What Is a Grease Gun?
A grease gun is a maintenance tool that forces grease through a zerk (grease nipple) fitting into a bearing housing. Available in manual lever-action, pistol-grip, pneumatic (air-powered), and battery-powered configurations for different application volumes and frequencies.
Best Practices
Calculate the correct grease quantity before pumping (formula: Gq = 0.005 x D x B, where D = bearing OD in mm and B = bearing width in mm). Over-greasing causes overheating and seal damage. Under-greasing causes lubricant starvation. See the Grease Selection Guide for the complete procedure.
Frequently Asked Questions
How many pumps of a grease gun equal one gram?
A standard manual lever-action grease gun delivers approximately 1.0-1.5 grams per stroke. Pistol-grip guns deliver about 0.5-0.8 grams per trigger pull. Always calibrate your specific gun by weighing the output of 10 strokes and dividing to get the per-stroke volume.