Bearing LM 102949/ 102910 NTN

Key Specifications

Brand: NTN.

Model (Set): LM 102949 (cone) + LM 102910 (cup)

Bore (d): 45.242 mm (~1.7812″)

Outer diameter (D): 73.431 mm (~2.8910″)

Cone (inner ring) width (B): 19.812 mm (~0.7800″)

Cup (outer ring) width (C): 15.748 mm (~0.6200″)

Total set width (T): 19.558 mm (~0.7700″)

Dynamic radial load rating (C): ~60 kN

Static radial load rating (C₀): ~76 kN

Limiting speed (oil lubrication): ~6,400 rpm

Min operating temperature: –40 °C

Max operating temperature: ~120 °C (as typical)

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Features & Benefits

Tapered roller design (cone + cup) gives the ability to handle both radial loads and axial (thrust) loads in one direction.

Separable components facilitate installation, alignment, and preload/clearance adjustment.

Inch-series size (imperial units) makes it suitable for equipment originally designed in inches, or where retrofits are needed.

Robust load ratings (~60 kN dynamic) make it suitable for demanding applications with heavy loads and moderate speeds.

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Typical Applications

Gearboxes, transmissions and drive-shafts where both radial and axial loads occur.

Industrial equipment, mining or heavy-duty machinery using imperial-sized bearings (inch-series).

Retrofit scenarios where metric bearings are not suitable and the legacy machine expects inch-size bearings.

Shafts with shoulder and fillet constraints matching the bearing’s “to clear” dimensions (e.g., fillet radius requirements).