TS (Single Row Tapered Roller Bearings) (Imperial) 3977X-3921XA

TS (Single Row Tapered Roller Bearings) (Imperial) 3977X-3921XA

The 3977X-3921XA is a single-row tapered roller bearing with a 2.36″ bore and 4.33″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 31200 lbf radially and 5570 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable alternative for replacements. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 2.7lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

The standard radial clearance and ABEC-1 rating ensure consistent performance. Its tapered roller design provides effective load distribution, enhancing longevity in demanding conditions.

Suitable for applications requiring precise alignment, such as gearboxes or axle systems. The chrome steel construction resists wear, maintaining performance over time.

Easy to install and maintain, this bearing is a practical solution for both new builds and repairs. Its compatibility with standard lubrication methods simplifies upkeep.

With a dynamic radial rating of 8090 lbf for 90 million revolutions, it offers reliable long-term service. The effective center location aids in proper alignment during installation.

Designed for combined loads, it excels in scenarios where radial and thrust forces are present. The tapered rollers ensure smooth rotation even under heavy stress.

Its dimensions and tolerances make it a precise fit for machinery requiring imperial-sized bearings. The steel cage adds strength without compromising flexibility.

Operating within a broad temperature range, it adapts to various working environments. The open seal type facilitates easy inspection and maintenance.

Compliant with industry standards, it meets safety and performance requirements. The chrome steel rollers and rings provide a balance of hardness and durability.

Perfect for heavy-duty applications, it combines strength with ease of use. The single-row design simplifies installation while maintaining high load capacity.

With a static radial load of 43000 lbf, it handles intense pressures without deformation. The standard cup type ensures compatibility with existing systems.

Its robust construction makes it suitable for high-stress environments like construction equipment. The tapered design efficiently manages both radial and axial forces.

The bearing’s weight and size strike a balance between sturdiness and practicality. Its compliance with environmental regulations ensures safe usage worldwide.

Ideal for replacements in industrial settings, it matches the performance of leading brands. The open design allows for straightforward lubrication and cleaning.

The chrome steel components resist corrosion, extending the bearing’s lifespan. Its dynamic thrust rating ensures reliable performance under varying load conditions.

Suitable for applications demanding precision and durability, such as conveyor systems. The steel cage maintains roller alignment, reducing wear over time.

With a cone width of 1.1″ and cup width of 0.94″, it fits snugly in designated spaces. The bearing’s design minimizes friction, promoting efficient operation.

Its compatibility with standard lubrication methods reduces maintenance complexity. The tapered rollers distribute loads evenly, preventing premature failure.

The bearing’s dimensions and tolerances ensure a precise fit in imperial-sized machinery. Its robust construction withstands the rigors of heavy industrial use.

Operating efficiently across a wide temperature range, it adapts to challenging conditions. The open seal type allows for easy monitoring and servicing.

Compliant with RoHS and REACH, it meets global safety and environmental standards. The chrome steel material offers excellent wear resistance and longevity.

Perfect for high-load scenarios, it delivers consistent performance under pressure. The single-row configuration simplifies installation and replacement processes.

With a dynamic radial load capacity of 31200 lbf, it handles substantial forces with ease. The standard radial clearance ensures smooth operation in most applications.

The bearing’s design effectively manages combined loads, making it versatile. Its tapered rollers reduce friction, enhancing efficiency and lifespan.

Suitable for use in automotive and industrial machinery, it offers reliable performance. The steel cage provides stability, keeping rollers aligned during operation.

Its weight and dimensions make it a practical choice for various mechanical systems. The open design facilitates straightforward maintenance and inspection.

The chrome steel construction resists wear, ensuring long-term reliability. Its compliance with industry standards guarantees quality and safety.

Ideal for demanding environments, it combines strength with ease of maintenance. The tapered roller design efficiently handles both radial and thrust loads.

With a static radial load rating of 43000 lbf, it withstands heavy pressures without issue. The standard cup type ensures broad compatibility with existing setups.

Its robust build makes it suitable for high-stress applications like mining equipment. The tapered rollers ensure even load distribution, reducing wear.

The bearing’s size and weight offer a balance of durability and practicality. Its adherence to environmental regulations ensures safe global usage.

