Use Just Enough: Don’t overfill when you grease Zerk fittings. Usually, three or four pumps of grease are enough and over-greasing a joint pushes grease out the aforementioned seals, which attracts dust, sand, and dirt. Contaminated grease can damage moving parts, so avoid having excess squish out the seals.
How much grease do you put in a Zerk fitting?
Use Just Enough: Don’t overfill when you grease Zerk fittings. Usually, three or four pumps of grease are enough and over-greasing a joint pushes grease out the aforementioned seals, which attracts dust, sand, and dirt. Contaminated grease can damage moving parts, so avoid having excess squish out the seals.
How do you know when a grease fitting is full?
If this is the case, the best tactic is to “feel” the grease into the bearing cavity until slight resistance or back pressure is felt against the trigger, or lever, signaling the bearing cavity is now full.
How often should you grease Zerks?
I usually grease every every 3000 miles.How do Zerks work?
The Zerk is really a valve that opens under the force of the grease lubricant, then closes again when the grease gun is removed. The ball returns to its closed position, preventing grease from escaping and not allowing dirt and debris into the bearing. … That idea of a check valve should not seem strange.
Why does my grease gun get stuck on the fitting?
Grease guns get stuck on fittings due to clogged zerk fittings which don’t let the grease pass through and cause a pressure build up that prevents them from releasing. So to get it unstuck unscrews the hose or hardline from the gun which will release the pressure and allow it to come off.
What are Zerks?
A grease fitting, grease nipple, Zerk fitting, grease zerk, or Alemite fitting is a metal fitting used in mechanical systems to feed lubricants, usually lubricating grease, into a bearing under moderate to high pressure using a grease gun.
When should I replace my grease fittings?
Occasionally, the tip of the grease fitting will break off if it is hit by road debris or rocks. When this happens it is necessary to change the grease fitting as soon as you notice it is broken. Grease fittings are available at auto parts stores.What sizes do grease Zerks come in?
The most common standard grease fitting size is 1/4″‑28 SAE‑LT and is often used in automotive applications. They can also be found in agricultural environments as well as other various standard duty applications. For heavy duty applications, larger 1/8″‑27 PTF zerk fittings can be found.
How do you unplug a grease ZERK?The first is to apply a heat source and immediately attach a grease gun to the fitting and push the old grease out after it has been warmed and thinned out. Another solution is to find a dispensing mechanism that can push a light solvent into the joint and remove the blockage.
Article first time published onWhat is the highest pressure grease gun?
SAE Products P/NGUN-HP2Cylinder Capacity12 oz.Stoke Delivery1oz per 18 StrokesMax Pressure15,000 psiLoadingStick or Bulk
Can you over grease a bearing?
When it comes to regreasing bearings, more is not always the better option and actually can be a costly mistake. … Too much grease volume (overgreasing) in a bearing cavity will cause the rotating bearing elements to begin churning the grease, pushing it out of the way, resulting in energy loss and rising temperatures.
How do you use a grease gun on ZERK?
- Purchase a grease gun with a zerk fitting on the end of it. …
- Press the end of the grease gun on the end of the zerk fitting. …
- Pump the grease gun.
- Stop pumping when you see grease squeeze out the edges of the ball joint.
How do you know when to stop with a grease gun?
For example, estimate the number of inches in the shaft. Multiply that number by itself to get a rough estimate of the number of shots from the grease gun. Apply the last half of these shots slowly, and at the point that you begin to experience resistance, stop pumping.
Are there different size grease gun couplers?
Grease fittings come in many different styles. There are two grease fittings that are very common. These are the 1/4″-28 thread and the 1/8″ NPT thread. However, there are other less common grease fitting threads in use.
Are grease fittings metric?
Metric Grease Fittings are available in both regular and stainless steel. Metric Grease Fittings are also referred to as Metric Zerk Fittings, Metric Lubrication Fittings, Metric Hydraulic Fittings, and Metric Zerks.
What thread pitch are Zerk fittings?
1/4″-28 Taper Thread Grease Fittings, 1/4″-28 Zerk Fittings, Taper Thread Grease Fitting.
What size Tap do I need for a grease ZERK?
Fitting Thread SizeTap Drill Selection For Standard Thread FittingsDrill Size Selection for Spin Drive Fittings1/4″-28#3 (for soft metal use #5)”A” – .234″ Dia.5/16″-329/32″ (for soft metal use “J”)-1/8″ Pipe11/32″ (for soft metal use “R”)3/8 – .375″ Dia.*1/4″ Pipe7/16″-
Why is it called a grease ZERK?
The Zerk design, named after Oscar Zerk, used a fitting much smaller than the Alemite pin-type and did not lock the hose coupler or hand gun and fitting together. Instead, the seal between them was maintained by the pressure of a pushing action when the operator applied the coupler to the fitting.
How often should you grease fittings on a tractor?
Extremely Wet and Muddy Conditions – Lubricate machine grease fittings (A) every 10 hours of operation or on a daily basis. All Other Conditions – Lubricate machine grease fittings every 50 hours of operation.
How often do you grease a bush hog?
It is recommended to grease standard universal joints every 20 hours or 8 hours for severe conditions. Remember! Grease follows the easiest path through internal ports to the four cross bearings.
How often should I grease my tractor?
In it you may find suggested intervals during periods of normal usage of something like every 50 hours. In extreme mud and/or wet conditions, those intervals might be reduced to every 10 hours of use or daily, whichever comes first.
Are John Deere grease fittings metric?
21 assorted metric grease fittings in nine of the most popular styles and sizes are contained in an easy-to-handle, sturdy plastic box with six separately labeled and illustrated compartments. … John Deere grease fittings are manufactured to the most stringent quality standards and are heat-treated to SAE specifications.
How do you use a Zerk Zapper?
Simply fill this tool with a light solvent, attach the tool to the clogged zerk, and tap the piston head with a hammer. The hydraulic action along with the increasing pressure from the tool will clean the zerk. The dried grease and dirt will be flushed from behind the zerk.
