Product Description

1. Double row inch taper roller bearing NA48990SW 48920D  with size 152.4×211.138×92.075 mm 
 

Product 152.4×211.138×92.075 mm  double row inch taper roller bearing NA48990SW 48920D
Precision Rating ABEC1,ABEC3,ABEC
Clearance C0,C2,C3,C4,C5 is available
Sealed Cap  Rubber or Metal
Paypal  Acceptable
OEM Accept
Vibration Level code V1,V2.V3
Material Gcr15
Seals Type ZZ/ZRS.RZ/RS. Open

Bore Size

Outside Diameter

Thinckess

152.4  MM

211.1   MM

92.1   mm

Number of Row Double
Regular export packing Plastic drum+White box+ carton
  industrial packaging or as your requiremen.
MOQ 1 pcs
Delivery Time 3-7 days after receiving your payment  
Payment Terms L/C,T/T,Western Union,MoneyGram,Paypal

2. We also can offer following bearings . 
 

Boundary Dimensions

Designations

Mass

d

D

T

B

kg

mm

mm

mm

mm

133.35

196.85

193.675

193.675

K67390D/K67322-K67322D

20.2

177.8

247.65

192.088

192.088

K67791DGW/K67720-K67721D

28.6

187.325

269.875

211.138

211.138

KM238849D/KM238810-KM238810D

41.5

190.5

266.7

187.325

188.912

67885D/67820-67820D

32.9

198.438

284.162

225.425

225.425

M240648DD/M240611-M240611D

32.9

203.2

317.5

266.7

266.7

938D

81.8

228.6

311.15

2XD

148

241.478

349.148

228.6

228.6

EE127097D/12D

71.9

 

349.148

228.6

228.6

KEE127097D/K127135-K127136D

71.9

244.475

327.571

193.675

193.675

KLM247748DW/KLM247710-KLM247710D

42.7

 

327.571

193.675

193.675

LM247748DW/LM247710-LM247710D

42.7

254

358.775

269.875

269.875

M249748D/M249710-M249710D

88.9

 

358.775

269.875

269.875

M249748DW/M249710-M249710D

88.9

 

358.775

269.875

269.875

K3M249748DW/K3M249710-K3M249710D-3

88.9

260.35

422.275

314.325

317.5

HM252348D/HM252310-HM252310D

182

266.7

355.6

230.188

228.6

KLM451349DW/KLM451310-KLM451310D

65.3

 

355.6

230.188

228.6

LM451349DW/LM451310-LM451310D

63.9

 

355.6

230.188

228.6

K76589/K76520-K76520D

 

269.875

381

282.575

282.575

M252349DW/M252310-M252310D

105

276.225

393.7

269.875

269.875

3806/276X4

105

279.4

393.7

269.875

269.875

KEE135111DW/K135155-K135156D

103

 

393.7

269.875

269.875

EE135111D/13D

103

 

393.7

269.875

269.875

EE135111DW/13DW/HEC9

103

 

393.7

269.875

269.875

EE135111DW/13DW

103

288.925

406.4

298.45

298.45

M255449DW/M255410-M255410D

125

 

406.4

298.45

298.45

M255449D/M255410-M255410D

125

292.1

422.275

269.875

269.875

EE330116D/33D

126

300.038

422.275

311.15

311.15

HM256849D/HM256810-HM256810D

142

304.648

438.048

280.99

279.4

M757448D/M757410-M757410D

130

 

438.048

280.99

279.4

M757448DW/M757410-M757410D

130

304.8

419.1

269.875

269.875

M257149D/M257110-M257110D

112

 

482.6

365.125

377.825

3806/304.8

266

 

495.3

342.9

342.9

3806/304.8-1

243

 

501.65

336.55

336.55

3806/304.8-2

255

304.902

412.648

266.7

266.7

M257248DW/M257210-M257210D

102

305

438.048

280.99

279.4

M757449DW/M757410-M757410D

129

317.5

422.275

269.875

269.875

LM258648DW/LM259610-LM258610D

104

3. If    need any bearings ,  please contact with us . 

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Rolling Body: Roller Bearings
The Number of Rows: Double
Outer Dimension: Small and Medium-Sized (60-115mm)
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tapered roller bearing

What Advantages do Tapered Roller Bearings Offer Compared to Other Bearing Types?

