Tormach PCNC 440 - Lubrication System

Chapter 9
159
UM10372_PCNC440_Manual_0221A
MAiNTENANCE
9.1.1 Rust Prevention
Exposed iron and steel surfaces will rust if proper care is not taken to protect them. The following
recommendaons will slow or reduce the onset of surface rust.
• If possible, install the PCNC mill in a temperature- and humidity-controlled environment.
• Always use a ood coolant recommended for machining; never use water or a coolant that
does not contain rust inhibitors. When using a water-based coolant, always mix the coolant
concentrate to the diluon rao recommended by the coolant manufacturer.
• If the mill is not used for more than 72 hours, apply a light mist of water repellent oil such as
WD-40 to the exposed bare metal surfaces.
• Apply way oil or machine oil directly to the table surface under trapped areas like a vise or
xture on the mill. Light surface rust on the table can be removed with a machinist’s stone.
9.1.2 Way Covers
Way covers serve an important funcon – they keep chips and abrasive debris from damaging the
slideways. Clean and inspect the way covers per maintenance schedule.
9.1.3 Flood Coolant System
Regular maintenance of the ood coolant system will prolong the service life of the coolant pump.
• Collect tramp oil in the tank with an absorbent pillow or a mechanical oil skimmer. Replace
pillows as needed.
PN Description
31925 Floang Tramp Oil Collecon Pillow
35244 Skimpy Oil Skimmer Kit
• Coolant can scum if allowed to sit for a prolonged period; replace as needed.
• Check the impeller for obstrucons.
• Clean coolant reservoir regularly.
NOTE: Check with local authories on proper handling and disposal of new and used coolant.
9.1.4 Lubrication System
The lubricaon system distributes oil to 15 points throughout the mill. This includes the 12 sliding
surfaces (four each on the three axes) and three ball screw nuts – some of the most crical and
expensive mechanical parts of the mill. Any dirt or foreign material suspended in the oil is going to
be delivered directly to these parts and can dramacally shorten the operaonal service of the mill.
• Use only new, high quality ISO VG 68 grade Machine Oil.
PN Description
31386 Tormach WL-68