Installation and removal of SKF 623single row deep groove ball bearings

Bearing type single row deep groove ball bearings

Selected bearings SKF 623

 

Mechanical Installation

 

 International standard units (metric)     Imperial units (inch / lb)   

Before starting work, carefully read the entire contents of the instructions for use. A variety of optional tools and methods of measurement are

included in the instructions for use.

Most bearing of the illustrations are not proportionate and practical design.

The instructions apply only to SKF bearings.

When selecting the tools recommended in the instructions, verify its availability according to the actual size of the bearings and other

components.

Mounting and dismounting of rolling bearing sometimes relates to: moving of heavy objects, use of tools and other devices, or the use of the high-

pressure oil. To avoid accidents, the human body injury or property damage, please comply with the instructions carefully.

-------------------------------

Notes

Install bearings in a clean environment. Check the bearing housing, shaft and bearing components to ensure that it is clean.

The bearings should be left in the original packaging until the moment before installation to prevent pollution.

Size and shape tolerances of all components in contact with the bearing should be checked.

The diameter of cylindrical shaft neck, usually uses a micrometer to measure each of the four points of the

three planes. Survey record forms can be obtained here. Filling out the measurement records and archives

appropriately helps future tracking.

The bore diameter of the cylindrical bearing box, usually uses inner gauge to measure each of the four points

of the three planes. Survey record forms can be obtained here. Filling out the measurement records and

archives appropriately helps future tracking.

Install Program

Wipe off the rust inhibitor in bearing bore and the cylindrical surface.

If bearings greased and use in extremely high or low temperatures, or grease and rust inhibitors are not compatible, it need to be carefully cleaned and

dried.

Axis is an interference fit

Slightly lubricate the hole of the bearing with mineral oil.

Ensure that the bearing is vertical with axis after installed.

When installing, use appropriate sleeve to force on the inner ring.

The bearing box for the interference fit

Slightly lubricate the outer peripheral surface of the bearing with mineral oil.

Ensure that the bearing is vertical with bearing box after installed.

When installing, use the appropriate sleeve to force on outer ring.

Shaft and bearing box for interference fit

Slightly lubricate the inner-hole of the bearing with mineral oil.

Slightly lubricate the outer peripheral surface of the bearing with mineral oil.

Ensure that the shaft and bearing box are perpendicular to the axis after adapted and installed.

When installing, use the appropriate sleeve to force on the inner and outer rings at the same time.

Push the bearing to the correct location.

Fit with locking devices.

Determine shaft or outer ring can easily turn.

Bearings lubricate using oil, pay attention to use the correct lubricants and dosage.

Bearings lubricate using grease, be coupled with the grease.

If the bearing is to be put into the shaft and the bearing box both, grease may needs to earlier be added.

Under normal circumstances, this bearing should be completely filled grease, except applied to high speed. Fill grease in the remaining space in the bearing

box (approximately 30-50%).

SKF grease LGMT 2 can be used for the general working conditions. Considering the actual working conditions to select grease, see SKF condensed

grease selection guide.

Bearing type single row deep groove ball bearings

Selected bearings SKF 623

 

Thermal installation

Axis for the interference fit

 

International standard units (metric)    Imperial units (inch / lb)   

Before starting work, carefully read the entire contents of the instructions for use. A variety of optional tools and methods of measurement are

included in the instructions for use.

Most bearing of the illustrations are not proportionate and practical design.

The instructions apply only to SKF bearings.

When selecting the tools recommended in the instructions, verify its availability according to the actual size of the bearings and other

components.

Mounting and dismounting of rolling bearing sometimes relates to: moving of heavy objects, use of tools and other devices, or the use of the high-

pressure oil. To avoid accidents, the human body injury or property damage, please comply with the instructions carefully.

-------------------------------

Notes

Install bearings in a clean environment. Check the bearing housing, shaft and bearing components to ensure that it is clean.

The bearings should be left in the original packaging until the moment before installation to prevent pollution.

Size and shape tolerances of all components in contact with the bearing should be checked.

The diameter of cylindrical shaft neck, usually uses a micrometer to measure each of the four points of the

three planes. Survey record forms can be obtained here. Filling out the measurement records and archives

appropriately helps future tracking.

The bore diameter of the cylindrical bearing box, usually uses inner gauge to measure each of the four points

of the three planes. Survey record forms can be obtained here. Filling out the measurement records and

archives appropriately helps future tracking.

Install Program

Wipe off the rust inhibitor in bearing bore and the cylindrical surface.

If bearings greased and use in extremely high or low temperatures, or grease and rust inhibitors are not compatible, it need to be carefully cleaned and

dried.

