Product Description


Product Description

Bicycle headsetAngular Contact Bearing(ACB)is application for 1″, 1-1/8″, 1-1/4″ and 1-1/2″internal & semi-intergrated headsets.

Bicycle Brand: Cannondale;Giant;Kona;Marin;Niner;Pivot;Scott;Specialized;Trek;Yeti.etc

Item No.: AC3344H6

Type: Bicycle headset Bearing

Material: chrome steel GCr15 / AISI52100.

Bore diameter: 33mm Outer diameter : 44mm Width(Height/Thickness):6mm

Size: 33*44*6mm

Cage/retainer : Nylon PA66+25%GF.
Seal : rubber seal, double-sealed.

Balls: chrome steel GCr15 / AISI52100.

Lubrication: Mobil XHP-222 or HTHS #2.



Item No. Bore diameter
Outer diameter
AC3344H6 33 44 6 2 Rubber seals(NBR)


Detailed Photos



   Our company provides high-precision homemade bearing of ordinary material, including deep groove ball bearing and full complement cylindrical roller bearings.
 The material refers to high-quality bearing steel, thermal treatment technology is put under strict control, and it is CZPT to carry out cryogenic treatment. And full complement cylindrical roller bearings adopts advanced roller CZPT for thermal treatment. Other technologies are all processed by full-automatic and semiautomatic equipment, and the production technology and quality control are arranged as per P5 precision. It products widely support home and abroad manufacturers of electric tools, mechanical equipment, automobile components, etc.

Manufacture Equipment


Company Profile


 HangZhou WOLEE induststial Co., Ltd. was founded in 2015. It is a professional company which engages in import and export of industrial components and is a professional production base with joint stocks.

 The company mainly operates bearings and other industrial components such as chain, CZPT rail, gear and micro gearbox. Its products are widely used in the fields of metallurgy, mining, papermaking, petrochemical, power, railway, aviation, cement, textile, machinery, etc., it has lots of clients among these fields and has accumulated rich experience to meet different demands of all sectors. At present, its trade scale expands increasingly, its clients are all across the world, and it wins the trust of home and abroad clients by virtue of good reputation.

 The company adheres to the tenet of “people first, quality first, credit first and reputation first” and provides each client with top service.

 It heartily hopes to join hands with you to create a wonderful world.

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Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
US$ 10/Piece
1 Piece(Min.Order)


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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

deep groove ball bearing

What are the signs of wear or damage in deep groove ball bearings, and when should they be replaced?

Deep groove ball bearings, like any mechanical component, can experience wear or damage over time. It is important to identify the signs of wear or damage in bearings and know when they should be replaced to prevent further issues. Here’s a detailed explanation of the signs of wear or damage in deep groove ball bearings and when they should be replaced:

  • Abnormal Noise:
  • Unusual noises, such as grinding, clicking, or rumbling sounds, can indicate bearing wear or damage. These noises may occur during operation and can be an indication of insufficient lubrication, misalignment, or the presence of foreign particles. If abnormal noise is detected, it is recommended to inspect the bearings promptly and replace them if necessary.

  • Excessive Vibration:
  • Excessive vibration during operation can be a sign of bearing wear or damage. Vibrations may occur due to misalignment, imbalance, or the presence of faulty bearings. If the vibration levels are unusually high and cannot be attributed to other factors, the bearings should be inspected and replaced if needed.

  • Increased Temperature:
  • Significantly increased operating temperature of the bearings can indicate wear or damage. Excessive friction caused by worn-out or misaligned bearings can generate excessive heat. If the temperature of the bearings exceeds the recommended operating limits, it is advisable to investigate the cause and replace the bearings as necessary.

  • Irregular or Uneven Operation:
  • Irregular or uneven operation of the equipment or machinery can be a symptom of bearing wear or damage. This may manifest as erratic or jerky movements, decreased performance, or decreased efficiency. If such irregularities are observed, the bearings should be inspected to determine if replacement is required.

