LL648449/418 Extra-Light Series Tapered Roller Bearing

Space and Weight Optimization: The "LL" (Extra Light) cross-section allows for compact housing designs without sacrificing large bore capabilities.
Low Rotational Inertia: Reduced mass of the rolling elements allows for quicker acceleration and deceleration in dynamic machinery.
Precision Alignment: Maintains strict shaft centerlines to prevent vibration in large-diameter rotating equipment.
Superior Lubricant Flow: Open cage design ensures excellent circulation of oil or grease for superior cooling.

Technical Data

Technical Parameter	Metric Value
Inner Bore Diameter (d)	254.000 mm
Outer Diameter (D)	315.913 mm
Total Width (T)	31.750 mm
Precision Standard	Industrial P0 / High Precision Available

Product Specifications

Specification	Details
Item Type	Thin-Section / Light Series Tapered Roller Bearing
Model Number	LL648449/418
Bearing Design	Single Row Tapered
Material	Premium GCr15 High-Carbon Steel
Cage Material	Stamped Steel

Product Introduction

The LL648449/418 is a specialized extra-light (LL) series tapered roller bearing designed for applications where large shaft diameters are required, but radial space and weight must be strictly minimized. Measuring 254 x 315.913 x 31.75 mm, this thin-section bearing efficiently manages combined forces without adding unnecessary bulk to the machine assembly. Manufactured from ultra-pure bearing steel and honed to exacting tolerances, the LL648449/418 delivers exceptionally smooth rotation, reduced rotational inertia, and high stiffness, making it ideal for large precision scanners, rotary tables, and specialized aerospace equipment.

Applications

Large-scale precision rotary index tables.
Industrial radar and communication antenna mounts.
Specialized textile machinery and large robotic joints.

FAQ

Q: What does the "LL" stand for in the part number?
A: In inch-series tapered bearings, "LL" designates the "Extra Light" series, indicating a very thin cross-section relative to its bore size.
Q: Can this bearing withstand heavy shock loads?
A: Due to its thin section, it is optimized for moderate, continuous loads and high precision rather than extreme impact shocks found in heavy mining.

OEM & Custom Service

We cater to niche industrial equipment builders, offering customized greasing specifically for thin-section bearings, matched sets for precise preloading, and private label packaging.

Packing & Delivery

Protected with specialized low-viscosity rust preventatives, hermetically sealed in heavy foil, and secured in custom-cut foam inserts within heavy-duty export master cartons to prevent transit warping.