Dayton Die Cushions - High Pressure Plumbing

All Dayton Pneumatic Die Cushions are thoroughly lubricated at the factory prior to shipment. It is advisable, however, to lubricate each fitting until grease emerges from between the piston and cylinder walls before cushion is put into operation. The same procedure should be followed after every 8 hours of operation. If the cushion is permitted to stand idle for a period of two or three weeks, the grease may dry out and as a result the packing will become hard and will possibly cause an air lack until it has softened up sufficiently. It may be necessary in some cases to inject grease into the lubrication system to soften up these packings so that they will retain their resiliency. A standard automotive pressure grease gun can be used an all lubricating fittings on Dayton pneumatic die cushions.

Pressure fittings are located either at the front or on the side of each individual model C, D, MC and MC the cushion piston. They are installed at the factory prior to shipment.

On some installations, particularly in the larger sizes, the press bed is so constructed that the grease fittings are not accessible. The lubrication of the cushion unit on installations of this type can be easily provided for by centralized lubrication. The centralized lubrication system consists of a header block and 3/16" copper tubing that connects this header block directly to the die cushion unit. The header block is provided with as many grease fittings as there are in the complete cushion installation. These header blocks can be placed in any convenient location on the press and will permit easy and positive lubrication of all the necessary points on the cushion units. In addition to the copper tubing, all other fittings required for making the complete installation are furnished. This principle can be applied equally to both low and high pressure installations.

After centralized lubrication system has been installed, fill the lines with grease until it emerges from between the piston and cylinder walls. Check again after 8 hours operation to see how many shots are necessary to again cause grease to emerge. Thereafter lubricate this amount every 8 hours of operation.