  • Visible Wear or Damage:
  • Physical inspection of the bearings can reveal visible signs of wear or damage. These signs may include pitting, rust formation, scoring, or discoloration on the bearing surfaces. Excessive wear or damage that affects the smooth rolling motion or integrity of the bearings should prompt immediate replacement.

  • Lubrication Issues:
  • Problems with lubrication, such as inadequate or contaminated lubricant, can contribute to bearing wear or damage. Insufficient lubrication can lead to increased friction, heat generation, and accelerated wear. If lubrication-related issues persist despite proper maintenance, it may be necessary to replace the bearings.

  • Operating Conditions:
  • The operating conditions of the equipment or machinery can also influence the lifespan of deep groove ball bearings. Factors such as heavy loads, high speeds, extreme temperatures, exposure to corrosive environments, or prolonged use can accelerate wear or damage. In such demanding conditions, bearings may need to be replaced more frequently to ensure reliable operation.

It is important to note that the timing of bearing replacement depends on various factors, including the severity of wear or damage, the criticality of the application, and the manufacturer’s recommendations. Regular inspection and maintenance practices, as well as monitoring of the aforementioned signs, can help determine the appropriate timing for bearing replacement. Consulting with bearing manufacturers or maintenance professionals can provide valuable guidance in assessing the condition of deep groove ball bearings and making informed decisions regarding replacement.

In summary, signs of wear or damage in deep groove ball bearings include abnormal noise, excessive vibration, increased temperature, irregular or uneven operation, visible wear or damage, lubrication issues, and demanding operating conditions. Prompt replacement of bearings exhibiting these signs is essential to prevent further damage, avoid equipment failure, and ensure the continued smooth and reliable operation of machinery or equipment.

deep groove ball bearing

What are the common applications and industries where deep groove ball bearings are widely used?

Deep groove ball bearings are versatile components that find extensive use in various applications and industries. Here’s a detailed explanation of the common applications and industries where deep groove ball bearings are widely used:

  • Automotive Industry:
  • Deep groove ball bearings are extensively used in the automotive industry for applications such as wheel hubs, transmissions, engines, electric motors, and steering systems. They provide reliable performance, low friction, and high-speed capabilities, making them suitable for a wide range of automotive components.

  • Industrial Machinery:
  • Deep groove ball bearings are widely employed in industrial machinery, including pumps, compressors, fans, conveyors, and machine tools. Their ability to accommodate radial and axial loads, high rotational speeds, and their durability make them ideal for various motion and power transmission applications.

  • Electrical Motors and Generators:
  • Deep groove ball bearings are commonly used in electric motors and generators. They facilitate smooth operation, reduce friction losses, and support high-speed rotation. These bearings are found in a wide range of motor-driven equipment, such as household appliances, HVAC systems, power tools, and electric vehicles.

  • Agricultural Machinery:
  • Deep groove ball bearings are utilized in agricultural machinery and equipment, including tractors, harvesters, irrigation systems, and farm implements. They provide reliable performance in demanding and harsh environments, helping to support the agricultural industry’s productivity and efficiency.

  • Construction and Mining Equipment:
  • Deep groove ball bearings are used in construction and mining equipment, such as excavators, loaders, bulldozers, and crushers. These bearings withstand heavy loads, shock, and vibration, contributing to the reliable operation of machinery in challenging construction and mining environments.

  • Material Handling Equipment:
  • Deep groove ball bearings play a vital role in material handling equipment, including forklifts, conveyors, cranes, and hoists. They enable smooth and efficient movement of goods, handling heavy loads, and operating in diverse conditions encountered in warehouses, distribution centers, and manufacturing facilities.

  • Medical and Dental Equipment:
  • Deep groove ball bearings are utilized in various medical and dental equipment, including surgical instruments, dental handpieces, imaging systems, and laboratory devices. They offer precision, smooth operation, and low noise, meeting the stringent requirements of the healthcare industry.

  • Home Appliances:
  • Deep groove ball bearings are found in a wide range of home appliances, such as washing machines, refrigerators, air conditioners, vacuum cleaners, and kitchen appliances. They provide reliable and quiet operation, contributing to the performance and durability of these everyday household products.