Tapered roller bearings offer several advantages that make them a preferred choice in various applications compared to other bearing types. These advantages stem from their unique design and capabilities. Here’s a look at the benefits of tapered roller bearings:

  • High Load-Carrying Capacity:

Tapered roller bearings can handle both radial and axial loads simultaneously, making them suitable for applications with combined loads. Their conical geometry allows for effective load distribution, enabling them to support heavy loads without premature wear.

  • Efficient Axial Load Handling:

Tapered roller bearings excel at managing axial (thrust) loads in one direction. This capability is crucial in applications where axial loads are present, such as automotive transmissions or industrial machinery.

  • Reduced Friction and Heat Generation:

The conical shape of the rollers and the matching raceways result in point contact, reducing friction and minimizing heat generation. This efficiency contributes to improved overall performance and energy savings.

  • Adjustable Clearance and Preload:

Tapered roller bearings often allow for adjustable internal clearance or preload. This feature enables fine-tuning of the bearing’s play, optimizing performance and extending the bearing’s lifespan.

  • High Precision:

Tapered roller bearings are available in various precision classes to meet different application requirements. Their precision makes them suitable for applications demanding accurate motion control and positioning.

  • Versatility:

Tapered roller bearings are used in a wide range of industries and applications, from automotive and heavy machinery to aerospace and industrial equipment. Their ability to handle diverse loads and conditions contributes to their versatility.

  • Durability:

Tapered roller bearings are designed to withstand shocks and impacts, making them suitable for applications with dynamic loads or vibrations. Their robust construction contributes to their overall durability.

  • High-Speed Capability:

Tapered roller bearings can operate at high speeds due to their efficient contact geometry and reduced friction. This makes them suitable for applications requiring rapid rotation.

  • Cost-Effectiveness:

While the initial cost may vary, tapered roller bearings are often cost-effective due to their long service life and ability to handle heavy loads. Their durability can lead to reduced maintenance and replacement costs over time.

  • Compatibility with Combined Loads:

Tapered roller bearings are well-suited for applications where radial and axial loads occur simultaneously, eliminating the need for multiple bearing types and simplifying design and installation.

In summary, tapered roller bearings offer a combination of load-carrying capacity, efficiency, adjustability, precision, and versatility that sets them apart from other bearing types. Their ability to handle a variety of loads and conditions makes them an advantageous choice in numerous industrial applications.

tapered roller bearing

How does Proper Lubrication Impact the Performance and Longevity of Tapered Roller Bearings?

Proper lubrication is essential for ensuring optimal performance and longevity of tapered roller bearings. Lubrication plays a critical role in reducing friction, preventing wear, and managing heat generated during operation. Here’s how proper lubrication impacts tapered roller bearings:

  • Reduced Friction:

Lubrication forms a thin film between the rolling elements and raceways, reducing direct metal-to-metal contact. This minimizes friction and the associated heat generation, allowing the bearing to operate smoothly and efficiently.

  • Wear Prevention:

Lubrication forms a protective barrier that prevents wear and surface damage. Without proper lubrication, friction can lead to accelerated wear, pitting, and even surface scoring, shortening the bearing’s lifespan.

  • Heat Dissipation:

Effective lubrication helps dissipate heat generated during operation. This is especially crucial in high-speed applications where excessive heat can lead to premature bearing failure or degradation of lubricant properties.

  • Corrosion Protection:

Lubrication helps create a barrier that protects bearing surfaces from environmental factors that could lead to corrosion. This is particularly important in applications exposed to moisture, chemicals, or other corrosive agents.

  • Noise and Vibration Reduction:

Proper lubrication can dampen vibrations and reduce noise by providing a cushioning effect between the rolling elements and raceways. This contributes to smoother and quieter operation.

