INA Bearing Speed Vibration Solving Skills
INA Bearing Speed Vibration Solving Skills
The Failure Causes of Four Row Cylindrical Roller Bearings in Use are Analyzed
The Failure Causes of Four Row Cylindrical Roller Bearings in Use are Analyzed

Precautions for Clearance Detection on Timken Bearing Tightening Sleeve

  • Measure the clearance of the outer ring of Timken bearing when the roller is sagging. First, ensure the upright attitude of Timken bearing, rotate the outer ring left and right for 1 / 2-1 turn, and any roller of the two rows of rollers is in the lower position respectively. Use a feeler gauge to measure the clearance. The measuring part is somewhat different according to the outer diameter of the bearing outer ring.

Precautions for Clearance Detection on Timken Bearing Tightening Sleeve

  • Measurement of bearing clearance with outer diameter of outer ring greater than 200mm. Insert the feeler gauge between the two rows of rollers directly above the bearing and the outer ring, and between the two rows of rollers and the inner ring at the left-right symmetrical position relative to the bearing center, and measure the internal clearance of each bearing. 
  • The internal clearance r of Timken bearing is that the internal clearance measured between the two rows of rollers directly below the bearing and the outer ring is set as RS1 ` RS2 respectively, and the internal clearance directly above the bearing is set as rs. Rs = 1 / 2 (RS1 + RS2) set the bearing internal clearance measured between the two rows of rollers and the outer ring at the left and right symmetrical positions relative to the bearing center and the clearance measured between the two rows of rollers on the left and the outer ring as RL1 ` 
  • RL2 respectively, and set the bearing internal clearance on the left as RL. RL = 1 / 2 (RL1 + RL2), set the measured clearance between the two rows of rollers on the right and the outer ring as R1 ` RR2 respectively, and the internal clearance of the bearing on the right as RR.

When inspecting Timken bearings, we must comply with relevant regulations. Let’s introduce the specific matters below.

  •  Provisions on measurement area for the measurement of the inner diameter or outer diameter of Timken bearing, it is stipulated in China that the measurement is within the area with a large chamfer coordinate away from the south end of the ferrule, while it is mostly stipulated in foreign countries that the measurement is within the area with twice the chamfer coordinate away from the two ends of the ferrule.
  •  The instrument used in the measurement must be calibrated and have the accuracy and magnification corresponding to the measured bearing.
  •  Probe radius and gauge pressure in order to reduce the measurement error, we must strive to reduce the pressure measuring force of the gauge and increase the radius of curvature of the probe within the possible range.
  •  The provisions of dimension standard: when the comparative measurement method is used to measure the bearing dimension tolerance, the specified quantity block or standard part shall be used as the dimension standard for comparative measurement.
  •  The gauge block must comply with the provisions of the standard JB / t1078 gauge block, and the standard part must comply with the provisions of the competent department of the manufacturer.Precautions for Clearance Detection on Timken Bearing Tightening Sleeve
  •  Provisions for measuring datum plane for general Timken rolling bearings, the non printed end face of the ferrule is taken as the datum plane during measurement, and for angular contact ball bearings and tapered roller bearings, the end face bearing thrust load is taken as the datum plane.Precautions for Clearance Detection on Timken Bearing Tightening Sleeve

Precautions for Clearance Detection on Timken Bearing Tightening Sleeve
  • Then it’s time to change the lubricant of the bearing. After draining the old engine oil, if possible, the bearings lubricated with engine oil should be filled with fresh engine oil and let the machine rotate at low speed for a few minutes. 
  • Make the oil collect residual pollutants as much as possible, and then drain the oil. When replacing the grease of the bearing lubricated with grease, the Joe remover used should avoid the contact of cotton with any part of the rod end joint bearing. 
  • Because these residual fibers may wedge between rolling parts and cause damage, especially in the application of IKO bearing. 
  • Some matters needing attention in the installation of thin-walled cross roller bearing, such as the perpendicularity of shaft ring and shaft centerline, the accuracy of bearing device or the condition after reverse installation, etc. the following is the introduction of skills and methods.
Precautions for Clearance Detection on Timken Bearing Tightening Sleeve

TIMKEN Bearing

Timken has designed a growing, market-leading portfolio of engineered bearings and power transmission products. Timken® engineering bearings have close tolerances, proprietary internal geometries and high-quality materials. Our conical, spherical, cylindrical, thrust, spherical, sliding, miniature, precision and seat unit bearings have strong performance, consistency and reliability. Power transmission products. They provide a diverse and growing range of drive automatic lubrication systems, linear motion products, chains, belts, couplings, industrial clutches and brakes to ensure the efficient operation of the system. They use the power transmission knowledge to more comprehensively meet the industrial movement needs of customers. Our industrial drive system service continuously restores the equipment to a new state.