  • Sports and Fitness Equipment:
  • Deep groove ball bearings are used in sports and fitness equipment, including bicycles, skateboards, fitness machines, and gym equipment. They enable smooth and efficient rotation, reducing friction and enhancing the performance of sporting and fitness activities.

In summary, deep groove ball bearings are widely used in applications and industries such as automotive, industrial machinery, electrical motors and generators, agricultural machinery, construction and mining equipment, material handling equipment, medical and dental equipment, home appliances, and sports and fitness equipment. Their versatility, reliability, and ability to withstand various operating conditions make them indispensable components in numerous sectors.

deep groove ball bearing

What considerations are important when selecting the appropriate size and material for a deep groove ball bearing?

When selecting the appropriate size and material for a deep groove ball bearing, several important considerations should be taken into account. These considerations ensure that the bearing is properly matched to the application requirements, leading to optimal performance and longevity. Here’s a detailed explanation of the key considerations when selecting the size and material for a deep groove ball bearing:

  • Load Requirements:
  • The anticipated load conditions, both radial and axial, are a critical factor in determining the appropriate size and material for a deep groove ball bearing. The bearing must be able to support the expected loads without excessive deformation or premature failure. The load capacity and fatigue life characteristics of the bearing should be carefully evaluated to ensure it can withstand the applied loads throughout its intended service life.

  • Speed and Operating Conditions:
  • The rotational speed and operating conditions of the application play a significant role in bearing selection. High-speed applications require bearings that can withstand the centrifugal forces and maintain stability, while heavy-duty or harsh operating conditions may necessitate materials with superior corrosion resistance or high-temperature capability. The bearing’s maximum allowable speed, temperature range, and environmental factors should be considered to ensure reliable and long-lasting performance.

  • Accuracy and Tolerance:
  • The required level of accuracy and tolerance in the application should be considered when selecting a deep groove ball bearing. Precision applications, such as machine tools or instrumentation, often demand bearings with tighter tolerances and higher levels of accuracy to achieve the desired performance. Assessing the required dimensional accuracy, running accuracy, and clearance requirements enables the selection of a bearing that meets the specific application’s precision needs.

  • Lubrication and Maintenance:
  • The lubrication and maintenance requirements influence the choice of bearing material. Factors such as operating temperature, speed, and contamination levels impact the selection of an appropriate lubricant and bearing material combination. High-temperature or high-speed applications may require materials with enhanced heat dissipation or lubrication capabilities, while environments with contaminants or moisture may necessitate corrosion-resistant materials or protective seals. Considering the lubrication and maintenance demands ensures the bearing can operate reliably under the specified conditions.

  • Space Constraints and Design:
  • The available space and design constraints within the application are crucial considerations when selecting the size of a deep groove ball bearing. The bearing dimensions, including outer diameter, inner diameter, and width, must be compatible with the available space and mating components. It is important to consider the bearing’s installation method, whether it requires a press fit, clearance fit, or other mounting arrangements, to ensure proper assembly and alignment within the application.

  • Cost and Availability:
  • Cost-effectiveness and availability are practical considerations in bearing selection. Evaluating the cost of the bearing in relation to its expected performance, service life, and maintenance requirements helps determine the best value for the application. Additionally, considering the availability and lead times of the selected bearing type and size ensures timely procurement and minimizes potential production delays or downtime.

By carefully considering these factors – load requirements, speed and operating conditions, accuracy and tolerance, lubrication and maintenance, space constraints and design, and cost and availability – when selecting the size and material for a deep groove ball bearing, it is possible to choose a bearing that is well-suited to the specific application’s needs. This ultimately leads to optimized performance, durability, and reliability of the bearing within the intended application.

China manufacturer Spare Parts Axial Angular Ball Bearings for Bicycles AC3344h6 Headset Bearing   bearing exampleChina manufacturer Spare Parts Axial Angular Ball Bearings for Bicycles AC3344h6 Headset Bearing   bearing example
editor by CX 2024-02-22