LM104949 Bearing Dimensions
LM104949 inch tapered roller bearing cone, paired with the LM104911 or LM104912 cup: 50.8 mm (2.000 in) bore, 82.55 mm OD, 21.59 mm width (FULI catalog). Quote.
LM104949 specifications
| Cone bore d | 50.8 mm (2.000 in) |
|---|---|
| Cone width B | 22.225 mm |
| Matching cups | LM104911, LM104912 — sizes for each pair below |
| 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 |
LM104949 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| LM104949 | LM104911 | 50.8 mm (2.000 in) | 82.55 mm (3.250 in) | 21.59 mm (0.85 in) | 70.5 | 95.3 |
| LM104949 | LM104912 | 50.8 mm (2.000 in) | 82.931 mm (3.265 in) | 21.59 mm (0.85 in) | 70.5 | 95.3 |
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 LM104949 designation
| Segment | Meaning |
|---|---|
| LM | Prefix LM: light-medium series (inch tapered roller bearing numbering) |
| 104949 | Series and part number of the cone; the matching cup has its own number, listed in the pairs table on this page |
LM104949 interchange
LM104949 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.
LM104949 compared with nearby cone sizes
The LM104949 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 LM104911 (82.55 mm outside diameter, 21.59 mm total width) and cup LM104912 (82.931 mm outside diameter, 21.59 mm total width).
The next smaller cone on this site is 385A, with a 50.8 mm bore (0 mm smaller) and cup 382A.
The next larger is 385, with a 55 mm bore (4.2 mm larger) and cup 382A.
The metric tapered bearing on this site closest in bore is 32010 (50 × 80 × 20 mm). Its sizes differ from the LM104949 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| 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 |
| LM104949 | LM104911 | 50.8 × 82.55 × 21.59 mm | 70.5 |
| LM104949 | LM104912 | 50.8 × 82.931 × 21.59 mm | 70.5 |
| 385 | 382A | 55 × 96.838 × 21 mm | 81.6 |
| 28682 | 28622 | 57.15 × 97.63 × 24.608 mm | 90.5 |
| 387A | 382A | 57.15 × 96.838 × 21 mm | 81.6 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
LM104949 load ratings
LM104949/LM104911 has a dynamic load rating Cr of 70.5 kN and a static rating C0r of 95.3 kN and LM104949/LM104912 has a dynamic load rating Cr of 70.5 kN and a static rating C0r of 95.3 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.
LM104949 size in inches and millimetres
LM104949 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 (LM104911) | 82.55 mm | 3.2500 in |
| Total width T | 21.59 mm | 0.8500 in |
| Cone width B | 22.225 mm | 0.8750 in |
| Cup width C | 16.51 mm | 0.6500 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting LM104949 (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 LM104949 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 LM104949
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating LM104949/LM104911 from the side takes about 8.91 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 82.55 × 21.59.
How FULI supplies LM104949
LM104949 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 (21.59 mm for LM104949/LM104911), 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 LM104949/LM104911.
Tools and guides for LM104949
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is LM104949 in mm?
The LM104949 cone has a 50.8 mm bore (2.000 in). With cup LM104911 the bearing is 50.8 × 82.55 × 21.59 mm (d × D × T). With cup LM104912 it is 82.931 mm outside diameter and 21.59 mm wide.
What is the difference between LM104949 and 385?
385 has a 55 mm bore against 50.8 mm for LM104949, and pairs with cup 382A (55 × 96.838 × 21 mm) instead of LM104911 (50.8 × 82.55 × 21.59 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does LM104949/LM104911 need?
About 8.91 g each time it is relubricated from the side (0.005 × 82.55 × 21.59). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the LM104949 cone?
FULI's catalog pairs the LM104949 cone with cups LM104911 and LM104912. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is LM104949 the same size across brands?
LM104949 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.