Timken bearings

Product Catalog of Timken

TIMKEN Deep Groove Ball Bearings

TIMKEN Thrust Ball Bearing

TIMKEN Tapered Roller Bearings

TIMKEN  Pillow Block Bearings

TIMKEN Self-aligning Ball Bearing

TIMKEN  Needle Roller Bearing

TIMKEN Cylinder Roller Bearing

TIMKEN Angular Contact Ball Bearing

More Bearings

TIMKEN Spherical Roller Bearing

TIMKEN  Thrust Roller Bearing

Product Description of TIMKEN Bearing

Application of TIMKEN Bearing

  • Timken is suitable for almost all industries
  • Timken’s product line is diverse and consists of durable products that can be used in various industries. Their applications are almost limitless, from military equipment and applications to the aerospace industry to defense systems and agriculture. In short, you will find that Timken parts play a role in almost all places where bearings are used.
  • Over the years, Timken has also acquired many industry-leading brands, including National Seals, Torrington, Fafnir Bearings, etc. Find more information about these brands and find the products they produce with ProSource.


Motor field

Motor field

Medical equipment

Medical equipment

Wind power

Wind power





Shipping & Package of TIMKEN Bearing

Shipping port: Qingdao/Tianjin
Supply Ability: 100,000 pieces per month

  1. Plastic bag + single box + carton + plywood pallet
  2. Neutral industrial packaging + neutral carton packaging + pallet
  3. According to customer requirements

Why choose us

  1. Sample requirements: Contact us via email or trade manager, we will send samples according to your requirements.
  2.  World-class bearings: We provide customers with world-class quality domestically produced bearings.
  3. OEM or non-support bearings: As we have a wealth of knowledge and connections in the industry, we can easily meet any requirements for non-standard bearings.
  4. Outstanding quality of genuine products: The company has been proving that it provides 100% quality products with genuine intentions.
  5.  After-sales service and technical assistance: The company provides after-sales service and technical assistance according to customer requirements and needs.
  6. Fast delivery: The company provides on-time delivery through its streamlined supply chain.
  7.  Cost-saving: We provide long-life, anti-vibration, high-reliability bearings with high quality and better performance. This increases cost savings.
  8.  Answer customers’ questions in time: We believe that if customers are satisfied, it proves our value.
    Customers always get fast support.

Hot Products



Due to their internal design, ball bearings cannot usually be disassembled down to the component level; therefore, they cannot usually be refurbished.

Solid base shells are manufactured without cavities and fillers; they are stronger than hollow bases, and there are no traps for bacteria and fungi to grow. In the thermoplastic shell, the sturdy base will not break under steam or high-pressure washing. The hollow base saves material and weight to reduce costs. Some people use epoxy resin to backfill the hollow base to eliminate the trap of bacteria breeding, but this will not increase the strength, will cause the installation surface to be uneven, and water will seep between the shell and the filling material, causing cracking.

Use particularly thermally stable bearing rings, larger internal clearance (C4), specially selected lubricants that will not decompose at high temperatures, and zinc anodized flinger. There are two basic versions of our high temperature bearings. The suffix “C4HR5” represents the bearing that can withstand 400°F, and the suffix “C4HR23” represents the bearing that can withstand 450°F.

For critical applications such as pulp and paper processing, printing and packaging, material tearing can cause expensive downtime due to excessive torque and vibration.

The two biggest factors affecting the starting and running torque of the bearing are the seal design and lubricant selection. The shaft and bearing seat fit, component accuracy and surface finish, and retainer design also have some influence.

In higher speed applications, non-contact sealing devices are usually required to minimize operating torque and heat generation, so oil baffle rings and secondary sealing devices are usually required. Flowing oil lubrication systems are usually the best solution.

After proper installation, most seated bearings only need to be relubricated regularly with a small amount of grease and checked to ensure that they operate at low temperatures, quietness, and sufficient accuracy.

This depends on many factors, such as the application’s load conditions, operating speed, duty cycle, temperature, and operating environment. The technical information section of this website provides some basic information. Our engineers can help you determine more specific theoretical life calculations.

When noise and/or operating temperature increase or operating accuracy decreases, bearings should be replaced.

Lubricant of choice
Lubrication joint type or location
Sealing materials and design options
Dimensions, suitable for housing or insert
Fixing screw options
Paint the shell in any color

Too little or too much lubricant
Incorrect lubricant type
Poor bearing installation
Improper internal clearance
Excessive load and/or speed
Extreme temperature
Movement between mounting surfaces

The noise emitted by the bearing may be caused by a combination of one or more factors, such as insufficient working clearance, excessive working clearance, changes in working clearance due to temperature, damage to the contact area, contamination, inappropriate lubricants or The raceway is damaged.

Lubricants have five basic functions for bearings:

Reduce friction
Reduce wear
Reduce temperature rise
Minimize corrosion
Seal contaminants

We do not recommend mixing grease. Mixing incompatible greases will cause the mixture to harden, preventing it from releasing any oil. Mixing incompatible greases can also soften the mixture, which releases all the oil. In either case, the mixture will not be able to properly lubricate the bearing. We strongly recommend using the same type of grease originally provided with the bearing.