Perfect for replacement parts, it matches the performance of top-tier brands. The open seal allows for easy lubrication and cleaning.

The chrome steel components resist rust, prolonging the bearing’s service life. Its dynamic thrust capacity ensures dependable operation under varied loads.

Suitable for precision applications, such as agricultural machinery. The steel cage maintains proper roller alignment, minimizing wear.

With a cone width of 1.1″ and cup width of 0.94″, it fits securely in allocated spaces. The bearing’s design reduces friction, improving efficiency.

Its compatibility with standard greasing methods lowers upkeep demands. The tapered rollers evenly distribute loads, preventing early failure.

The bearing’s measurements and tolerances guarantee an exact fit in imperial systems. Its sturdy construction endures heavy industrial conditions.

Functioning well in a wide temperature spectrum, it copes with tough environments. The open seal permits easy checks and servicing.

Meeting RoHS and REACH standards, it complies with international safety norms. The chrome steel material provides superior wear resistance and durability.

Excellent for high-load situations, it performs consistently under strain. The single-row arrangement eases installation and replacement.

With a dynamic radial load limit of 31200 lbf, it manages significant forces effortlessly. The standard radial clearance ensures smooth functioning in most uses.

The bearing’s structure effectively deals with combined loads, adding versatility. Its tapered rollers decrease friction, boosting efficiency and longevity.

Appropriate for automotive and industrial equipment, it delivers steady performance. The steel cage offers stability, maintaining roller alignment.

Its weight and size make it a sensible option for various mechanical setups. The open design enables simple maintenance and inspection.

The chrome steel build resists wear, ensuring lasting dependability. Its compliance with industry standards assures quality and safety.

Ideal for tough settings, it merges strength with low maintenance. The tapered roller design capably handles both radial and thrust forces.

With a static radial load capacity of 43000 lbf, it bears heavy pressures reliably. The standard cup type ensures wide compatibility with current systems.

Its rugged construction suits high-stress uses like construction machinery. The tapered rollers ensure uniform load distribution, lessening wear.

The bearing’s dimensions and weight provide a mix of sturdiness and usability. Its conformity to environmental rules ensures safe worldwide application.

Perfect for replacement components, it equals the performance of leading brands. The open seal facilitates easy greasing and cleaning.

The chrome steel parts resist corrosion, extending the bearing’s lifespan. Its dynamic thrust rating promises reliable performance under varying loads.

Suitable for precision needs, such as in conveyor belts. The steel cage keeps rollers aligned, reducing wear over time.

With a cone width of 1.1″ and cup width of 0.94″, it fits neatly in assigned spaces. The bearing’s layout cuts friction, enhancing efficiency.

Its compatibility with standard lubrication approaches simplifies maintenance. The tapered rollers spread loads evenly, avoiding premature wear.

The bearing’s sizes and tolerances ensure a perfect fit in imperial-measurement machinery. Its tough construction stands up to heavy industrial use.

Operating effectively across a broad temperature range, it adjusts to difficult conditions. The open seal type allows convenient monitoring and servicing.

Compliant with RoHS and REACH, it satisfies global safety and environmental criteria. The chrome steel material delivers outstanding wear resistance and durability.

Great for high-load cases, it provides steady performance under pressure. The single-row format streamlines installation and replacement.

With a dynamic radial load capability of 31200 lbf, it copes with substantial forces easily. The standard radial clearance guarantees smooth running in most applications.

The bearing’s design capably manages combined loads, increasing versatility. Its tapered rollers lower friction, improving efficiency and service life.

Appropriate for automotive and industrial uses, it offers consistent operation. The steel cage supplies stability, preserving roller alignment during use.

Its weight and proportions make it a practical selection for assorted mechanical arrangements. The open design allows uncomplicated maintenance and checks.

The chrome steel composition resists wear, ensuring prolonged reliability. Its adherence to industry standards confirms quality and safety.

Ideal for challenging conditions, it combines robustness with straightforward upkeep. The tapered roller design efficiently deals with both radial and thrust loads.

With a static radial load rating of 43000 lbf, it tolerates intense pressures reliably. The standard cup type ensures extensive compatibility with existing configurations.

Its sturdy build makes it apt for high-stress applications like mining gear. The tapered rollers assure even load distribution, decreasing wear.

