Product Description
And can bear radial load and axial load of angular contact ball bearings, single row angular contact ball bearings can only endure single direction axial load, so it is often adopted to paired mounting. When used in pair has preload matched angular contact ball bearings are the most convenient.Retainers are made of brass, synthetic resins, with bearing form, conditions of use and distinction.
| Model Number | Inner Diameter | Outer Diameter | Width |
| (mm) | (mm) | (mm) | |
| 7304AC | 20 | 52 | 12 |
| 7305AC | 25 | 62 | 17 |
| 7306AC | 30 | 72 | 19 |
| 7307AC | 35 | 80 | 21 |
| 7308AC | 40 | 90 | 23 |
| 7309AC | 45 | 100 | 25 |
| 7310AC | 50 | 110 | 27 |
| 7311AC | 55 | 120 | 29 |
| 7312AC | 60 | 130 | 31 |
| 7313AC | 65 | 140 | 33 |
| 7314AC | 70 | 150 | 35 |
| 7315AC | 75 | 160 | 37 |
| 7316AC | 80 | 170 | 39 |
| 7317AC | 85 | 180 | 41 |
| 7318AC | 90 | 190 | 43 |
| 7319AC | 95 | 200 | 45 |
| 7320AC | 100 | 215 | 47 |
| 7322AC | 110 | 240 | 50 |
| Model Number | Inner Diameter | Outer Diameter | Width |
| (mm) | (mm) | (mm) | |
| 7305ACM | 25 | 62 | 17 |
| 7306ACM | 30 | 72 | 19 |
| 7307ACM | 35 | 80 | 21 |
| 7308ACM | 40 | 90 | 23 |
| 7309ACM | 45 | 100 | 25 |
| 7310ACM | 50 | 110 | 27 |
| 7311ACM | 55 | 120 | 29 |
| 7312ACM | 60 | 130 | 31 |
| 7313ACM | 65 | 140 | 33 |
| 7314ACM | 70 | 150 | 35 |
| 7315ACM | 75 | 160 | 37 |
| 7316ACM | 80 | 170 | 39 |
| 7317ACM | 85 | 180 | 41 |
| 7318ACM | 90 | 190 | 43 |
| 7319ACM | 95 | 200 | 45 |
| 7320ACM | 100 | 215 | 47 |
| 7322ACM | 110 | 240 | 50 |
| 7324ACM | 120 | 260 | 55 |
| Model Number | Inner Diameter | Outer Diameter | Width |
| (mm) | (mm) | (mm) | |
| 7405AC | 25 | 80 | 21 |
| 7406AC | 30 | 90 | 23 |
| 7407AC | 35 | 100 | 25 |
| 7408AC | 40 | 110 | 27 |
| 7409AC | 45 | 120 | 29 |
| 7410AC | 50 | 130 | 31 |
| 7411AC | 55 | 140 | 33 |
| 7412AC | 60 | 150 | 35 |
| 7413AC | 65 | 160 | 37 |
| 7414AC | 70 | 180 | 42 |
| 7415AC | 75 | 190 | 45 |
| 7416AC | 80 | 200 | 48 |
| Model Number | Inner Diameter | Outer Diameter | Width |
| (mm) | (mm) | (mm) | |
| 7406ACM | 30 | 90 | 23 |
| 7407ACM | 35 | 100 | 25 |
| 7408ACM | 40 | 110 | 27 |
| 7409ACM | 45 | 120 | 29 |
| 7410ACM | 50 | 130 | 31 |
| 7411ACM | 55 | 140 | 33 |
| 7412ACM | 60 | 150 | 35 |
| 7413ACM | 65 | 160 | 37 |
| 7414ACM | 70 | 180 | 42 |
| 7415ACM | 75 | 190 | 45 |
| 7416ACM | 80 | 200 | 48 |
| 7417ACM | 85 | 210 | 52 |
| 7418ACM | 90 | 225 | 54 |
ZheJiang Haina Bearing Co., Ltd. is an integrated company of industry and trade. Since its establishment, it has been committed to the research and development, production, and sales of high-end 7 types of tapered roller bearings, British non-standard bearings, deep groove ball bearings, and outer spherical bearings. We can customize and adjust various types of bearings according to customer needs. The products are widely applicablein fields such as automobiles, mines, chemicals, metallurgy, reducers, engineering machinery, agricultural machinery, and electric motors.
Our company has advanced testing equipment, forming a production model of product serialization and mass production. We have a group of experienced and skilled management personnel, who have introduced advanced production equipment and measuringand testing equipment. From the purchase of bearing raw materials to the delivery of finished products, we strictly control the entire process, ensuring the quality of the products.The products have the characteristics of precision, low noise, high load-bearing capacity and long service life.
1. Your factory how to control the quality?
A: All bearing parts before the production and the production process, strict inspection by 100%, including crack detection, roundness, hardness,
roughness,and the geometry size, all bearing meet ISO international standard.
2. Can you tell me the bearing material?
A: We have chrome steel GCR15, stainless steel, ceramics and other materials.
