How To Install Bearings On A Shaft
Ball Bearing Installation
Skill Level: Intermediate | Special Tools: None
Below are the steps detailing proper installation of ball bearings.
Internal Clearance
In the manufacture of ball bearings, standard practice indicates assembling the rings and balls with a specified internal clearance. This feature proves necessary to provide pre-engineered clearance to compensate for the tight fit furnishings of press fitting the bearing rings on shafts or housings at installation. Internal clearances recoup for thermal expansion of bearings, shafts and housings or for a contact angle in the bearing later on installation. Radial clearance used to create a contact angle is typically used in athwart contact ball bearings. Radial measurement is accepted as the more significant characteristic because it is more straight related to shaft and housing fits. Plus, the American Begetting Manufacturers Association (ABMA) prescribes this method.
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Proper Installation Procedures
Exert boring, fifty-fifty strength against the rings when installing a bearing. When installing a bearing tight fit on a shaft, the force per unit area should be applied against the inner ring. When installing a begetting tight fit in a housing, you should apply pressure against the outer band. Below are three dissimilar guides for installing ball bearings.
Proper Shaft Installation
Support the bearing'due south inner band every bit the shaft is pressed into the begetting.
Proper Housing Installation – Rotating Housing and Loose Shaft
Printing through the outer band to overcome the tight fit between the outer ring and the housing bore. In this scenario, the shaft does not rotate and fits loose in the inner ring, while the outer ring is tight and rotates.
Proper Simultaneous Housing/Shaft Installation
Press through both rings simultaneously to overcome the tight fit on the shaft and/or housing. In this scenario, the shaft is already in place. Brand sure the bearings on the other end of the shaft are properly supported, not damaged and that there is no contact with the begetting cage. Any bent bearing cage is unusable. A Timken® Conrad deep-groove ball bearing is a standard single-row, deep-groove bearing. Information technology also is referred to as a radial ball begetting. This type of Timken ball begetting is capable of handling radial and axial loads. A broad variety of sizes are bachelor in extra-light to heavy series. Diverse shield and seal configurations assistance protect internal begetting components and retain lubricants. The various types of damage that may occur in ball bearings are basically the aforementioned as damage that may occur in other anti-friction bearings, including cylindrical, spherical, needle and tapered designs.
Alert Failure to observe the post-obit warnings could create a run a risk of death or serious injury.
Practise not attempt to disassemble and reassemble unitized bike finish hubs and bearing assemblies. Improper reassembly could lead to failure.
Proper maintenance and handling practices are critical. Always follow installation instructions and maintain proper lubrication.
Tensile stresses can be very high in tightly fitted bearing components. Attempting to remove such components by cutting the cone (inner race) may result in a sudden shattering of the component causing fragments of metal to be forcefully expelled. Always use properly guarded presses or bearing pullers to remove bearings from shafts, and always utilise suitable personal protective equipment, including rubber glasses.
CAUTION Failure to follow these cautions may result in property impairment. The products cataloged are application specific. Whatever utilize in applications other than those intended could lead to equipment failure or to reduced equipment life. Use of improper begetting fits may cause damage to equipment. Exercise non use damaged bearings. The use of a damaged bearing can result in equipment damage.
TechTips is not intended to substitute for the specific recommendations of your equipment suppliers. Every reasonable endeavour has been fabricated to ensure the accuracy of the information contained in this writing, but no liability is accepted for errors, omissions or for any other reason.
Source: https://www.knowyourparts.com/technical-resources/hubs-bearings/ball-bearing-installation/
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