15120 Bearing Dimensions
15120 inch tapered roller bearing cone, paired with the 15243 cup: 30.213 mm (1.189 in) bore, 61.912 mm OD, 19.05 mm width (FULI catalog). Quote.
15120 specifications
| Cone bore d | 30.213 mm (1.189 in) |
|---|---|
| Cone width B | 20.638 mm |
| Matching cup | 15243 |
| Cup outside diameter D | 61.912 mm (2.437 in) |
| Total width T | 19.05 mm (0.75 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 |
15120 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| 15120 | 15243 | 30.213 mm (1.189 in) | 61.912 mm (2.437 in) | 19.05 mm (0.75 in) | 44.6 | 50.7 |
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 15120 designation
| Segment | Meaning |
|---|---|
| 15120 | Designation breakdown not available for this model. |
15120 interchange
15120 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.
15120 compared with nearby cone sizes
The 15120 cone has a 30.213 mm (1.189 in) bore and a cone width of 20.638 mm. FULI's catalog pairs it with cup 15243 (61.912 mm outside diameter, 19.05 mm total width).
The next smaller cone on this site is 15117, with a 29.987 mm bore (0.23 mm smaller) and cup 15245.
The next larger is 14116, with a 30.226 mm bore (0.01 mm larger) and cup 14276.
The metric tapered bearing on this site closest in bore is 32006 (30 × 55 × 17 mm). Its sizes differ from the 15120 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| L44649 | L44610 | 26.988 × 50.292 × 14.224 mm | 28.3 |
| L45449 | L45410 | 29 × 50.292 × 14.224 mm | 28.7 |
| 15117 | 15245 | 29.987 × 62 × 19.05 mm | 46.8 |
| 15120 | 15243 | 30.213 × 61.912 × 19.05 mm | 44.6 |
| 14116 | 14276 | 30.226 × 69.012 × 19.845 mm | 50.6 |
| 14125A | 14276 | 31.75 × 69.012 × 19.845 mm | 46.1 |
| 15123 | 15245 | 31.75 × 62 × 19.05 mm | 44.6 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
15120 load ratings
15120/15243 has a dynamic load rating Cr of 44.6 kN and a static rating C0r of 50.7 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.
15120 size in inches and millimetres
15120 is made to inch sizes. The 30.213 mm bore is 1.1895 in; the nearest common fraction is 1-3/16 in (30.16 mm). The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 30.213 mm | 1.1895 in |
| Cup outside diameter D (15243) | 61.912 mm | 2.4375 in |
| Total width T | 19.05 mm | 0.7500 in |
| Cone width B | 20.638 mm | 0.8125 in |
| Cup width C | 14.288 mm | 0.5625 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting 15120 (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 15120 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 15120
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating 15120/15243 from the side takes about 5.90 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 61.91 × 19.05.
How FULI supplies 15120
15120 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 (19.05 mm for 15120/15243), 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 15120/15243.
Tools and guides for 15120
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is 15120 in mm?
The 15120 cone has a 30.213 mm bore (1.189 in). With cup 15243 the bearing is 30.213 × 61.912 × 19.05 mm (d × D × T).
What is the difference between 15120 and 14116?
14116 has a 30.226 mm bore against 30.213 mm for 15120, and pairs with cup 14276 (30.226 × 69.012 × 19.845 mm) instead of 15243 (30.213 × 61.912 × 19.05 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does 15120/15243 need?
About 5.90 g each time it is relubricated from the side (0.005 × 61.91 × 19.05). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the 15120 cone?
FULI's catalog pairs the 15120 cone with cup 15243. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is 15120 the same size across brands?
15120 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.