3. How long is your delivery time?
A: If the goods are in stock, usually 5 to 10 days, if the goods are no stock for 15 to 20 days, according to the quantity to determine the time.
4. OEM and custom you can receive?
A: Yes, accept OEM, can also be customized according to samples or drawings for you.
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| Contact Angle: | 25° |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Unseparated |
| Rows Number: | Multiple |
| Load Direction: | Radial Bearing |
| Material: | Alloy |
| Samples: |
US$ 1.29/Piece
1 Piece(Min.Order) | |
|---|
What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?
Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:
- Unusual Noise:
If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.
- Vibration:
Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.
- Increased Temperature:
Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.
- Irregular Movement:
If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.
- Reduced Performance:
If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.
- Visible Wear or Damage:
Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.
- Leakage or Contamination:
If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.
- Looseness or Excessive Play:
If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.
- Reduced Lifespan:
If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.
- Frequent Failures:
If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.
It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.
Are there any Industry Standards or Certifications that Ball Bearings should Meet?
Yes, there are several industry standards and certifications that ball bearings should meet to ensure their quality, performance, and reliability. These standards help manufacturers, engineers, and customers assess the suitability of bearings for specific applications. Some of the key standards and certifications for ball bearings include:
- ISO Standards:
The International Organization for Standardization (ISO) has developed a series of standards related to ball bearings. ISO 15 defines dimensions, boundary dimensions, and tolerances for radial bearings. ISO 281 specifies dynamic load ratings and calculation methods for bearings’ life calculations.
- ABEC (Annular Bearing Engineering Committee) Ratings:
ABEC ratings are commonly used in North America to indicate the precision and performance of ball bearings. Ratings range from ABEC 1 (lowest precision) to ABEC 9 (highest precision). However, it’s important to note that ABEC ratings focus primarily on dimensional tolerances and do not encompass all aspects of bearing quality.
- DIN Standards:
The German Institute for Standardization (Deutsches Institut für Normung, DIN) has published various standards related to ball bearings. DIN 625 covers dimensions for deep groove ball bearings, while DIN 616 provides guidelines for precision angular contact ball bearings.
- JIS (Japanese Industrial Standards):
JIS standards are used in Japan and internationally to define the characteristics and dimensions of various products, including ball bearings. JIS B 1512 outlines the classification and dimensions of rolling bearings.
- ASTM (American Society for Testing and Materials) Standards:
ASTM has standards that cover various aspects of bearing testing, performance, and materials. ASTM F2215, for instance, specifies the requirements for ball bearings used in surgical implants.
- CE Marking:
CE marking indicates that a product complies with European Union health, safety, and environmental requirements. It may be required for bearings used in machinery intended to be sold within the EU market.
- Industry-Specific Standards:
Various industries, such as aerospace, automotive, medical, and nuclear, have specific standards or certifications that bearings must meet to ensure safety, reliability, and compliance with industry-specific requirements.
- Quality Management Systems:
Manufacturers that adhere to quality management systems, such as ISO 9001, demonstrate their commitment to consistent product quality and customer satisfaction. Certification to these systems indicates that the manufacturing process follows established protocols and best practices.
When selecting ball bearings, it’s important to consider the relevant standards and certifications that align with the application’s requirements. This ensures that the bearings meet recognized quality and performance criteria, ultimately contributing to reliable and efficient operation.
What are the Different Components that Make up a Typical Ball Bearing?
A typical ball bearing consists of several essential components that work together to reduce friction and support loads. Here are the main components that make up a ball bearing:
- Outer Ring:
The outer ring is the stationary part of the bearing that provides support and houses the other components. It contains raceways (grooves) that guide the balls’ movement.
- Inner Ring:
The inner ring is the rotating part of the bearing that attaches to the shaft. It also contains raceways that correspond to those on the outer ring, allowing the balls to roll smoothly.
- Balls:
The spherical balls are the rolling elements that reduce friction between the inner and outer rings. Their smooth rolling motion enables efficient movement and load distribution.
- Cage or Retainer:
The cage, also known as the retainer, maintains a consistent spacing between the balls. It prevents the balls from touching each other, reducing friction and preventing jamming.
- Seals and Shields:
Many ball bearings include seals or shields to protect the internal components from contaminants and retain lubrication. Seals provide better protection against contaminants, while shields offer less resistance to rotation.
- Lubricant:
Lubrication is essential to reduce friction, wear, and heat generation. Bearings are typically filled with lubricants that ensure smooth movement between the balls and raceways.
- Flanges and Snap Rings:
In some designs, flanges or snap rings are added to help position and secure the bearing in its housing or on the shaft. Flanges prevent axial movement, while snap rings secure the bearing radially.
- Raceways:
Raceways are the grooved tracks on the inner and outer rings where the balls roll. The shape and design of the raceways influence the bearing’s load-carrying capacity and performance.
- Anti-Friction Shield:
In certain high-speed applications, a thin anti-friction shield can be placed between the inner and outer rings to minimize friction and heat generation.
These components work together to enable the smooth rolling motion, load support, and reduced friction that characterize ball bearings. The proper design and assembly of these components ensure the bearing’s optimal performance and longevity in various applications.
editor by CX 2024-05-15