  • Longevity:

Well-lubricated bearings experience less wear and stress, leading to extended service life. Bearings that are inadequately lubricated or run dry are prone to premature failure due to excessive wear, heat buildup, and damage to bearing surfaces.

  • Efficiency:

Adequate lubrication maintains the bearing’s efficiency by minimizing energy losses due to friction. Bearings that lack proper lubrication require more energy to overcome higher friction levels, resulting in reduced efficiency.

  • Lubrication Methods:

Various lubrication methods are available, including grease lubrication and oil lubrication. The choice depends on factors such as speed, load, temperature, and application requirements.

To ensure proper lubrication:

  • Follow Manufacturer Recommendations:

Consult the bearing manufacturer’s recommendations for lubricant type, viscosity, and replenishment intervals.

  • Monitor and Maintain:

Regularly monitor the condition of the lubricant and the bearing’s performance. Implement a maintenance schedule for lubricant replacement or replenishment.

  • Environmental Considerations:

Consider the operating environment’s temperature, contamination levels, and exposure to external elements. Some applications may require special lubricants for extreme conditions.

In summary, proper lubrication is crucial for maintaining tapered roller bearings’ performance, preventing wear, reducing friction and heat, and extending their lifespan. A well-lubricated bearing contributes to smoother operation, lower maintenance costs, and improved efficiency.

tapered roller bearing

What Advantages do Tapered Roller Bearings Offer Compared to Other Bearing Types?

Tapered roller bearings offer several advantages that make them a preferred choice in various applications compared to other bearing types. These advantages stem from their unique design and capabilities. Here’s a look at the benefits of tapered roller bearings:

  • High Load-Carrying Capacity:

Tapered roller bearings can handle both radial and axial loads simultaneously, making them suitable for applications with combined loads. Their conical geometry allows for effective load distribution, enabling them to support heavy loads without premature wear.

  • Efficient Axial Load Handling:

Tapered roller bearings excel at managing axial (thrust) loads in one direction. This capability is crucial in applications where axial loads are present, such as automotive transmissions or industrial machinery.

  • Reduced Friction and Heat Generation:

The conical shape of the rollers and the matching raceways result in point contact, reducing friction and minimizing heat generation. This efficiency contributes to improved overall performance and energy savings.

  • Adjustable Clearance and Preload:

Tapered roller bearings often allow for adjustable internal clearance or preload. This feature enables fine-tuning of the bearing’s play, optimizing performance and extending the bearing’s lifespan.

  • High Precision:

Tapered roller bearings are available in various precision classes to meet different application requirements. Their precision makes them suitable for applications demanding accurate motion control and positioning.

  • Versatility:

Tapered roller bearings are used in a wide range of industries and applications, from automotive and heavy machinery to aerospace and industrial equipment. Their ability to handle diverse loads and conditions contributes to their versatility.

  • Durability:

Tapered roller bearings are designed to withstand shocks and impacts, making them suitable for applications with dynamic loads or vibrations. Their robust construction contributes to their overall durability.

  • High-Speed Capability:

Tapered roller bearings can operate at high speeds due to their efficient contact geometry and reduced friction. This makes them suitable for applications requiring rapid rotation.

  • Cost-Effectiveness:

While the initial cost may vary, tapered roller bearings are often cost-effective due to their long service life and ability to handle heavy loads. Their durability can lead to reduced maintenance and replacement costs over time.

  • Compatibility with Combined Loads:

Tapered roller bearings are well-suited for applications where radial and axial loads occur simultaneously, eliminating the need for multiple bearing types and simplifying design and installation.

In summary, tapered roller bearings offer a combination of load-carrying capacity, efficiency, adjustability, precision, and versatility that sets them apart from other bearing types. Their ability to handle a variety of loads and conditions makes them an advantageous choice in numerous industrial applications.

China Good quality Na48990sw/48920d Double Row Tapered Roller Bearing   carrier bearingChina Good quality Na48990sw/48920d Double Row Tapered Roller Bearing   carrier bearing
editor by CX 2024-05-08