Avoiding excess lubrication is important if you use a grease gun. While applying grease minimizes wear of parts and bearing, over-lubrication can reduce a component’s life expectancy. For instance, too much grease can increase running temperatures and lead to energy losses. That is because too much grease will cause the components to push the excess lubricant away.
Chemical Degradation and Oil Bleed
When this occurs, the chemical degradation of the lubricant increases, including the oil bleed rate. As result, the oil and thickener separate. Ultimately, the thickener will form into a crusty build-up that will prevent new grease from accessing a component’s core. In turn, a component or bearing will no longer work.
Avoiding Excess Lubrication by Using Less Pressure
Avoiding excess lubrication is also important for maintaining a part’s seal. Grease guns are capable of producing as much as 15,000 psi. Therefore, the seal can burst, permitting contaminates to get into a bearing’s housing. Excess pressure and over-lubrication simply make it easy for any crusty-build-up to break away and cause damage.
Schedule a Regular Maintenance Program
So, if you want to prevent any kind of over-greasing, you need to schedule a regular program of maintenance. Setting up this routine will make it possible for you to track each lube point. If you work in a manufacturing facility, keep accurate records for future maintenance and inspection.
Once you set up a regular schedule, you need to determine the number of applications and volume of lubricant that needs to be applied at each point. Typically, the grease that is needed is calculated by the dimensions of a bearing housing or a bearing. In order to make this determination, use the following calculation: G = 0.114 x D x B.
In this case, “G” represents the volume of grease in ounces, “D” equals the diameter of a bore in inches and B equals the width of a bearing in inches.
Check for Issues of Over-lubrication
The above calculation can assist you in avoiding over-lubrication when handling the greasing for machinery. When checking the machines then, make sure the spaces around a fill and the relief fittings are clean. Remove excess grease, as well, by permitting a motor to run before and after greasing.
Measures to Follow
You can also avoid over-lubrication by practicing the following measures:
- Stop greasing if you note back pressure that is not normal.
- Check to see that the exhaust ports on a machine are free from debris, including hard crust.
- Slowly pump the lubricant into a machine’s bearings for several seconds. Do not use a quick-lever action. Doing so can lead to damaged seals. In addition, this type of action prevents proper distribution of the grease throughout a bearing.
Switch Out Your Grease Gun
You may also want to replace the type of grease gun you are using. Grease guns that features shut-off grease fittings, relief vent plugs, or pressure gauges can help you prevent over-lubrication.
Consider the Output per Stroke
You also have to remember that different grease guns require different delivery amounts. For instance, a regular delivery rate for a grease gun is 30 strokes for each ounce. So, a higher or lower volume grease gun could damage a bearing if the output per stroke is not considered.
While some people tend to keep pumping until they see grease seeping out of a component, that still may be too much. Too much grease or viscosity can cause additional friction. When this happens, the heat will build up inside a bearing or part.
Assembly and Disassembly of a Grease Gun
You can also have an over-lubrication issue if you do not assemble or disassemble a grease gun property. To properly connect and disconnect a grease gun, you should do the following:
- Wipe each fitting clean before lubricating it.
- Operate the lever gun handle, taking care not to use additional pressure or an excess volume of grease.
- Turn the coupler, after greasing, at a slight angle. This will release the grasp of the coupler’s jaw. Push the coupler on a fitting, slightly angled, then center it on the fitting. The wrong amount of grease may be applied if the fitting does not properly receive the lubricant.
When using a grease gun, notice the positioning of the plunger seal. If you switch from using grease in cartridges instead of bulk or vice versa, this is important. Again, less is often more when you are handling a grease gun. Use moderation when using the tool.