Source Factory High Precision OEM 7318 Bm Angular Contact Ball Bearings

• Customization: Available
• Contact Angle: 25°
• Aligning: Aligning Bearing
• Model NO.: 7318
• Separated: Unseparated
• Rows Number: Single
• Load Direction: Radial Bearing
• Material: Ceramic
• Precision Rating: High Precision
• Type: Ball
• Seals Type: Oil Coated
• Number of Row: Single Row
• Certification: ISO9001
• Quality: 100% Tested
• Hardness: 60--65HRC
• Transport Package: Box
• Specification: customized
• Trademark: HLT
• Origin: China
• HS Code: 8483200000
• Production Capacity: 500000pieces Per Year

Product Description

Product Description

Our company's ultra-precision high-speed ceramic ball bearings use Si3N4 ceramic balls as rolling elements and GCr15, 9Cr18 (Mo), Cr4Mo4V, and other alloy steel materials as ring materials to produce P2 and P4 level bearings. This can solve the problem of bearings being unable to be used normally under certain circumstances.

Advantages: high and low-temperature resistance, ultra-high speed, ultra-long life, acid and alkali corrosion resistance, dry friction without lubrication, impact resistance, insulation, etc.

High-precision silicon nitride (Si3N4) ceramic balls
Rolling element material: silicon nitride
Density:3.21-3.24
Modulus of elasticity: 308
HardnessHRC: 90-93
Anti-paste strength: 800
Compressive strength: 3400
Thermal expansion coefficient: 3.2
Thermal conductivity: 35
Maximum operating temperature: 1000ºC
Self-lubricating: Good
Poisson's ratio:0.26
Excellent training ability: Good
Dimensional stability: Good

Cage
Cage material: phenolic bakelite
Cage performance: The silent effect is between metal and nylon materials, with a certain elasticity, lightweight, and certain anti-sliding and self-lubricating properties. Suitable for high-speed bearings, high acceleration and subtraction, etc.

 

Our Advantages

1. The density of silicon nitride ceramics is only 42% of bearing steel. It is light in weight and is of great significance in the aerospace field.
2. Silicon nitride ceramic balls have a small density, small centrifugal force, and high-speed rotation.
The bearing life during rotation is greatly improved.
3. Silicon nitride ceramic has high wear resistance and greatly improves bearing life.
4. Silicon nitride ceramic bearings can still work normally for a long time even if lubrication is lost, which greatly improves the safety and reliability of aerospace equipment.
 

Product Parameters

 

Application

1. Papermaking machinery, deceleration device, railway vehicle axle, rolling mill, roller gearbox
2. Crusher, vibrating screen, printing machinery, woodworking machinery
3. Various industrial reducer


 

Company Profile

Our existing products include high-precision silicon nitride (Si3N4) ceramic balls and ultra-precision ceramic bearings, with more than 60 varieties.

The ultra-precision ceramic bearings produced by the company are high-end bearings. They mainly produce angular contact ball bearings and deep groove ball bearings with an inner diameter of φ10-φ60mm. They can also produce bearings with special requirements, sliding bearings, and various customized non-standard bearings.

The accuracy levels of our products are divided into three levels: P4, P4A, and P2. The quality, performance, reliability, and service life of the bearings are equivalent to the physical bearings of the world's top brands. The DmN value of grease-lubricated bearings can reach 2 million. When lubricated with oil, The DmN value can reach 2.6 million, and the limit revolution speed can reach 80,000 revolutions per minute. It is mainly used to replace imports and break the monopoly of imported bearings in the domestic high-end market.

 

Certifications

FAQ

1. Free Samples: contact us by email or trade manager, and we will send the free samples per your request.  
2. World-Class Bearing: We provide our customers with all types of indigenous bearing with world-class quality.
3. OEM or Non-Stand Bearings: Any requirement for Non-standard bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry. 
4. Genuine products With Excellent Quality: The company has always proved the 100% quality products it provides with genuine intent.
5. After-Sales Service and Technical Assistance: The company provides after-sales service and technical assistance per the customer's requirements and needs.
6. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain.
7. Cost Saving: We provide long-life, shock-resistant, high-reliability bearings with excellent quality and better performance. It is resulting in increased cost savings.
8. Attending customer queries promptly: We believe that if customers are satisfied, it proves our worth. Customers are always given quick support.