25mm Bore Diameter Na6905 Precision CNC Machined Needle Roller Bearing 50X60X20 mm

• Customization: Available
• Cage: With Cage
• Rows Number: Single
• Model NO.: NA6905
• Load Direction: Thrust Bearing
• Style: Without Outer Ring, With Outer Ring, Without Inner Ring, With Inner Ring
• Material: Bearing Steel
• Type: Open
• Product Name: Needle Roller Bearing
• Keywords: Needle Bearing
• Model: Na6905
• Bore Diameter: 25 mm
• Outside Diameter: 42 mm
• Width: 30 mm
• Basic Dynamic Load Rating, Radial: 44.000 N
• Basic Static Load Rating, Radial: 59.000 N
• Fatigue Load Limit, Radial: 10.800 N
• Limiting Speed: 14.400 1/Min
• Limiting Speed for Grease Lubrication: 7.500 1/Min
• Reference Speed: 4.450 1/Min
• Weight: 55,4 G
• Operating Temperature Min: 30 Celsius
• Operating Temperature Max: 140 Celsius
• Transport Package: Standard Packaging or Customized
• Specification: Standard specifications or customized
• Trademark: JUDONG
• Origin: Zhejiang, China
• Production Capacity: 5000000pieces/Year

Product Description

Product Description

NEEDLE ROLLER BEARING

Product Introduction:

Needle roller bearings (needle bearings) is a cylindrical roller with a roller bearing, relative to its diameter, the roller both thin and long. This is called a needle roller. Despite having a smaller cross-section, has a higher load-bearing capacity, equipped with a thin and long needle-bearing roller (roller diameter D<5mm, L / D>2.5, L is the length of the roller), therefore radial structure is compact, its diameter size and load capacity and other types of bearings, minimum diameter, especially for radial mounting dimensions restricted support structure.

According to different occasions, can be used without the inner ring of the bearing or needle roller and cage assembly, when the surface of the journal bearing surface and shell holes as bearing directly match the outer rolling surface, to ensure the load capacity and operating performance and have the same ring bearing, shaft or housing bore raceway surface hardness, machining accuracy, and surface quality should be similar roller bearing rings. Such bearings can only bear radial load.

APPLICATION:

Needle roller bearings are widely used in cars, compressors, construction, electric motors, food industry, home appliances, etc. As a rolling element, it turns the world.

Product Parameters

NEEDLE ROLLER BEARING SPECIFICATIONS
Product Name	Needle Roller Thrust Bearing
Keywords	Needle Roller Bearing
Model	NA6905
Bore Diameter Cage	25 mm
Outside Diameter	42 mm
Rolling Element Diameter	30 mm
Raceway Dimension	44.000 N
Basic Dynamic Load Rating, Axial	59.000 N
Basic Static Load Rating, Axial	10.800 N
Fatigue Load Limit, Axial	14.400 1/min
Limiting Speed	7.500 1/min
Reference Speed	4.450 1/min
Weight	55,4 g
Operating Temperature Min	30 Celsius
Operating Temperature Max	140 Celsius
We support customized bearings of various types, materials and uses

Detailed Photos

Axial Needle Roller And Cage Assemblies            

Axial needle roller and cage assembly

Axial needle roller and cage assemblies, single direction, to DIN 5405-2

Drawn cup needle roller bearings with open ends HK, to DIN 618/ISO 3245

Main Dimensions & Performance Data
Model NO.	NA6905
d	25 mm	Bore Diameter
D	42 mm	Outside Diameter
B	30 mm	Width
Cr	44.000 N	Basic Dynamic Load Rating, Radial
C0r	59.000 N	Basic Static Load Rating, Radial
Cur	10.800 N	Fatigue Load Limit, Radial
Ng	14.400 1/min	Limiting Speed
nG Grease	7.500 1/min	Limiting Speed For Grease Lubrication
nϑr	4.450 1/min	Reference Speed
≈m	55,4 g	Weight
Dimensions
F	30 mm	Raceway Diameter Inner Ring
rmin	0,3 mm	Minimum Chamfer Dimension
s	1 mm	Axial Displacement
Temperature range
Tmin	30 °C	Operating Temperature Min.
Tmax	140 °C	Operating Temperature Max.

HIGH-QUALITY MATERIAL: 

The Needle Bearing is made from GCR15 steel, ensuring durability and long-lasting performance. This material provides excellent strength and resistance to wear and tear.

PRECISION RATING: 

This bearing boasts a precision rating of P0, P6, P5, and P4, making it suitable for applications requiring high accuracy and precision.

WIDE RANGE OF INDUSTRIES: 

This bearing is applicable in various industries, including building material shops, manufacturing plants, machinery repair shops, and construction works, making it a versatile option for multiple sectors.

NCERTIFICATION: 

The product meets the ISO 9001:2000 certification standards, ensuring that it meets international quality and safety standards.

CUSTOMIZABLE OPTIONS: 

Available in a single-row structure with a steel cage, this bearing can be customized to fit specific user requirements, such as who may need a bearing with a specific bore size of 17 mm.

FAQ

Q1: What about the MOQ? Can you accept a sample order?
A: Our company MOQ is 1pc, and we can accept sample orders.

Q2: Can you accept OEM/ODM?
A: Yes, we can.Customizing according to your requirements or drawing.

Q3: Do you supply door-to-door service?
A: By air or express(DHL, FEDEX, EMS, etc.)

Q4: Could you tell me the materials of your bearings?
A: Chrome steel, carbon steel, stainless steel, ceramic, and plastic material.

Q5: Are you a factory or trading company?
A: We have our factory, JUDONG Bearing is specializes in manufacturing and exporting bearings.