Heat the bearing.

You can use electric hot plate, such as SKF 729659 C.

Furnaces can be used. Place the bearing on bracket to enable free movement of air around the bearing.

Under normal circumstances, bearing temperature is higher than the axis of 80 to 90 ° c (144 to 162 ° f) is enough to install.

The heating temperature is not higher than 125 ° c (257 ° f), you should not use an open flame heating.

Wear antifouling gloves to extract the bearings after heating.

Mount the bearings on the shaft and pushed onto the shaft at the shoulder, holding position until it is

tightened on the shaft.

Fit with locking devices.

Determine shaft or outer ring can rotate easily.

Bearings lubricate using oil, pay attention to use the correct lubricants and dosage.

Bearings lubricate using grease, be coupled with the grease.

If the bearing is to be put into the shaft and the bearing box both, grease may needs to earlier be added.

Under normal circumstances, this bearing should be completely filled grease, except applied to high speed. Fill grease in the remaining space in the bearing

box (approximately 30-50%).

SKF grease LGMT 2 can be used for the general working conditions. Considering the actual working conditions to select grease, see SKF condensed grease

selection guide.

Bearing type single row deep groove ball bearings

Selected bearings SKF 623

 

Thermal installation

The bearing box for the interference fit

 

International standard units (metric)    Imperial units (inch / lb)

Before starting work, carefully read the entire contents of the instructions for use. A variety of optional tools and methods of measurement are

included in the instructions for use.

Most bearing of the illustrations are not proportionate and practical design.

The instructions apply only to SKF bearings.

When selecting the tools recommended in the instructions, verify its availability according to the actual size of the bearings and other

components.

Mounting and dismounting of rolling bearing sometimes relates to: moving of heavy objects, use of tools and other devices, or the use of the high-

pressure oil. To avoid accidents, the human body injury or property damage, please comply with the instructions carefully.

-------------------------------

Notes

Install bearings in a clean environment. Check the bearing housing, shaft and bearing components to ensure that it is clean.

The bearings should be left in the original packaging until the moment before installation to prevent pollution.

Size and shape tolerances of all components in contact with the bearing should be checked.

The diameter of cylindrical shaft neck, usually uses a micrometer to measure each of the four points of the

three planes. Survey record forms can be obtained here. Filling out the measurement records and archives

appropriately helps future tracking.

The bore diameter of the cylindrical bearing box, usually uses inner gauge to measure each of the four points

of the three planes. Survey record forms can be obtained here. Filling out the measurement records and

archives appropriately helps future tracking.

Install Program

Wipe off the rust inhibitor in bearing bore and the cylindrical surface.

If bearings greased and use in extremely high or low temperatures, or grease and rust inhibitors are not compatible, it need to be carefully cleaned and

dried.

If possible, put bearing box into a furnace heating, otherwise use a propane heater.

Under normal circumstances, bearing temperature is higher than the axis of 80 to 90 ° c (144 to 162 ° f) is enough to install.

Wear antifouling gloves to extract the bearings after heating.

Mount the bearings on the shaft and pushed onto the shaft at the shoulder, holding position until it is

tightened on the shaft.

Bearings lubricate using oil, pay attention to use the correct lubricants and dosage.

Bearings lubricate using grease, be coupled with the grease.

If the bearing is to be put into the shaft and the bearing box both, grease may needs to earlier be added.

Under normal circumstances, this bearing should be completely filled grease, except applied to high speed. Fill grease in the remaining space in the bearing

box (approximately 30-50%).

SKF grease LGMT 2 can be used for the general working conditions. Considering the actual working conditions to select grease, see SKF condensed

grease selection guide.

Bearing type single row deep groove ball bearings

Selected bearings SKF 623

 

Axis for the interference fit

 

International standard units (metric)    Imperial units (inch / lb)

Before starting work, carefully read the entire contents of the instructions for use. A variety of optional tools and methods of measurement are

included in the instructions for use.

Most bearing of the illustrations are not proportionate and practical design.

The instructions apply only to SKF bearings.

When selecting the tools recommended in the instructions, verify its availability according to the actual size of the bearings and other

components.

Mounting and dismounting of rolling bearing sometimes relates to: moving of heavy objects, use of tools and other devices, or the use of the high-

pressure oil. To avoid accidents, the human body injury or property damage, please comply with the instructions carefully.

-------------------------------

Notes

Disassemble bearing in a clean environment.

Re-installation the bearing without damage in the same position and direction on the shaft. Mark the relative position of each of the bearing, for example,

which part is upward, and which is facing inwardly.

