What the 272659 Is
The Lincoln 272659 is a straight Quicklinc push-in fitting offered as an aftermarket replacement. It connects a 1/4 in OD Quicklinc steel hose stud to a 1/8 in NPT male thread on the port side. This SKU belongs to the high-pressure branch of the Quicklinc system, not the nylon-tube branch.
How the Quicklinc Connection Works
The fitting uses a push-in collet mechanism. Push the steel hose stud into the fitting until it seats fully against the body. To release, press the plastic collar against the fitting body while withdrawing the stud. No tools are required for connection or release.
The High-Pressure Quicklinc Branch
Quicklinc has two distinct branches. The nylon-tube branch serves low-pressure oil and grease lines with flexible nylon tubing. The steel-stud branch, which includes this 272659 fitting, serves high-pressure grease distribution lines using reinforced fittings and steel hose studs. For nylon tubing applications, see the Quicklinc nylon-tube branch covered on its own family page. The straight nylon-tube equivalent is the 244047, which also has its own page.
The high-pressure rating belongs to the complete assembly: reinforced fitting, matching steel hose stud, compatible hose, and valve body. Assembled with the matching parts, this branch is used in system pressure classes around 350 bar (5,076 psi). The fitting alone does not carry that rating.
Where It Is Used
Typical installations include Quicklub divider-valve inlets and lubrication points on high-pressure grease lines. The fitting works within centralized grease systems where a steel hose stud connects to a divider valve or bearing point. It is a straight-bodied fitting with no check valve.
Installation Notes
Use a clean, square-cut steel hose stud with no burrs or deformation. Push the stud in until it seats, then perform a tug check to confirm the collet has engaged. Release by pressing the plastic collar against the body while withdrawing the stud. Confirm body material and finish when ordering, and confirm thread torque values for the 1/8 in NPT port side.
Related Products
For nylon-tube Quicklinc fittings, see Quicklinc fittings for nylon tubing. For the straight nylon-tube adapter, see 244047 straight fitting for nylon tubing. For system-level context, see centralized lubrication systems. You can also request pricing through the quotation form.
Lincoln and Quicklinc are trademarks of their respective owners.
This is an aftermarket fitting, not manufactured, sponsored, or endorsed by SKF.
272659 is a Lincoln designation shown for cross-reference identification only.
Frequently Asked Questions
Can I use nylon tubing with the 272659?
No; this is the steel hose stud branch. Nylon tubing uses the Quicklinc nylon branch.
What pressure is the 272659 rated for?
The rating belongs to the complete assembly of fitting, steel stud, hose, and valve. Assembled correctly it serves 350 bar class grease systems.
Does the 272659 have a check valve?
No, this number has no check valve. The 272658 is the check-valve version.
What thread does it have?
1/8 in NPT male on the port side. The tube side accepts a 1/4 in OD steel hose stud.
What is it made of?
The catalog extract does not state the material. Steel construction is typical for this branch; confirm material and finish when ordering.
Can the fitting be reused after removal?
Yes, inspect the stud groove and collet for wear before reuse. Replace the stud if the groove is damaged.
Does it work with KF300 hose?
Yes, it accepts the matching Quicklinc steel hose studs used with KF300 hose. Confirm the hose rating in the hose documentation.
What is the difference between 272658 and 272659?
The 272658 includes a check valve; the 272659 does not. Port and stud sizes are otherwise the same.
Where is this fitting typically installed?
Quicklub divider valve inlets and lubrication points on high-pressure grease lines. It is a straight-bodied fitting.
How do I order or get support?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
You can also request pricing through the quotation form. Include your part numbers and quantities so a support engineer can confirm the fit.
