368A Bearing Dimensions
368A inch tapered roller bearing cone, paired with the 362A cup: 50.8 mm (2.000 in) bore, 88.9 mm OD, 20.638 mm width (FULI catalog). Quote.
368A specifications
| Cone bore d | 50.8 mm (2.000 in) |
|---|---|
| Cone width B | 22.225 mm |
| Matching cup | 362A |
| Cup outside diameter D | 88.9 mm (3.500 in) |
| Total width T | 20.638 mm (0.813 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 |
368A cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| 368A | 362A | 50.8 mm (2.000 in) | 88.9 mm (3.500 in) | 20.638 mm (0.813 in) | 75.8 | 89.5 |
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 368A designation
| Segment | Meaning |
|---|---|
| 368A | Designation breakdown not available for this model. |
368A interchange
368A 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.
368A compared with nearby cone sizes
The 368A cone has a 50.8 mm (2.000 in) bore and a cone width of 22.225 mm. FULI's catalog pairs it with cup 362A (88.9 mm outside diameter, 20.638 mm total width).
The next smaller cone on this site is 368, with a 50.8 mm bore (0 mm smaller) and cup 362A.
The next larger is 3780, with a 50.8 mm bore (0 mm larger) and cup 3720.
Cup 362A is also listed with 368, so the same housing bore can take a different cone if the shaft size changes.
The metric tapered bearing on this site closest in bore is 32010 (50 × 80 × 20 mm). Its sizes differ from the 368A pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| 25590 | 25522 | 45.618 × 83.058 × 23.876 mm | 78.3 |
| 28580 | 28521 | 50.8 × 92.075 × 24.6 mm | 86.3 |
| 368 | 362A | 50.8 × 88.9 × 20.638 mm | 75.8 |
| 368A | 362A | 50.8 × 88.9 × 20.638 mm | 75.8 |
| 3780 | 3720 | 50.8 × 93.264 × 30.162 mm | 113 |
| 3784 | 3720 | 50.8 × 93.264 × 30.162 mm | 113 |
| 385A | 382A | 50.8 × 96.838 × 21 mm | 81.6 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
368A load ratings
368A/362A has a dynamic load rating Cr of 75.8 kN and a static rating C0r of 89.5 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.
368A size in inches and millimetres
368A is made to inch sizes. The 50.8 mm bore is 2 in. The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 50.8 mm | 2.0000 in |
| Cup outside diameter D (362A) | 88.9 mm | 3.5000 in |
| Total width T | 20.638 mm | 0.8125 in |
| Cone width B | 22.225 mm | 0.8750 in |
| Cup width C | 16.513 mm | 0.6501 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting 368A (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 368A 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 368A
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating 368A/362A from the side takes about 9.17 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 88.9 × 20.64.
How FULI supplies 368A
368A 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 (20.638 mm for 368A/362A), 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 368A/362A.
Tools and guides for 368A
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is 368A in mm?
The 368A cone has a 50.8 mm bore (2.000 in). With cup 362A the bearing is 50.8 × 88.9 × 20.638 mm (d × D × T).
What is the difference between 368A and 3780?
3780 has a 50.8 mm bore against 50.8 mm for 368A, and pairs with cup 3720 (50.8 × 93.264 × 30.162 mm) instead of 362A (50.8 × 88.9 × 20.638 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does 368A/362A need?
About 9.17 g each time it is relubricated from the side (0.005 × 88.9 × 20.64). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the 368A cone?
FULI's catalog pairs the 368A cone with cup 362A. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is 368A the same size across brands?
368A 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.