The bearing’s size and mass offer a harmony of durability and practicality. Its obedience to environmental regulations ensures safe international usage.

Perfect for replacement parts, it matches the performance of premium brands. The open seal enables effortless lubrication and cleaning.

The chrome steel elements oppose rust, lengthening the bearing’s operational life. Its dynamic thrust capacity ensures trustworthy performance under varying loads.

Suitable for precision applications, such as in farming equipment. The steel cage sustains correct roller alignment, diminishing wear.

With a cone width of 1.1″ and cup width of 0.94″, it fits securely in designated areas. The bearing’s design minimizes friction, promoting efficiency.

Its compatibility with standard lubrication techniques reduces maintenance complexity. The tapered rollers distribute loads uniformly, preventing early failure.

The bearing’s dimensions and tolerances ensure an accurate fit in imperial-sized mechanisms. Its rugged construction withstands harsh industrial environments.

Performing well across a wide temperature range, it adapts to demanding conditions. The open seal permits easy inspection and servicing.

Meeting RoHS and REACH standards, it complies with worldwide safety and environmental norms. The chrome steel material provides excellent wear resistance and longevity.

Excellent for high-load scenarios, it delivers consistent performance under stress. The single-row setup simplifies installation and replacement.

With a dynamic radial load capacity of 31200 lbf, it handles substantial forces without trouble. The standard radial clearance ensures smooth operation in most uses.

The bearing’s structure effectively deals with combined loads, enhancing versatility. Its tapered rollers reduce friction, increasing efficiency and lifespan.

Appropriate for automotive and industrial machinery, it provides reliable performance. The steel cage offers stability, keeping rollers aligned during operation.

Its weight and size make it a practical choice for various mechanical systems. The open design allows straightforward maintenance and inspection.

The chrome steel construction resists wear, ensuring long-term dependability. Its compliance with industry standards guarantees quality and safety.

Ideal for demanding environments, it combines strength with ease of maintenance. The tapered roller design efficiently manages both radial and thrust loads.

With a static radial load rating of 43000 lbf, it withstands heavy pressures reliably. The standard cup type ensures broad compatibility with existing setups.

Its robust build makes it suitable for high-stress applications like construction equipment. The tapered rollers ensure even load distribution, reducing wear.

The bearing’s size and weight offer a balance of durability and practicality. Its adherence to environmental regulations ensures safe global usage.

Perfect for replacement parts, it matches the performance of top-tier brands. The open seal allows for easy lubrication and cleaning.

The chrome steel components resist rust, prolonging the bearing’s service life. Its dynamic thrust capacity ensures dependable operation under varied loads.

Suitable for precision applications, such as agricultural machinery. The steel cage maintains proper roller alignment, minimizing wear.

With a cone width of 1.1″ and cup width of 0.94″, it fits securely in allocated spaces. The bearing’s design reduces friction, improving efficiency.

Its compatibility with standard greasing methods lowers upkeep demands. The tapered rollers evenly distribute loads, preventing early failure.

The bearing’s measurements and tolerances guarantee an exact fit in imperial systems. Its sturdy construction endures heavy industrial conditions.

Functioning well in a wide temperature spectrum, it copes with tough environments. The open seal permits easy checks and servicing.

Meeting RoHS and REACH standards, it complies with international safety norms. The chrome steel material provides superior wear resistance and durability.

Excellent for high-load situations, it performs consistently under strain. The single-row arrangement eases installation and replacement.

With a dynamic radial load limit of 31200 lbf, it manages significant forces effortlessly. The standard radial clearance ensures smooth functioning in most uses.

The bearing’s structure effectively deals with combined loads, adding versatility. Its tapered rollers decrease friction, boosting efficiency and longevity.

Appropriate for automotive and industrial equipment, it delivers steady performance. The steel cage offers stability, maintaining roller alignment.

Its weight and size make it a sensible option for various mechanical setups. The open design enables simple maintenance and inspection.

The chrome steel build resists wear, ensuring lasting dependability. Its compliance with industry standards assures quality and safety.

Ideal for tough settings, it merges strength with low maintenance. The tapered roller design capably handles both radial and thrust forces.

With a static radial load capacity of 43000 lbf, it bears heavy pressures reliably. The standard cup type ensures wide compatibility with current systems.

