LM48548 Bearing Dimensions
LM48548 inch tapered roller bearing cone, paired with the LM48510 cup: 34.925 mm (1.375 in) bore, 65.088 mm OD, 18.034 mm width (FULI catalog). Quote.
LM48548 specifications
| Cone bore d | 34.925 mm (1.375 in) |
|---|---|
| Cone width B | 18.288 mm |
| Matching cup | LM48510 |
| Cup outside diameter D | 65.088 mm (2.563 in) |
| Total width T | 18.034 mm (0.71 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 |
LM48548 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| LM48548 | LM48510 | 34.925 mm (1.375 in) | 65.088 mm (2.563 in) | 18.034 mm (0.71 in) | 48.2 | 58.8 |
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 LM48548 designation
| Segment | Meaning |
|---|---|
| LM | Prefix LM: light-medium series (inch tapered roller bearing numbering) |
| 48548 | Series and part number of the cone; the matching cup has its own number, listed in the pairs table on this page |
LM48548 interchange
LM48548 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.
LM48548 compared with nearby cone sizes
The LM48548 cone has a 34.925 mm (1.375 in) bore and a cone width of 18.288 mm. FULI's catalog pairs it with cup LM48510 (65.088 mm outside diameter, 18.034 mm total width).
The next smaller cone on this site is HM88649, with a 34.925 mm bore (0 mm smaller) and cup HM88610.
The next larger is LM48549, with a 34.925 mm bore (0 mm larger) and cup LM48510.
Cup LM48510 is also listed with LM48549, 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 32007 (35 × 62 × 18 mm). Its sizes differ from the LM48548 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| 14137A | 14276 | 34.925 × 69.012 × 19.845 mm | 48.3 |
| 25877 | 25820 | 34.925 × 73.025 × 23.812 mm | 72.3 |
| HM88649 | HM88610 | 34.925 × 72.233 × 25.4 mm | 66.5 |
| LM48548 | LM48510 | 34.925 × 65.088 × 18.034 mm | 48.2 |
| LM48549 | LM48510 | 34.925 × 65.088 × 18.034 mm | 48.2 |
| 14139 | 14276 | 34.976 × 69.012 × 19.845 mm | 50.6 |
| L68149 | L68110 | 34.988 × 59.131 × 15.875 mm | 34.9 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
LM48548 load ratings
LM48548/LM48510 has a dynamic load rating Cr of 48.2 kN and a static rating C0r of 58.8 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.
LM48548 size in inches and millimetres
LM48548 is made to inch sizes. The 34.925 mm bore is 1-3/8 in. The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 34.925 mm | 1.3750 in |
| Cup outside diameter D (LM48510) | 65.088 mm | 2.5625 in |
| Total width T | 18.034 mm | 0.7100 in |
| Cone width B | 18.288 mm | 0.7200 in |
| Cup width C | 13.97 mm | 0.5500 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting LM48548 (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 LM48548 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 LM48548
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating LM48548/LM48510 from the side takes about 5.87 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 65.09 × 18.03.
How FULI supplies LM48548
LM48548 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 (18.034 mm for LM48548/LM48510), 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 LM48548/LM48510.
Tools and guides for LM48548
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is LM48548 in mm?
The LM48548 cone has a 34.925 mm bore (1.375 in). With cup LM48510 the bearing is 34.925 × 65.088 × 18.034 mm (d × D × T).
What is the difference between LM48548 and LM48549?
LM48549 has a 34.925 mm bore against 34.925 mm for LM48548, and pairs with cup LM48510 (34.925 × 65.088 × 18.034 mm) instead of LM48510 (34.925 × 65.088 × 18.034 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does LM48548/LM48510 need?
About 5.87 g each time it is relubricated from the side (0.005 × 65.09 × 18.03). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the LM48548 cone?
FULI's catalog pairs the LM48548 cone with cup LM48510. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is LM48548 the same size across brands?
LM48548 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.