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TS (Single Row Tapered Roller Bearings) (Imperial) 33891-33821

TS (Single Row Tapered Roller Bearings) (Imperial) 33891-33821

The 33891-33821 is a single-row tapered roller bearing with a 2.0625″ bore and 3.75″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 29200 lbf radially and 4270 lbf in thrust, making it versatile for various applications.

Its open design allows for 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 replacement option. Ideal for industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 1.8 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

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Product Parameters

  • Part Number 33891-33821
  • Brand TFL
  • Interchangeable Timken
  • Size 2.0625" x 3.75" x 1.0938"
  • Bore Dia 2.0625"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.75"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.125"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.0938"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.090"
  • Cone Frontface Backing Diameter 2.32"
  • Cone Backface Backing Diameter 2.6"
  • Cup Frontface Backing Diameter 3.56"
  • Cup Backface Backing Diameter 3.35"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.04"
  • Effective Center Location -0.3"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 33891
  • Cup Part Number 33821
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 33800
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 29200 lbf
  • Static Radial Load 36200 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 7560 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4270 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 1.8 lb

Features

Performance Features of 33891-33821 Bearing

33891-33821 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 29,200 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 33891-33821 Bearing Engineered for Reliability?

33891-33821 Bearing features precise cone and cup dimensions, ensuring smooth operation under combined loads.
The tapered roller design distributes stress evenly, enhancing durability and reducing wear.
Its standard radial clearance allows for flexibility in different applications.
The bearing complies with RoHS and REACH standards, making it environmentally friendly.

Built for Durability: 33891-33821 Bearing

33891-33821 Bearing’s chrome steel construction provides excellent resistance to wear and fatigue.
The single-row design simplifies installation while maintaining high load capacity.
It operates efficiently within a wide temperature range, from -30° to 110°C.
The bearing’s standard lubrication requirement ensures consistent performance over time.

Steel vs Ceramic Bearings: Strengths of 33891-33821 Bearing

33891-33821 Bearing uses chrome steel for both rings and rollers, balancing cost and performance.
Its dynamic thrust rating of 4,270 lbf makes it suitable for demanding applications.
The steel cage offers reliable support, keeping rollers in place during operation.
This bearing is interchangeable with Timken models, providing flexibility for replacements.

Application

Industrial Uses of 33891-33821 Bearing
33891-33821 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The imperial sizing makes it a straightforward fit for North American industrial applications.

Where Is 33891-33821 Bearing Used?
You’ll often spot 33891-33821 Bearing in truck wheel hubs, where its durability and load capacity keep things running smoothly. Its chrome steel construction also makes it reliable for long-haul vehicles.

Built for Heavy-Duty Use: 33891-33821 Bearing
33891-33821 Bearing shines in mining equipment, where its robust design withstands harsh conditions. The open seal type allows for easy lubrication, extending its service life in dusty environments.

Automotive vs Aerospace: Applications of 33891-33821 Bearing
In automotive systems, 33891-33821 Bearing supports axles and transmissions, while its precision makes it suitable for aerospace landing gear components. The ABEC-1 rating ensures consistent performance in both fields.

Perfect Fit for Automation: 33891-33821 Bearing
33891-33821 Bearing works well in automated conveyor systems, where its tapered rollers manage radial and thrust loads efficiently. The steel cage adds stability, making it a dependable choice for high-use setups.

Q&A

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