What sizes do grease Zerks come in?
What sizes do grease Zerks come in?
The most common standard grease zerk 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 grease zerk fitting sizes can be found.
Are all grease Zerks the same size?
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.
Can you over grease Zerks?
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.
Do they make metric grease Zerks?
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 size hole do I drill for a grease fitting?
Grease Fitting Thread Size
| Fitting Thread Size | Tap Drill Selection For Standard Thread Fittings | Drill Size Selection for Spin Drive Fittings |
|---|---|---|
| 1/4″-28 | #3 (for soft metal use #5) | “A” – .234″ Dia. |
| 5/16″-32 | 9/32″ (for soft metal use “J”) | – |
| 1/8″ Pipe | 11/32″ (for soft metal use “R”) | 3/8 – .375″ Dia.* |
| 1/4″ Pipe | 7/16″ | – |
What thread pitch is a grease ZERK?
SAE Products 1/8″ pipe thread grease fittings are commonly referred to as 1/8″ pipe thread zerk fittings.
How often should you grease Zerks?
I usually grease every every 3000 miles.
How much grease should you put in a grease fitting?
How Much Grease Is Enough?
- Rule of Thumb #1: G = DB/10. This rule of thumb uses the formula G-DB/10 where D=shaft diameter (in.), B=bearing width (in.), and G=ounces of of grease.
- Rule of Thumb #2: One Stroke per Inch of Shaft. This rule of thumb depends entirely on the grease gun.
- Rule #3 – Feel and Listen.
Do modern cars have grease nipples?
Just about every automaker has relegated grease-fittings to the museum and instead opted for permanently lubricated designs for such things as steering tie rod ends and suspension ball joints.
What size Tap do I need for grease fitting?