked with a brand you are authorised to use, with the FULI brand, or left neutral, as your order states. The box is printed with the model, precision class and brand.
Inquiries that give only one number are the usual cause of a wrong quote, so write both the cone and the cup number, for example 33287/33462.
Tools and guides for 33287
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is 33287 in mm?
The 33287 cone has a 73.025 mm bore (2.875 in). With cup 33462 the bearing is 73.025 × 117.475 × 30.162 mm (d × D × T).
What is the difference between 33287 and 6461A?
6461A has a 76.2 mm bore against 73.025 mm for 33287, and pairs with cup 6420 (76.2 × 149.225 × 53.975 mm) instead of 33462 (73.025 × 117.475 × 30.162 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does 33287/33462 need?
About 17.7 g each time it is relubricated from the side (0.005 × 117.47 × 30.16). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the 33287 cone?
FULI's catalog pairs the 33287 cone with cup 33462. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is 33287 the same size across brands?
33287 is an inch tapered roller bearing cone number. Most makers use the same cone and cup numbers for the same size, but check the cup number too. Send us the numbers on your old bearing and we confirm the match.