LM SERIES | INCH TAPERED ROLLER BEARINGS
Series Overview
The LM series are inch-dimensioned, single-row tapered roller bearings designed to carry simultaneous radial and axial loads. The tapered geometry of the raceways converges at a common apex, giving the series its characteristic thrust capacity alongside high radial load performance.
The series spans bore diameters from 17 mm (LM11749) to 197 mm (LM540049), covering the most common inch tapered roller sizes used in agricultural machinery, industrial gearboxes and automotive drivetrains. Key models include LM104949 (50.8 mm bore), LM501349 (41.3 mm), LM603049 (45.2 mm) and the large-bore LL225749 (127 mm).
Supplied by GBC as matched cone-and-cup assemblies, interchangeable with SKF, FAG, NSK and Timken equivalents. MOQ 100 pieces.
Key Design Features
Combined radial and axial load capacity
Tapered raceway geometry handles both radial load and one-directional axial thrust simultaneously.
Separable cone and cup
Cone (inner ring assembly) and cup (outer ring) can be installed independently, simplifying assembly and allowing individual replacement.
Wide bore range in one series
Coverage from d 17 mm to d 197 mm within a single series prefix.
Direct interchange with major brands
Dimensionally equivalent to SKF, FAG, NSK and Timken LM series. Drop-in replacement.
Boundary dimensions: d bore · D outer diameter · T / B width (mm)
Complete Specification Table
Dimensions in mm · Load ratings in N · Weight in kg
Small bore — d 17 to 25 mm
| Bearing No. | d | D | T | Dynamic (N) | Static (N) | Weight (kg) |
|---|---|---|---|---|---|---|
| LM11749/10 | 17.462 | 39.878 | 13.843 | 22,900 | 23,400 | 0.08 |
| LM11949/10 | 19.050 | 45.237 | 15.494 | 30,600 | 32,000 | 0.12 |
| LM12748/10 | 21.400 | 45.237 | 15.494 | 30,200 | 35,300 | 0.12 |
| LM12749/10 | 21.986 | 45.237 | 15.494 | 30,200 | 35,300 | 0.12 |
| LM12749/11 | 21.986 | 45.974 | 15.494 | 30,200 | 35,300 | 0.12 |
| LM72849/10 | 22.606 | 47.000 | 15.500 | 27,500 | 33,000 | 0.12 |
Medium-small bore — d 31 to 38 mm
| Bearing No. | d | D | T | Dynamic (N) | Static (N) | Weight (kg) |
|---|---|---|---|---|---|---|
| LM29748/10 | 38.100 | 65.088 | 18.034 | 45,000 | 60,300 | 0.22 |
| LM29749/10 | 38.100 | 65.088 | 18.034 | 45,000 | 60,300 | 0.22 |
| LM48548/10 | 34.925 | 65.088 | 18.034 | 50,500 | 63,100 | 0.26 |
| LM48548/11A | 34.925 | 65.088 | 21.082 | 50,500 | 63,100 | 0.28 |
| LM67048/10 | 31.750 | 59.131 | 15.875 | 36,500 | 44,600 | 0.17 |
| LM67048L/10 | 31.750 | 59.131 | 15.875 | 36,500 | 44,600 | 0.17 |
| LM67049A/10 | 31.750 | 59.131 | 16.800 | 36,500 | 44,600 | 0.182 |
| LM78349/10A | 34.988 | 61.973 | 16.700 | 39,400 | 52,400 | 0.19 |
Medium bore — d 41 to 51 mm
| Bearing No. | d | D | T | Dynamic (N) | Static (N) | Weight (kg) |
|---|---|---|---|---|---|---|
| LM102949/10 | 45.242 | 73.431 | 19.558 | 56,900 | 81,800 | 0.31 |
| LM104949/10 | 50.800 | 82.000 | 21.590 | 75,200 | 104,000 | 0.418 |
| LM104949/11 | 50.800 | 82.550 | 21.590 | 75,200 | 104,000 | 0.420 |
| LM104949/11A | 50.800 | 82.550 | 23.622 | 75,200 | 104,000 | 0.445 |
| LM104949/12 | 50.800 | 82.931 | 21.590 | 75,200 | 104,000 | 0.420 |
| LM104949E/11 | 50.800 | 82.550 | 21.590 | 75,200 | 104,000 | 0.967 |
| LM300849/11 | 40.988 | 67.975 | 17.500 | 46,100 | 63,500 | 0.23 |
| LM501349/10 | 41.275 | 73.431 | 19.558 | 58,400 | 74,200 | 0.32 |
| LM501349/14 | 41.275 | 73.431 | 21.430 | 58,400 | 74,200 | 0.34 |
| LM503349A/10 | 45.987 | 74.976 | 18.000 | 52,600 | 75,400 | 0.29 |
Medium-large bore — d 45 to 64 mm
| Bearing No. | d | D | T | Dynamic (N) | Static (N) | Weight (kg) |
|---|---|---|---|---|---|---|
| LM603049/11 | 45.242 | 77.788 | 19.842 | 59,600 | 77,900 | 0.36 |
| LM603049/12 | 45.242 | 77.788 | 21.430 | 59,600 | 77,900 | 0.37 |
| LM603049A/14 | 45.242 | 80.000 | 19.842 | 59,600 | 77,900 | 0.39 |
| LM610549/10 | 63.500 | 94.458 | 19.050 | 62,000 | 108,000 | 0.45 |
Large bore — d 108 to 197 mm
| Bearing No. | d | D | T | Dynamic (N) | Static (N) | Weight (kg) |
|---|---|---|---|---|---|---|
| LM521949/10 | 107.950 | 146.050 | 21.433 | 88,900 | 186,000 | 0.99 |
| LL225749/10 | 127.000 | 165.895 | 18.258 | 83,500 | 153,000 | 0.92 |
| LM540049/10 | 196.850 | 254.000 | 28.575 | 195,000 | 408,000 | 3.26 |
Typical Applications
LM series bearings are a standard choice wherever an inch-dimensioned shaft must carry combined radial load and one-directional axial thrust across agricultural, mining, industrial and automotive equipment in Australia.
Agricultural machinery
Gearboxes, axles, wheel hubs, baler and harvester drivetrain shafts
Mining and bulk handling
Conveyor pulleys, crusher drives, screen and feeder shafts
Industrial gearboxes
Speed reducers, helical and worm gear units, mixer drives
Heavy vehicle drivetrains
Truck axle ends, differential pinions, wheel hub units
Construction equipment
Excavator drives, crane rope drums, concrete mixer drives
Pumps and compressors
Centrifugal pump shafts, compressor crankshafts, blower drives
Need a specific LM series bearing?
Contact us for pricing, stock and lead times. We can assist with interchange lookups for SKF, FAG, NSK and Timken equivalents.
GBC-supplied LM series inch tapered roller bearings, d 17–197 mm. Single row, separable cone and cup. Interchangeable with SKF, FAG, NSK and Timken
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.






