Improve grease application with a dispenser!
Case study Improve grease application with a dispenser!
Key points of this case study
(1) Understand common challenges when applying grease with a dispenser.(2) Understand dispenser options based on your purpose.
(3) Understand specific application and implementation examples.
Purpose of grease application
Grease is applied to smooth the sliding movement between parts. If there is too much grease, it takes time and effort to wipe off the excess, leading to wasted material and increased costs. Conversely, if there is too little grease, it can change the operating feel of switches or cause product defects. However, unlike adhesives, grease does not fix parts together, so the importance of capital investment in equipment is sometimes overlooked.
| Too much grease | Too little grease |
|---|---|
| Increased work to wipe off excess | Affects the operational feel of switches, etc. |
| Incurs unnecessary material costs | Creaking sounds and other issues occur, leading to malfunctions |
Case 1
Improve variations in grease application amount!
Factors causing variations in grease application volume
Unlike adhesives, grease does not cure, so it is often thought of as a liquid with a stable viscosity. However, many types of grease have the property of decreasing in viscosity when transitioning from a static state to a flowing state (thixotropy). Even if the dispensing conditions are constant, this change in viscosity can cause the dispensing volume to fluctuate.
Two products suitable for precise grease application
The two types of dispensers that can dispense a fixed volume from a dispenser regardless of the material's viscosity are
(1) Plunger Pump System MPP and (2) Mohno System MOHNOMASTER.
These dispensers enable precise, quantitative grease application.
The differences in their features are as follows.
| MPP | MOHNOMASTER | |
|---|---|---|
| method | plunger pump | Mono |
| dispensing accuracy | ★★★ | ★★☆ |
| dispensing speed | ★★☆ | ★★★ |
| running costs | ★★☆ | ★☆☆ |
Case 2
Automate grease application in hard-to-reach areas!
Challenges in automatic grease application
In many cases, the area where grease is applied is where parts fit together, making it a difficult-to-access location. Therefore, dispenser needles or nozzles may have difficulty reaching these areas, which can be a barrier to automating grease application.
Jet dispensers excellent for application in narrow areas
Jet dispensers can apply grease from a distance without needing to insert a needle or nozzle into a narrow area. Furthermore, since the application direction is not limited to straight down, dispensing can be performed even in hard-to-reach application locations.
Two points for improving application reliability
Refilling grease is not only time-consuming, but it can also introduce air bubbles into the liquid during the process, leading to application defects. When using a jet dispenser, we offer a tank pressure-feed system and a pail can application system as a set, which allows for direct setup using the grease can as is.
Even if air bubbles do enter the liquid, using a miss-shot detection unit in combination allows for the detection of empty shots.
Note: Compatible with AeroJet series only
Case 3
Reproduce brush application of grease with spray technology!
Examples where automatic grease application with a dispenser is not possible
Dispensers apply grease in dots or lines. Therefore, they cannot apply grease in a short time to areas with a width of 10mm or more, such as rail-shaped parts. Even if you attempt to use a spray valve to apply grease to widen the application shape, the high viscosity of the grease makes it difficult to spray, causing the grease to scatter and preventing you from achieving satisfactory quality.
Spray valves that enable wide-area, batch grease application
The SSV-1 spray valve developed by our company has enabled spray application of high-viscosity liquids by improving the air flow path for atomization compared to conventional models. This allows for wide-area grease application to be achieved in a short time, while also enabling consistent control of grease thickness and volume.
Grease Application Sample Comparison
Summary
| Case Study | 1 | 2 | 3 |
|---|---|---|---|
| Challenges | variation in dispensing amount | nozzle access | simultaneous application over a wide area |
| Solution | Volumetric Dispenser | Jet Dispenser | High-Viscosity Compatible Spray Valve |
| Products |
 |
|
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We have introduced three examples based on challenges in grease application. Please feel free to contact us via the link below for tests or to borrow a demo unit.
PROPOSED PRODUCTS
Proposed Products
OTHER CASES
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