TIMKEN Bearing LL641148 - LL641111

This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of TIMKEN Bearing LL641148 - LL641111

TIMKEN Bearing LL641148 - LL641111

Specifications

Series

LL641100

Cone Part Number

LL641148

Cup Part Number

LL641111

Design Unit

Inch

Bearing Weight

8 lb3.6 Kg

Cage Material

Stamped Steel

Dimensions

d – Bore

8.0110 in203.479 mm

D – Cup Outer Diameter

10.2812 in261.142 mm

B – Cone Width

1.2500 in31.750 mm

C – Cup Width

0.8438 in21.433 mm

T – Bearing Width

1.1250 in28.575 mm

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius1

0.06 in1.520 mm

r – Cup Backface “To Clear” Radius2

0.06 in1.52 mm

da – Cone Frontface Backing Diameter

8.39 in213 mm

db – Cone Backface Backing Diameter

8.43 in214 mm

Da – Cup Frontface Backing Diameter

10.02 in254.51 mm

Db – Cup Backface Backing Diameter

9.80 in248.92 mm

Ab – Cage-Cone Frontface Clearance

0 in0 mm

Aa – Cage-Cone Backface Clearance

0.09 in2.3 mm

a – Effective Center Location3

0.62 in15.7 mm

Basic Load Ratings

C90 – Dynamic Radial Rating (90 million revolutions)4

11600 lbf51400 N

C1 – Dynamic Radial Rating (1 million revolutions)5

44600 lbf198000 N

C0 – Static Radial Rating

85300 lbf379000 N

Ca90 – Dynamic Thrust Rating (90 million revolutions)6

8090 lbf36000 N

Factors

K – Factor7

1.43

e – ISO Factor8

0.41

Y – ISO Factor9

1.47

G1 – Heat Generation Factor (Roller-Raceway)

498.4

G2 – Heat Generation Factor (Rib-Roller End)

221.2

Cg – Geometry Factor10

0.138

Product description of TIMKEN Bearing LL641148 - LL641111

TIMKEN Bearing LL641148 - LL641111, Tapered Roller Bearings TDI (Tapered Double Inner) Imperial. Timken® tapered roller bearing assemblies are precisely designed to manage both radial and axial loads, even in the most unforgiving conditions.Double- or two-row Timken® tapered roller bearings feature double cups and two single cones. They are available in a variety of configurations for general industrial and automotive applications.

This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the inner race assembly and the outer race. It is typically mounted in opposing pairs on a shaft.

Size Range
ID 7.937 to 1562.100 mm (0.31225 to 61.5000 in.)
OD 31.991 to 1806.575 mm (1.2595 to 71.1250 in.)

TIMKEN Bearing LL641148 - LL641111, Tapered Roller Bearings TDI (Tapered Double Inner) Imperial. Design Attributes
Single cone and cup
One-piece pressed steel cage retains rollers on the cone and spaces them evenly
Pin type cages also available

Applications
Vehicle front wheels
Differential and pinion configurations
Conveyor rolls
Machine tool spindles
Trailer wheels
2TS-IM assemblies are comprised of two single-row bearings with an inner and outer ring spacer. In some applications, a shoulder in the bearing housing replaces the outer ring spacer.

Design Attributes:
Steel spacers are used to create Bench End Play (BEP) or Preload (BPL) in the bearing assembly.
Available with or without spacers.
Spacers preset during manufacture.

Applications:
Gear reduction units
Industrial machines
TIMKEN Bearing LL641148 - LL641111, Tapered Roller Bearings TDI (Tapered Double Inner) Imperial. This composite tapered roller bearing has outer and inner races, each of which is built up by a method which includes forming annular inner and outer tapered or frustoconical load-bearing roller path members formed from unheat-treated butt-welded strips of steel, subsequently heat-treating and final grinding these annular members, welding to the large end of the annular inner roller path member a finished side ring, forming an annular roller retainer with circumferentially spaced pocket openings, assembling a complement of tapered rollers in these circumferentially spaced pocket openings of this annular roller retainer, these tapered rollers having spherical surfaces on their larger diameter ends, placing the thus-formed assembly on the thus partially built-up inner race, and welding a smaller side ring to the other end of the annular inner roller path member. These tapered rollers engage a tapered or frustoconical annular inner load-bearing surface on the annular central roller path member of this composite tapered roller bearing inner race, the larger diameter side ring of which has an annular inner surface of spherical curvature mating with the spherically curved surfaces on the larger ends of the tapered rollers. Before welding, the inner roller path member and the side rings are preferably case hardened in the areas actually engaged by the side and end surfaces respectively of the rollers, the remaining area of each ring not so engaged being selectively excluded from the case hardening. This enables the bearing components to be case hardened and precision ground and honed before assembling and welding, preferably by electronic or laser welding to precisely localize the welds.

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Literature & catalogs

TIMKEN -LUBRICATION
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TIMKEN -TYPE- TDI
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TIMKEN-TAPERED ROLLER BEARING CAGES
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TIMKEN-TYPE- TS
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Videos

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Timken Tricks of the Trade – Installing a Timken® Set Right® Bearing

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