SKF Grease Injection System (GIS)

Every link counts

GIS - injector

On a chain, every link counts: hundreds or thousands of lubrication points are moving constantly. Chains moving in harsh conditions require frequent relubrication to reduce the risk of chain failure. Unplanned production stoppages due to conveyor chain failure is not an option. Your bottom line is affected by any
unplanned maintenance activity. Manual lubrication can put workers at risk, is extremely time consuming, often is not performed frequently enough and can allow lubricant consumption to get out of control. Worker is your top priority. Also, you do not want your goods to become contaminated with lubricant.

What if you could:

  • Eliminate worker safety risks?
  • Lubricate your chains as often as necessary without production stoppage?
  • Increase chain life and eliminate production stoppage risks due to chain failure?
  • Keep grease consumption under control?
  • Avoid unplanned maintenance downtime?

Select the right lubrication system

GIS for Conveyor trolley rollers

Conveyor trolley rollers
For monorail forged-chain conveyors, the GIS (Grease Injection System) injects grease inside the trolley rollers through the original greaser while the conveyor is running. GIS systems adapt to various conveyor configurations and applications: chain trolley roller greasing or carriage roller greasing (power and free conveyor). GIS systems for trolley rollers enable simultaneous lubrication of two rollers or several carriage rollers.

GIS for Double external roller chains

Double external roller chains
For two-chain conveyors, GIS systems inject grease inside the external rollers on both chain sides through the original nipples while the conveyor is running. These systems adapt to various conveyor configurations and applications while considering sizes and components. GIS systems for double external rollers lubricate both chains simultaneously.

GIS-Single external roller chains

Single external roller chains 

For two-chain conveyors, GIS lubrication systems inject grease inside the external rollers through the original greaser while the conveyor is running. These systems adapt to various conveyor configurations and applications while considering sizes and components. With GIS systems for external rollers, it is possible to lubricate both chains simultaneously.

GIS-Internal roller chains
Internal roller chains

For two-chain conveyors, GIS lubrication systems inject grease inside the internal rollers through the original greaser while the conveyor is running. These systems adapt to various conveyor configurations and applications while considering sizes and components: grease lubrication of internal roller of “simple” chain (with only one lubrication point per link) or “complex” chain (with several lubrication points per link). With GIS systems for internal rollers, it is possible to lubricate both chains simultaneously.

One solution, two systems

GIS grease injection in detail

SKF offers two different systems for lubrication of conveyor chains – both follow the same working principle.

The GIS lubrication system only works when the conveyor is running. During the lubrication phase, when the roller passes in front of the unit, the pick-up system is triggered to let the injection head couple mechanically with the roller. It follows the chain motion while injecting the correct quantity of grease.

At the end of the injection cycle, the head and pick-up system move backwards. The unit returns to its initial position and is ready for a new injection cycle on the next roller. A special feature of the GIS lubrication unit is its ability to follow the chain movement in order to lubricate the lubrication points without interrupting the production process. Therefore, the GIS unit catches the chain. There are several ways to do this including pick-up fingers, sliding arm with fork and capstan.

GIS
GIS systems are the simple solution for lubrication of internal roller chain. The movements required for the injection cycle are mechanically and pneumatically driven. Standard versions of these units, with manual stop and start of the injection phases, need no electrical connections.

GIS+
GIS+ systems are the advanced solution for lubrication of single internal roller chain. These solutions manage and control the lubrication cycles automatically. The systems include a programmable control and monitoring unit with a multilingual interface to monitor correct operation of lubrication phases. The control unit signals possible malfunctions, and displays and sets different lubrication cycle parameters such as injection cycle frequency. GIS+ systems adapt to a broad range of chain speeds as well as various conveyor configurations and roller positions.

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