Its rugged construction suits high-stress uses like construction machinery. The tapered rollers ensure uniform load distribution, lessening wear.

The bearing’s dimensions and weight provide a mix of sturdiness and usability. Its conformity to environmental rules ensures safe worldwide application.

Perfect for replacement components, it equals the performance of leading brands. The open seal facilitates easy greasing and cleaning.

The chrome steel parts resist corrosion, extending the bearing’s lifespan. Its dynamic thrust rating promises reliable performance under varying loads.

Suitable for precision needs, such as in conveyor belts. The steel cage keeps rollers aligned, reducing wear over time.

With a cone width of 1.1″ and cup width of 0.94″, it fits neatly in assigned spaces. The bearing’s layout cuts friction, enhancing efficiency.

Its compatibility with standard lubrication approaches simplifies maintenance. The tapered rollers spread loads evenly, avoiding premature wear.

The bearing’s sizes and tolerances ensure a perfect fit in imperial-measurement machinery. Its tough construction stands up to heavy industrial use.

Operating effectively across a broad temperature range, it adjusts to difficult conditions. The open seal type allows convenient monitoring and servicing.

Compliant with RoHS and REACH, it satisfies global safety and environmental criteria. The chrome steel material delivers outstanding wear resistance and durability.

Great for high-load cases, it provides steady performance under pressure. The single-row format streamlines installation and replacement.

With a dynamic radial load capability of 31200 lbf, it copes with substantial forces easily. The standard radial clearance guarantees smooth running in most applications.

The bearing’s design capably manages combined loads, increasing versatility. Its tapered rollers lower friction, improving efficiency and service life.

Appropriate for automotive and industrial uses, it offers consistent operation. The steel cage supplies stability, preserving roller alignment during use.

Its weight and proportions make it a practical selection for assorted mechanical arrangements. The open design allows uncomplicated maintenance and checks.

The chrome steel composition resists wear, ensuring prolonged reliability. Its adherence to industry standards confirms quality and safety.

Ideal for challenging conditions, it combines robustness with straightforward upkeep. The tapered roller design efficiently deals with both radial and thrust loads.

With a static radial load rating of 43000 lbf, it tolerates intense pressures reliably. The standard cup type ensures extensive compatibility with existing configurations.

Its sturdy build makes it apt for high-stress applications like mining gear. The tapered rollers assure even load distribution, decreasing wear.

The bearing’s size and mass offer a harmony of durability and practicality. Its obedience to environmental regulations ensures safe international usage.

Perfect for replacement parts, it matches the performance of premium brands. The open seal enables effortless lubrication and cleaning.

The chrome steel elements oppose rust, lengthening the bearing’s operational life. Its dynamic thrust capacity ensures trustworthy performance under varying loads.

Suitable for precision applications, such as in farming equipment. The steel cage sustains correct roller alignment, diminishing wear.

With a cone width of 1.1″ and cup width of 0.94″, it fits securely in designated areas. The bearing’s design minimizes friction, promoting efficiency.

Its compatibility with standard lubrication techniques reduces maintenance complexity. The tapered rollers distribute loads uniformly, preventing early failure.

The bearing’s dimensions and tolerances ensure an accurate fit in imperial-sized mechanisms. Its rugged construction withstands harsh industrial environments.

Performing well across a wide temperature range, it adapts to demanding conditions. The open seal permits easy inspection and servicing.

Meeting RoHS and REACH standards, it complies with worldwide safety and environmental norms. The chrome steel material provides excellent wear resistance and longevity.

Excellent for high-load scenarios, it delivers consistent performance under stress. The single-row setup simplifies installation and replacement.

With a dynamic radial load capacity of 31200 lbf, it handles substantial forces without trouble. The standard radial clearance ensures smooth operation in most uses.

The bearing’s structure effectively deals with combined loads, enhancing versatility. Its tapered rollers reduce friction, increasing efficiency and lifespan.

Appropriate for automotive and industrial machinery, it provides reliable performance. The steel cage offers stability, keeping rollers aligned during operation.

Its weight and size make it a practical choice for various mechanical systems. The open design allows straightforward maintenance and inspection.

The chrome steel construction resists wear, ensuring long-term dependability. Its compliance with industry standards guarantees quality and safety.

