Tapered Roller Bearings – Double Tapered Cones – Imperial

Tapered Roller Bearings Product Introduction

**TIMKEN Tapered Roller Bearings – Double Cones (Imperial Series 271): Engineered for Heavy-Duty Performance**

For over a century, TIMKEN has set the global standard for tapered roller bearing technology, delivering unmatched reliability in the most demanding industrial and automotive applications. Among its robust portfolio, the **TIMKEN Double Tapered Cones (Imperial Series 271)** stand out as a high-performance solution designed to handle heavy radial and thrust loads simultaneously. These precision-engineered bearings combine advanced metallurgy, optimized geometry, and rigorous manufacturing tolerances to extend equipment life, reduce maintenance costs, and enhance operational efficiency across critical machinery.

### **Technical Features & Design Advantages**
The **Series 271 Double Tapered Cones** are crafted for applications requiring superior load distribution and alignment flexibility. Key features include:

– **Dual-Row Design**: Two independent cone assemblies enable balanced load sharing, accommodating combined radial and axial forces in a compact footprint.
– **Premium Steel Alloys**: Manufactured from ultra-clean, case-hardened steel for exceptional fatigue resistance and durability under shock loads or high-speed conditions.
– **Precision Ground Surfaces**: Optimized roller profiles and raceway finishes minimize friction, heat generation, and wear, even in misalignment scenarios.
– **Interchangeability**: Conforms to imperial dimensions for seamless integration with existing systems, reducing downtime during replacements.
– **Sealing & Lubrication Options**: Compatible with TIMKEN’s advanced sealing solutions (e.g., labyrinth or contact seals) and specialty greases for contaminated environments.

### **Performance Benefits**
TIMKEN’s double cones excel where single-row bearings fall short, offering:
– **Higher Load Capacity**: The dual-row configuration distributes loads evenly, making them ideal for applications with oscillating or variable force directions.
– **Extended Service Life**: Reduced stress concentrations and improved lubrication retention lead to longer intervals between overhauls.
– **Versatility**: Performs reliably in both slow-speed, high-torque environments (e.g., conveyor pulleys) and high-speed applications (e.g., gearbox systems).

### **Typical Applications**
The **Series 271 Double Tapered Cones** are widely specified in heavy industries, including:
– **Industrial Machinery**: Crushers, extruders, and mining equipment where shock loads and misalignment are common.
– **Automotive Systems**: Wheel hubs, differentials, and drivetrains in commercial vehicles and off-highway equipment.
– **Precision Equipment**: Wind turbine gearboxes, rolling mill stands, and pulp/paper processing machinery requiring sustained performance under extreme conditions.

Engineered to exceed industry benchmarks, TIMKEN’s Double Tapered Roller Bearings deliver the strength, precision, and longevity needed to keep critical systems running smoothly. Whether in harsh environments or precision-driven applications, they represent a proven investment in reduced downtime and total cost of ownership.

*For specific dimensions, load ratings, or customization options, consult TIMKEN’s engineering resources or product catalogs.*

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Part Number Series d - Cone Bore B - Double Cone Width C1 - Dynamic Radial Rating(1 million revolutions) C0 - Static Radial Rating
EE130904D
130000
228.600 mm
127.000 mm
796000 N
1400000 N
EE234157D
234000
393.7 mm
120.650 mm
1090000 N
2010000 N
EE329118D
329000
298.450 mm
131.763 mm
1080000 N
2060000 N
EE132081D
132000
203.2 mm
95.250 mm
528000 N
900000 N
EE234161D
234000
406.400 mm
120.650 mm
1090000 N
2010000 N
EE329119D
329000
304.648 mm
131.763 mm
1080000 N
2060000 N
EE134102D
134000
260.350 mm
107.950 mm
679000 N
1330000 N
EE243193D
243000
489.026 mm
152.400 mm
1470000 N
3660000 N
EE420750D
420000
190.5 mm
152.400 mm
1100000 N
1820000 N
EE135111DGW
135000
279.4 mm
127.000 mm
873000 N
1670000 N
EE275106D
275000
266.7 mm
130.175 mm
883000 N
1600000 N
EE420800D
420000
203.2 mm
152.400 mm
1100000 N
1820000 N
EE135111DW
135000
279.4 mm
127.000 mm
873000 N
1670000 N
EE275109D
275000
276.225 mm
130.175 mm
883000 N
1600000 N
EE138131D
138000
330.302 mm
114.300 mm
734000 N
1590000 N
EE275109DGW
275000
276.225 mm
130.175 mm
883000 N
1600000 N
EE161362D
160000
346.075 mm
95.250 mm
548000 N
1110000 N
EE275109DW
275000
276.225 mm
130.175 mm
883000 N
1600000 N
EE161403D
160000
356.387 mm
101.600 mm
548000 N
1110000 N
EE280625D
280000
158.750 mm
114.300 mm
603000 N
867000 N