Injection oiler
SKF Lubrication Systems Germany AG

Injection oilers and micropumps are pneumatically operated piston pumps with delivery rates of 3mm³ to 90mm³ per actuation. Each lubrication point has its own injection oiler outlet port, or one micropump.

How they work
The delivery rate is either fixed or adjustable in increments, depending on the type. Each injection oiler element or micropump can be directly controlled by a compressed-air valve. Because of the small amount of actuating air required, the metered quantity of lubricant is delivered at high speed. The lubricant can be fed to the suction port either non-pressurised or under an admission pressure of up to 0.3 MPa.

Lubricants: The spectrum of lubricants used ranges from non-aggressive fluids to water and oils having an operating viscosity >10mm²/s right up to NLGI grade 2 lubricating greases.

Applications
Injection oilers and micropumps are used in small centralized lubrication systems for 1 to 12 lubrication points. Their individual control systems and very short response times make injection oilers and micropumps suitable for a whole range of special applications, e.g.

* Assembly oiling or assembly greasing (for installation of assembly parts, prevention of frictional corrosion)
* Chain lubrication
* Minimal quantity lubrication
* Oil+air lubrication systems
* Oiling of air for compressed air tools

Types
Injection oilers are available as single and three port devices. Group control and individual control are possible with the three port devices.

Micropumps are generally positioned next to each other on base plates. The connections required for the lubricant and compressed-air control function are located in the base plate.