LM29748 Bearing Dimensions
LM29748 inch tapered roller bearing cone, paired with the LM29710 cup: 38.1 mm (1.500 in) bore, 65.088 mm OD, 18.034 mm width (FULI catalog). Quote.
LM29748 specifications
| Cone bore d | 38.1 mm (1.500 in) |
|---|---|
| Cone width B | 18.288 mm |
| Matching cup | LM29710 |
| 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 |
LM29748 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| LM29748 | LM29710 | 38.1 mm (1.500 in) | 65.088 mm (2.563 in) | 18.034 mm (0.71 in) | 43.4 | 56.8 |
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 LM29748 designation
| Segment | Meaning |
|---|---|
| LM | Prefix LM: light-medium series (inch tapered roller bearing numbering) |
| 29748 | Series and part number of the cone; the matching cup has its own number, listed in the pairs table on this page |
LM29748 interchange
LM29748 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.
LM29748 compared with nearby cone sizes
The LM29748 cone has a 38.1 mm (1.500 in) bore and a cone width of 18.288 mm. FULI's catalog pairs it with cup LM29710 (65.088 mm outside diameter, 18.034 mm total width).
The next smaller cone on this site is 2788, with a 38.1 mm bore (0 mm smaller) and cup 2720.
The next larger is LM29749, with a 38.1 mm bore (0 mm larger) and cup LM29711.
Cup LM29710 is also listed with LM29749, 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 32008 (40 × 68 × 19 mm). Its sizes differ from the LM29748 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| JL68145 | L68111 | 35 × 59.974 × 15.875 mm | 34.9 |
| HM89449 | HM89410 | 36.512 × 76.2 × 29.37 mm | 80.1 |
| 2788 | 2720 | 38.1 × 76.2 × 23.812 mm | 80.4 |
| LM29748 | LM29710 | 38.1 × 65.088 × 18.034 mm | 43.4 |
| LM29749 | LM29711 | 38.1 × 65.088 × 19.812 mm | 43.2 |
| U399 | U360L | 39.688 × 73.025 × 19.395 mm | 55.1 |
| 342A | 332 | 41.275 × 80 × 28.575 mm | 69.6 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
LM29748 load ratings
LM29748/LM29710 has a dynamic load rating Cr of 43.4 kN and a static rating C0r of 56.8 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.
LM29748 size in inches and millimetres
LM29748 is made to inch sizes. The 38.1 mm bore is 1-1/2 in. The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 38.1 mm | 1.5000 in |
| Cup outside diameter D (LM29710) | 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 LM29748 (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 LM29748 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 LM29748
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating LM29748/LM29710 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 LM29748
LM29748 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 LM29748/LM29710), 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 LM29748/LM29710.
Tools and guides for LM29748
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is LM29748 in mm?
The LM29748 cone has a 38.1 mm bore (1.500 in). With cup LM29710 the bearing is 38.1 × 65.088 × 18.034 mm (d × D × T).
What is the difference between LM29748 and LM29749?
LM29749 has a 38.1 mm bore against 38.1 mm for LM29748, and pairs with cup LM29711 (38.1 × 65.088 × 19.812 mm) instead of LM29710 (38.1 × 65.088 × 18.034 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does LM29748/LM29710 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 LM29748 cone?
FULI's catalog pairs the LM29748 cone with cup LM29710. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is LM29748 the same size across brands?
LM29748 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.