Ideal for demanding environments, it combines strength with ease of maintenance. The tapered roller design efficiently manages both radial and thrust loads.

With a static radial load rating of 43000 lbf, it withstands heavy pressures reliably. The standard cup type ensures broad compatibility with existing setups.

Its robust build makes it suitable for high-stress applications like construction equipment. The tapered rollers ensure even load distribution, reducing wear.

The bearing’s size and weight offer a balance of durability and practicality. Its adherence to environmental regulations ensures safe global usage.

Perfect for replacement parts, it matches the performance of top-tier brands. The open seal allows for easy lubrication and cleaning.

The chrome steel components resist rust, prolonging the bearing’s service life. Its dynamic thrust capacity ensures dependable operation under varied loads.

Suitable for precision applications, such as agricultural machinery. The steel cage maintains proper roller alignment, minimizing wear.

With a cone width of 1.1″ and cup width of 0.94″, it fits securely in allocated spaces. The bearing’s design reduces friction, improving efficiency.

Its compatibility with standard greasing methods lowers upkeep demands. The tapered rollers evenly distribute loads, preventing early failure.

The bearing’s measurements and tolerances guarantee an exact fit in imperial systems. Its sturdy construction endures heavy industrial conditions.

Functioning well in a wide temperature spectrum,

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Product Parameters

  • Part Number 3977X-3921XA
  • Brand TFL
  • Interchangeable Timken
  • Size 2.3617" x 4.3301" x 1.1713"
  • Bore Dia 2.3617"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.3301"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.1024"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1713"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.02"
  • Cone Frontface Backing Diameter 2.68"
  • Cone Backface Backing Diameter 2.83"
  • Cup Frontface Backing Diameter 4.13"
  • Cup Backface Backing Diameter 3.94"
  • Cage Cone Frontface Clearance 0.16"
  • Cage Cone Backface Clearance 0.06"
  • Effective Center Location -0.18"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3977X
  • Cup Part Number 3921XA
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3900
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 31200 lbf
  • Static Radial Load 43000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 8090 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 5570 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 2.700 lb

Features

Performance Features of 3977X-3921XA Bearing

3977X-3921XA Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 31,200 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

3977X-3921XA Bearing requires lubrication, ensuring smooth operation and reduced wear over time.
Its standard radial clearance allows for flexibility in different industrial applications.

Application

Common Applications of 3977X-3921XA Bearing
3977X-3921XA Bearing is widely used in industrial machinery, especially in heavy-duty equipment like gearboxes and conveyor systems. Its tapered roller design handles combined loads efficiently, making it suitable for high-stress environments.

In automotive applications, 3977X-3921XA Bearing is often found in wheel hubs and differential systems, where its durability ensures reliable performance. The imperial sizing makes it a convenient choice for North American vehicle models.

For construction equipment, 3977X-3921XA Bearing’s chrome steel construction provides long-lasting support in excavators and cranes. The open design allows for easy lubrication, extending its service life in demanding conditions.

Where Is 3977X-3921XA Bearing Used?
3977X-3921XA Bearing is commonly seen in agricultural machinery, such as tractors and harvesters, where it handles heavy radial and thrust loads. Its robust design ensures smooth operation even in dusty or muddy conditions.

In mining equipment, 3977X-3921XA Bearing supports crushers and screens, thanks to its ability to withstand high-impact loads. The steel cage adds extra strength, making it a reliable choice for harsh environments.

Built for Heavy-Duty Use: 3977X-3921XA Bearing
3977X-3921XA Bearing excels in railway applications, particularly in axle boxes where combined loads are common. Its tapered rollers distribute stress evenly, reducing wear over time.

For marine equipment, 3977X-3921XA Bearing’s corrosion-resistant materials make it ideal for ship propulsion systems. The standard radial clearance ensures consistent performance in varying temperatures.

Automotive vs Aerospace: Applications of 3977X-3921XA Bearing
In automotive systems, 3977X-3921XA Bearing is trusted for its reliability in transmissions and drivetrains. The ABEC-1 rating balances precision and cost-effectiveness for mass production.

While less common in aerospace, 3977X-3921XA Bearing can be found in ground support equipment like tow tractors. Its inch measurements align with many US-made components.

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