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TS (Single Row Tapered Roller Bearings) (Imperial) EE129120X-129172

TS (Single Row Tapered Roller Bearings) (Imperial) EE129120X-129172

The EE129120X-129172 is a single-row tapered roller bearing with a 12″ bore and 17.246″ outer diameter, built from sturdy chrome steel for heavy-duty use. It handles combined loads up to 201,000 lbf radially and 37,200 lbf thrust, making it suitable for demanding applications.

Its open design allows for easy lubrication, while the steel cage ensures durability under high stress. The bearing operates smoothly in temperatures ranging from -30°C to 110°C, ideal for industrial environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Perfect for machinery like gearboxes or conveyors where both radial and thrust loads are present.

Weighing 72.90 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number EE129120X-129172
  • Brand TFL
  • Interchangeable Timken
  • Size 12" x 17.246" x 3"
  • Bore Dia 12"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 17.246"
  • Outer Dia Tolerance +0.002" to 0
  • Cone Width 3.0312"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 2.125"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 3"
  • Width Tolerance +0.014" to -0.01"
  • Cone Backface ToClear Radius 0.25"
  • Cup Backface ToClear Radius 0.190"
  • Cone Frontface Backing Diameter 14.06"
  • Cone Backface Backing Diameter 13.15"
  • Cup Frontface Backing Diameter 16.30"
  • Cup Backface Backing Diameter 15.98"
  • Cage Cone Frontface Clearance -0.02"
  • Cage Cone Backface Clearance 0.56"
  • Effective Center Location 0.29"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number EE129120X
  • Cup Part Number 129172
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 129000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 201000 lbf
  • Static Radial Load 401000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 52200 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 37200 lbf
  • Lubrication Required
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • Radial Clearance Standard (Available in C3/C4/C5)
  • RoHS Compliant
  • REACH Compliant
  • Weight 72.90 lb

Features

Performance Features of EE129120X-129172 Bearing

EE129120X-129172 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 201,000 lbf, ensuring reliable performance in heavy-duty applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environments.

How Is EE129120X-129172 Bearing Engineered for Reliability?

EE129120X-129172 Bearing features a single-row tapered roller design, ideal for handling combined radial and thrust loads.
The chrome steel construction provides durability, while the standard radial clearance ensures smooth operation.
Its dynamic thrust rating of 37,200 lbf at 90 million revolutions highlights its long-term reliability.
This bearing is interchangeable with Timken models, offering flexibility in replacements.

Built for Durability: EE129120X-129172 Bearing

EE129120X-129172 Bearing’s robust chrome steel components withstand high static radial loads up to 401,000 lbf.
The tapered roller design distributes loads evenly, reducing stress on individual components.
With an ABEC-1 rating, it balances precision and cost-effectiveness for industrial applications.
Its open seal type allows for easy lubrication, maintaining performance over time.

Steel vs Ceramic Bearings: Strengths of EE129120X-129172 Bearing

EE129120X-129172 Bearing uses chrome steel for both rollers and rings, providing excellent strength and wear resistance.
The steel cage ensures stability under heavy loads, making it suitable for demanding industrial use.
Unlike ceramic bearings, this model offers a cost-effective solution without compromising on load capacity.
Its standard radial clearance and lubrication requirements make it versatile for various applications.

Application

Industrial Uses of EE129120X-129172 Bearing
EE129120X-129172 Bearing is commonly used in heavy-duty industrial equipment like mining machinery and construction gear, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability even in harsh operating conditions.

In automotive applications, EE129120X-129172 Bearing supports large vehicle components such as axles and wheel hubs, providing reliable performance under heavy radial and thrust loads. Its imperial sizing makes it a preferred choice for North American automotive manufacturers.

For wind turbine systems, EE129120X-129172 Bearing’s robust design helps manage the high stresses encountered in rotor assemblies. The steel cage enhances stability, making it suitable for long-term use in renewable energy installations.

Where Is EE129120X-129172 Bearing Used?
EE129120X-129172 Bearing finds its place in agricultural machinery, particularly in tractors and harvesters, where its ability to handle uneven loads is crucial. The open seal design allows for easy lubrication maintenance.

In railway applications, EE129120X-129172 Bearing ensures smooth operation in freight car wheel sets, thanks to its high dynamic radial load capacity. The standard radial clearance option provides flexibility for different operational needs.

Built for Heavy-Duty Use: EE129120X-129172 Bearing
EE129120X-129172 Bearing is ideal for steel mills, where its tapered rollers withstand extreme temperatures and heavy loads. The ABEC-1 rating ensures consistent performance without unnecessary precision costs.

For oil and gas equipment, EE129120X-129172 Bearing’s chrome steel rollers offer reliable service in drilling rigs and pumps. The inch measurements simplify replacements in older machinery still using imperial standards.

Automotive vs Aerospace: Applications of EE129120X-129172 Bearing
In automotive settings, EE129120X-129172 Bearing is trusted for truck differentials, balancing durability and load capacity. Its compatibility with Timken models makes it a versatile option for repairs.

For aerospace ground support equipment, EE129120X-129172 Bearing provides the necessary strength for heavy lifting devices. The temperature range suits both indoor and outdoor operational environments.

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