If the bearing is damaged, it may be necessary to check and analysis bearings and other components to identify the cause and take corrective measures. So

you should remove as careful as possible to keep bearing undisturbed.

Study the actual drawings and bearings arrangement.

During the demolition process, ensure that the appropriate support of shaft or bearing box.

Remove program

Remove bearing using the puller.

The following recommendations are based only on the dimension. Removal must take into account the actual tie between components. Corrosion of

component and other conditions could lead to the greater removal force.

If possible, hold the bearing inner ring or adjacent components (such as the labyrinth sealing ring) with puller.

Pull the inner ring with uniform force, until it is completely out of the axle.

Puller should be accurate on center in removal, or it easily damages the journal. Use the puller in center automatically to prevent this situation.

Puller cannot grab the inner ring, seize the outer ring.

If bearings have to be used again or other reasons which prevent bearing damaged, but only the outer ring loads, you must rotate the outer ring to remove.

Fix puller screw, turn the puller removing bearings.

Bearing type single row deep groove ball bearings

Selected bearings SKF 623

 

Bearing box for interference fit

 

International standard units (metric)  Imperial units (inch / lb)   

Before starting work, carefully read the entire contents of the instructions for use. A variety of optional tools and methods of measurement are

included in the instructions for use.

Most bearing of the illustrations are not proportionate and practical design.

The instructions apply only to SKF bearings.

When selecting the tools recommended in the instructions, verify its availability according to the actual size of the bearings and other

components.

Mounting and dismounting of rolling bearing sometimes relates to: moving of heavy objects, use of tools and other devices, or the use of the high-

pressure oil. To avoid accidents, the human body injury or property damage, please comply with the instructions carefully.

-------------------------------

Notes

Disassemble bearing in a clean environment.

Re-installation the bearing without damage in the same position and direction on the shaft. Mark the relative position of each of the bearing, for example,

which part is upward, and which is facing inwardly.

If the bearing is damaged, it may be necessary to check and analysis bearings and other components to identify the cause and take corrective measures. So

you should remove as careful as possible to keep bearing undisturbed.

Study the actual drawings and bearings arrangement.

During the demolition process, ensure that the appropriate support of shaft or bearing box.

Remove program

Remove bearing using the puller.

The following recommendations are based only on the dimension. Removal must take into account the actual tie between components. Corrosion of

component and other conditions could lead to the greater removal force.

Detailed information on puller that is suitable for demolition of the SKF bearing, please contact info.mapro@SKF.com.

If the bearings have to be used again, but only the inner loads, you must turn the inner rings to reduce the chance of damage to bearings in removal.

If there is no holes shoulder in the bearing box, you can remove the bearing by hammering outer ring with

appropriate sleeve. If an interference fit tighter, you may need to use a compressor.

You can use an ordinary hammer, whose head is not soft metals, because it may cause debris and into the bearing.

If the bearing is on the side of shaft, you can use the soft metal punch or puller.

Bearing type single row deep groove ball bearings

Selected bearings SKF 623

 

Shaft and bearing boxes for an interference fit

 

International standard units (metric) Imperial units (inch / lb)  

Before starting work, carefully read the entire contents of the instructions for use. A variety of optional tools and methods of measurement are

included in the instructions for use.

Most bearing of the illustrations are not proportionate and practical design.

The instructions apply only to SKF bearings.

When selecting the tools recommended in the instructions, verify its availability according to the actual size of the bearings and other

components.

Mounting and dismounting of rolling bearing sometimes relates to: moving of heavy objects, use of tools and other devices, or the use of the high-

pressure oil. To avoid accidents, the human body injury or property damage, please comply with the instructions carefully.

-------------------------------

Notes

Disassemble bearing in a clean environment.

Re-installation the bearing without damage in the same position and direction on the shaft. Mark the relative position of each of the bearing, for example,

which part is upward, and which is facing inwardly.

If the bearing is damaged, it may be necessary to check and analysis bearings and other components to identify the cause and take corrective measures. So

you should remove as careful as possible to keep bearing undisturbed.

Study the actual drawings and bearings arrangement.

During the demolition process, ensure that the appropriate support of shaft or bearing box.

Remove program

The best method is to let the bearing with shaft pressed out of the bearing box.

This method can ensure there is no force on the rolling elements in removal.

Other choices

Use the bolt on bearing box cover, with a special metal plate on the side of the bearing, and press the bearing

out of the box with the axis.

According to the "shaft for interference fit" or " bearing boxes for interference fits" ,remove the bearing and other components from the bearing box or the

shaft.