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Ejector Pin Lubrication Procedure
Lubricating ejector pins is essential to preserve the life of an injection molding tool. The wrong procedure and the wrong lubricant can cause problems and even damage to a tool. Problems such as bleed out (onto the tool surface) can cause defective plastic parts. Thermal and viscosity breakdown can cause galling, seizing, and pitting. All these issues can be resolved if a good lubricant along with the right procedure is utilized.
New Assemblies and Preventive Maintenance Assemblies
Lubricate the back 85% of the ejector pin with Slide Super Grease PT# 43900-03. Then lubricate the remaining front of the pin with a clear lubricant such as Slide Heavy Duty Pin Lube PT#54912. Once this process is complete the ejector pin is ready for installation into the mold. Spray Slide Heavy Duty Pin Lube in the sleeve of the pin area for additional lubrication. And you are now ready to install the pin.
Additional Lubrication
Lubrication must be provided for the front section of the pins periodically. Utilize the Slide Heavy Duty Pin Lube PT#54912 before a production run to insure proper lubrication of the pins. Set your ejector pin selection to manual and move the pins to the out or eject mode. Spray the front of the pins with the Slide Pin Lube, turn your machine back to auto and continue to make parts. This will lubricate the pins and will not affect the mold surface, because the Slide Pin Lube is a fully paintable product. This lubrication will need to be performed at least once a week, but with high-speed molds lubrication may be required before every shift.
For additional lubrication behind the mold, such as on the ejector plate use Slide Super Grease in aerosol form PT# 43916T.
What Does This Procedure Do For You
This procedure prevents a grease product from lubricating the front section of your pins, which can bleed out during a run. The grease bleed out can result from destabilization caused by a mold cleaner, rust preventive, or high temperatures breaking the grease down. With a dry film lubricant placed on the front section of your pins, the chances of such a bleed out occurring are minimized. If a mold cleaner or rust preventive were to break down the pin lubrication, just reapply as stated in the Additional Lubrication section. High temperatures will usually have no affect on dry film lubricants because of their temperature stability.
Try Before You Buy
Using an effective pin lubricant like those offered by Slide will help to reduce rejected parts and prolong tool life. Trial samples of the Slide pin lube are available online at www.slideproducts.com. And unlike many other companies offering pin lubricant, Slide Products has an extensive network of local distributors available to aid you with your mold lubrication. If you are interested, please email your request to Slide Products.