56425-56649D TDO (Two-Row Double-Outer Race) (Imperial)

The 56425-56649D is a double-row tapered roller bearing with a 4.25″ bore and 6.4951″ outer diameter, built from sturdy chrome steel for heavy-duty use. It handles combined loads up to 88600 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its open design allows for easy lubrication, while the steel cage ensures durability under high stress. The bearing comes in standard radial clearance but can also be ordered in C3, C4, or C5 variations for specific needs.

This model is part of the 56000 series, ideal for industrial machinery or automotive applications where robust performance is key. Weighing 12.51 lb, it’s built to last while meeting RoHS and REACH standards for safety and compliance.

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Description

Features

Application

Q&A

Product Parameters

Part Number 56425-56649D
Brand TFL
Size 4.25" x 6.4951" x 1.4375"
Bore Dia 4.25"
Bore Dia Tolerance +0.001" to 0
Outer Dia 6.4951"
Outer Dia Tolerance +0.001" to 0
Double Cup Width 2.5"
Double Cup Width Tolerance +0.003" to -0.01
Cone Width 1.4375"
Cone Width Tolerance +0.002" to -0.01
Bearing Width Across Cups 3.2499"
Bearing Width Across Cups Tolerance +0.014" to -0.01"
Cup Backface ToClear Radius 0.03"
Cone Backface Backing Diameter 4.84"
Cup Frontface Backing Diameter 6.30"
Cage Cone Backface Clearance 0.14"
Dynamic Radial Load 88600 lbf
System of Measurement Inch
Type Bearing
Cone Part Number 56425
Cup Part Number 56649D
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Double Row
Seal Type Open
Cups Type Standard
Series 56000
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Rating(One Row 90 Million Revolutions) 13200 lbf
Dynamic Thrust Rating(90 Million Revolutions) 11200 lbf
Dynamic Radial Rating(Two Row 90 Million Revolutions) 23000 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 12.51 lb

Features

How Is 56425-56649D Bearing Engineered for Reliability?

56425-56649D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 88,600 lbf.
The steel cage maintains roller alignment, reducing friction and wear for extended service life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

What Makes 56425-56649D Bearing Suitable for High-Temperature Applications?

56425-56649D Bearing operates effectively within a temperature range of -30° to 110°C, making it suitable for demanding environments.
Its chrome steel rings and rollers resist thermal expansion, maintaining precision under heat.
The open seal design allows for proper lubrication, ensuring smooth operation even in high-temperature conditions.
This bearing is ideal for applications where temperature fluctuations are common.

Built for Durability: 56425-56649D Bearing

56425-56649D Bearing is constructed with high-quality chrome steel, offering excellent wear resistance and longevity.
Its double-row design distributes loads evenly, reducing stress on individual components.
The steel cage ensures proper roller spacing, minimising friction and enhancing performance.
With a dynamic radial rating of 23,000 lbf for two rows, it handles heavy loads with ease.

Steel vs Ceramic Bearings: Strengths of 56425-56649D Bearing

56425-56649D Bearing uses chrome steel for both rings and rollers, providing a balance of strength and cost-effectiveness.
This material choice ensures high load capacity and resistance to wear in industrial applications.
The steel cage further enhances durability, making it a reliable choice for heavy-duty use.
While ceramic bearings may offer lower weight, 56425-56649D Bearing excels in robustness and value.

Application

Industrial Uses of 56425-56649D Bearing
The 56425-56649D Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 56425-56649D Bearing supports large vehicle components like axles and wheel hubs, providing reliable performance under heavy loads. The inch sizing makes it a preferred choice for North American and UK markets.

For industrial automation, 56425-56649D Bearing’s tapered roller design offers stability in conveyor systems and robotic arms. The open seal type allows for easy lubrication, extending its service life in high-use scenarios.

Where Is 56425-56649D Bearing Used?
You’ll often find 56425-56649D Bearing in agricultural machinery, where its robust design handles the stresses of tillers and harvesters. The steel cage adds extra strength for long-term use.

In material handling systems, 56425-56649D Bearing ensures smooth operation of cranes and forklifts. Its standard radial clearance makes it versatile for various load conditions.

Built for Heavy-Duty Use: 56425-56649D Bearing
The 56425-56649D Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its high dynamic radial load capacity. The tapered rollers distribute stress evenly for consistent performance.

In marine applications, 56425-56649D Bearing withstands harsh conditions in ship propulsion systems. Its temperature range suits both cold and moderately warm environments.

Light-Duty vs Heavy-Duty: Best Uses for 56425-56649D Bearing
For light-duty tasks like small conveyor belts, 56425-56649D Bearing offers reliable support with minimal maintenance. Its ABEC-1 rating ensures adequate precision for general industrial use.

In heavy-duty scenarios like oil rigs, 56425-56649D Bearing’s two-row design provides the necessary strength. The chrome steel rollers resist wear even under constant stress.