Aftermarket M22 x 1.5 Spring-Return Pump Element
This page describes an aftermarket spring-return piston pump element that cross-references the M22 x 1.5 element used in DZGK-series and compatible Lincoln pumps. This is an aftermarket element, not manufactured, sponsored, or endorsed by any original equipment maker. Lincoln is a trademark of its respective owner.
The element converts pump drive motion into metered lubricant discharge. An internal spring returns the piston after each pressure stroke. It is a nominative replacement part for pump heads with M22 x 1.5 ports.
How the Element Works
During the pressure stroke, the cam or drive advances the piston, compressing the spring and displacing a fixed volume through the outlet. On the return stroke, the spring returns the piston, drawing fresh lubricant in through the inlet check. The cycle repeats with the pump drive. Fixed output is determined by piston diameter and stroke geometry.
Specifications
| Thread | M22 x 1.5 male |
| Piston diameter | 8 mm standard, 6 mm and 7 mm optional |
| Max pressure | 300 bar (4,350 psi) |
| Continuous operating pressure | up to 280 bar |
| Rated flow | 0.8, 1.3, 1.8, 2.5, or 5.0 cm3/min at nominal cycle rate |
| Outlet | R 1/4 or 6 mm hose barb |
| Return mechanism | spring-loaded piston |
| Material | hardened steel body and piston |
| Compatible pumps | DZGK series and Lincoln pumps with M22 x 1.5 element ports |
M22 Versus M20 Elements
M22 x 1.5 elements serve DZGK and Lincoln-style interfaces. M20 x 1.5 elements serve SKF and BEKA style pump interfaces. The threads are different sizes and are not cross-compatible. Confirm the element port on your pump head before ordering. A visual size match is not enough.
Piston Sizes and Output
The element is available with 6, 7, and 8 mm pistons. Output options range from 0.8 to 5.0 cm3/min. Output depends on piston diameter, stroke geometry, and cycle rate. The values cm3/min and cm3/stroke are not interchangeable without the cycle frequency. Use the same piston size as the removed element unless recalculated. The 5.0 cm3/min variant may have a lower pressure limit, so confirm the rating for the exact variant.
What to Confirm Before Ordering
Confirm the pump uses M22 x 1.5 element ports, not M20. Confirm piston diameter from the old element. Confirm required output in cm3/min or cm3/stroke. Confirm outlet connection R 1/4 or hose barb. Confirm whether a safety valve is included or ordered separately. See the pump element range and compatible grease pump options. If your port size or output is unclear, contact the team with the old element details.
Frequently Asked Questions
Is M22 the same as M20?
No, M22 x 1.5 fits DZGK and Lincoln interfaces while M20 x 1.5 fits SKF and BEKA interfaces. The thread sizes are different.
Which piston size do I need?
Use the same piston size as the removed element unless the output was recalculated. Piston sizes are 6, 7, and 8 mm.
Can output be adjusted?
No, output is fixed by piston and geometry. Adjustable elements are different products.
What pressure does this element handle?
Max pressure is 300 bar. Continuous operating pressure is up to 280 bar.
What outputs are available?
Rated flow options are 0.8, 1.3, 1.8, 2.5, and 5.0 cm3/min. Output depends on piston size and cycle rate.
What is the difference between cm3/min and cm3/stroke?
The values are not interchangeable without cycle frequency. Confirm which one your pump data uses.
Is a safety valve included?
Confirm before ordering. Some variants include a safety valve, while others require it separately.
Will it fit my Lincoln pump?
Only if the pump port is M22 x 1.5. Check the element port before ordering.
What outlet connection is available?
The outlet is R 1/4 or 6 mm hose barb. Confirm which connection your system uses.
Who builds this element, and how do I get a quotation?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
Contact the team with your pump model and piston size.
