L44643 Bearing Dimensions
L44643 inch tapered roller bearing cone, paired with the L44610 cup: 25.4 mm (1.000 in) bore, 50.292 mm OD, 14.224 mm width (FULI catalog). Quote.
L44643 specifications
| Cone bore d | 25.4 mm (1.000 in) |
|---|---|
| Cone width B | 14.732 mm |
| Matching cup | L44610 |
| Cup outside diameter D | 50.292 mm (1.980 in) |
| Total width T | 14.224 mm (0.56 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 |
L44643 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| L44643 | L44610 | 25.4 mm (1.000 in) | 50.292 mm (1.980 in) | 14.224 mm (0.56 in) | 28.3 | 33 |
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 L44643 designation
| Segment | Meaning |
|---|---|
| L | Prefix L: light series (inch tapered roller bearing numbering) |
| 44643 | Series and part number of the cone; the matching cup has its own number, listed in the pairs table on this page |
L44643 interchange
L44643 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.
L44643 compared with nearby cone sizes
The L44643 cone has a 25.4 mm (1.000 in) bore and a cone width of 14.732 mm. FULI's catalog pairs it with cup L44610 (50.292 mm outside diameter, 14.224 mm total width).
The next smaller cone on this site is 7100, with a 25.4 mm bore (0 mm smaller) and cup 7204.
The next larger is L44649, with a 26.988 mm bore (1.59 mm larger) and cup L44610.
Cup L44610 is also listed with L44649, 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 32005 (25 × 47 × 15 mm). Its sizes differ from the L44643 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| 15101 | 15244 | 25.4 × 62 × 20.638 mm | 46.8 |
| 15102 | 15245 | 25.4 × 62 × 19.05 mm | 46.8 |
| 7100 | 7204 | 25.4 × 51.994 × 15.011 mm | 26.7 |
| L44643 | L44610 | 25.4 × 50.292 × 14.224 mm | 28.3 |
| 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 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
L44643 load ratings
L44643/L44610 has a dynamic load rating Cr of 28.3 kN and a static rating C0r of 33 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.
L44643 size in inches and millimetres
L44643 is made to inch sizes. The 25.4 mm bore is 1 in. The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 25.4 mm | 1.0000 in |
| Cup outside diameter D (L44610) | 50.292 mm | 1.9800 in |
| Total width T | 14.224 mm | 0.5600 in |
| Cone width B | 14.732 mm | 0.5800 in |
| Cup width C | 10.668 mm | 0.4200 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting L44643 (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 L44643 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 L44643
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating L44643/L44610 from the side takes about 3.58 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 50.29 × 14.22.
How FULI supplies L44643
L44643 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 (14.224 mm for L44643/L44610), 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 L44643/L44610.
Tools and guides for L44643
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is L44643 in mm?
The L44643 cone has a 25.4 mm bore (1.000 in). With cup L44610 the bearing is 25.4 × 50.292 × 14.224 mm (d × D × T).
What is the difference between L44643 and L44649?
L44649 has a 26.988 mm bore against 25.4 mm for L44643, and pairs with cup L44610 (26.988 × 50.292 × 14.224 mm) instead of L44610 (25.4 × 50.292 × 14.224 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does L44643/L44610 need?
About 3.58 g each time it is relubricated from the side (0.005 × 50.29 × 14.22). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the L44643 cone?
FULI's catalog pairs the L44643 cone with cup L44610. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is L44643 the same size across brands?
L44643 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.