The NSK L44649 Tapered Roller Bearing is a precision single-row tapered roller bearing designed to support combined radial and axial loads. Manufactured by NSK Japan, this bearing is ideal for wheel hubs, transmissions, differentials, and other heavy-load applications where durability and reliable rotation are essential.
Product Overview
Tapered roller bearings consist of an inner ring (cone) and outer ring (cup) with tapered rollers in between. This design allows bearings like the L44649 to effectively carry radial loads as well as axial loads in one direction, making them ideal for automotive and industrial use.
The L44649 is typically paired with the L44610 (outer cup) to form a complete set. This bearing supports moderate loads and offers long service life under rotating and thrust conditions.
Key Features
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Precision single-row tapered roller bearing design
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Supports combined radial and axial loads (in one direction)
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Separable cone (inner ring) and cup (outer ring) for easier assembly
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Durable chrome steel rollers & rings for long life
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High radial load capacity with added axial load support
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Can be used in paired arrangements (X, O, tandem) depending on application requirements
Technical Specifications
| Specification |
Detail |
| Brand |
NSK |
| Part Number |
L44649 (paired with L44610 cup) |
| Bearing Type |
Single-row Tapered Roller Bearing |
| Inner Diameter (d) |
26.988 mm |
| Outer Diameter (D) |
50.292 mm |
| Total Width (T) |
14.224 mm |
| Inner Ring Width (B) |
14.732 mm |
| Outer Ring Width (C) |
10.668 mm |
| Dynamic Load Rating (Cr) |
~34,000 N (approx.) |
| Static Load Rating (C0r) |
~32,000 N (approx.) |
| Max Speed (Grease) |
~7,100 rpm |
| Max Speed (Oil) |
~10,000 rpm |
| Mass (Cone approx.) |
0.081 kg |
| Mass (Cup approx.) |
0.039 kg |
| Condition |
New |
| Origin |
Japan / OEM quality |
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Specifications based on NSK inch series tapered bearing design standards.
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Applications
The NSK L44649 tapered roller bearing is commonly used in:
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Automotive wheel hubs — front and rear hubs
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Transmission & gearbox shafts
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Differential pinion shafts
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Trailer axles & hubs
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Industrial machinery spindles
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Heavy equipment (construction, agriculture)
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Gear reducers & conveyor systems
⚠️ Important: This bearing is a component of a set (inner cone + outer cup). For complete fitment, the pairing with L44610 is required. Always confirm dimensions and application requirements before ordering.
Related Brand Cross-Reference Part Numbers
Use these as alternate search terms or equivalent references for this bearing size:
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SKF: PER.L44649 / PER.L44649/10
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NTN: L44649 / L44610 (paired set)
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Timken: L44649/L44610
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FAG / INA / KOYO: Equivalent single-row tapered roller bearings in the same size family
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Aftermarket brands: Numerous equivalents available with matching dimensions (26.99×50.29×14.73 mm)
Important Fitment & Installation Notice
Before purchasing:
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Confirm the exact bearing size (d x D x T) matches your application.
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Ensure you have or order the matching outer ring (L44610) for complete use.
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Verify the application (hub, gearbox, axle, etc.) and load requirements before installation.
