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TS (Single Row Tapered Roller Bearings) (Metric) 30303

TS (Single Row Tapered Roller Bearings) (Metric) 30303

The A4059-A4138-B is a single-row tapered roller bearing with a flange, measuring 0.5901″ x 1.3775″ x 0.4326″. Made from durable chrome steel, it handles combined loads with a dynamic radial load capacity of 2960 lbf.

Its flanged cup design ensures secure mounting, while the open seal allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for applications like automotive axles or industrial gearboxes where combined loads are common.

Weighing just 0.100 lb, it’s lightweight yet robust. Compliant with RoHS and REACH standards, it meets ABEC-1 precision requirements for reliable performance.

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Product Parameters

  • Part Number 30303
  • Brand TFL
  • Interchangeable Brand Timken
  • System of Measurement Metric
  • Type Bearing
  • Sizes 17 mm x 47 mm x 15.25 mm
  • Cone Part Number X30303
  • Cup Part Number Y30303
  • Bore Dia 17 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 47 mm
  • Outer Dia Tolerance -0.014mm to 0
  • Cone Width 14 mm
  • Cone Width Tolerance -0.1mm to 0
  • Cup Width 12 mm
  • Cup Width Tolerance -0.15mm to 0
  • Width 15.25 mm
  • Width Tolerance +0.2mm to 0
  • Cone Backface ToClear Radius 1.02 mm
  • Cup Backface ToClear Radius 1.02 mm
  • Cone Frontface Backing Diameter 21.5 mm
  • Cone Backface Backing Diameter 22.5 mm
  • Cup Frontface Backing Diameter 43.43 mm
  • Cup Backface Backing Diameter 41.40 mm
  • Cage Cone Frontface Clearance 2.8 mm
  • Cage Cone Backface Clearance -0.8 mm
  • Effective Center Location -4.8 mm
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 30303
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 7358 lbf
  • Static Radial Load 6390 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 1908 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 931.5 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 0.22 lb

Features

Why Choose A4059-A4138-B Bearing for Precision Tasks?

A4059-A4138-B Bearing features a tapered roller design, ideal for handling combined loads with precision.
Its chrome steel construction ensures durability and resistance to wear in demanding applications.

The flanged cup design provides secure mounting, enhancing stability during operation.
With a dynamic radial load capacity of 2960 lbf, it delivers reliable performance under stress.

A4059-A4138-B Bearing operates efficiently within a temperature range of -30° to 110°C.
Its standard radial clearance and ABEC-1 rating make it suitable for various industrial uses.

Application

Industrial Uses of A4059-A4138-B Bearing
A4059-A4138-B Bearing is commonly used in industrial gearboxes, where its tapered roller design efficiently handles combined radial and thrust loads. The flanged cup ensures secure mounting, reducing misalignment risks in high-vibration environments.

What Makes A4059-A4138-B Bearing a Preferred Choice?
In automotive differentials, A4059-A4138-B Bearing’s chrome steel construction offers durability under heavy loads. Its inch sizing makes it a straightforward replacement for Timken equivalents in classic car restorations.

Built for Heavy-Duty Use: A4059-A4138-B Bearing
A4059-A4138-B Bearing excels in conveyor systems, where its steel cage withstands continuous operation. The open design simplifies lubrication, extending service life in dusty or humid conditions.

Automotive vs Industrial: Applications of A4059-A4138-B Bearing
A4059-A4138-B Bearing adapts well to both truck wheel hubs and agricultural machinery, thanks to its balanced load capacity. The flange adds stability in applications where space constraints exist.

Perfect Fit for Automation: A4059-A4138-B Bearing
A4059-A4138-B Bearing works smoothly in robotic arms, where precise movement is key. Its standard radial clearance ensures consistent performance without frequent adjustments.

Q&A

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