What Quicklinc Nylon Fittings Are
Quicklinc is the Lincoln push-to-connect connection system for centralized lubrication lines. The nylon-tube branch serves lower-pressure lubricant distribution lines, while the steel hose-stud branch serves high-pressure grease lines around 350 bar class. This aftermarket range covers the nylon-branch push-in fittings used to connect nylon tubing to lubrication components.
Selection starts with one rule: match the branch to line pressure. If your line feeds metering devices and lubrication points at low pressure, the nylon branch is the correct choice. If the line carries grease-gun injection pressure, move to the steel hose-stud branch instead.
How Push-In Connections Work
Each fitting uses a release collar, a stainless gripping collet, and elastomer seals. The collet bites into the tube OD when the tube is pushed home, and the seals form the pressure boundary around the tube. No thread sealant or hose clamp is needed on the tube side.
Tube preparation is simple. Cut the nylon tube square, deburr the end, push the tube in until it seats, then tug to confirm grip. To release, press the collar flat against the body while withdrawing the tube. The connection is tool-free on the tube side.
Choosing Tube and Fittings
Common tube sizes are 1/8 in and 1/4 in OD nylon tubing. The fitting must match the tube OD exactly, so check the marking on your existing tube before ordering. Styles include straight and elbow bodies, but exact style availability varies, so confirm when ordering.
The installed pressure limit is the lowest of fitting, tube, and assembly. Catalog ratings for nylon tubing are higher, for example 625 psig for 1/8 in OD x 0.026 in wall nylon tubing, and fall as tube size rises. In most joints the fitting governs the rating, not the tube.
| 1/8 in OD nylon tube | Typical for short distribution runs to single metering devices |
| 1/4 in OD nylon tube | Typical for longer low-pressure distribution headers |
Pressure and Temperature Limits
Nylon-branch push-in fittings for lubrication lines are typically rated in the 250 psi (17 bar) class per distributor listings. The installed limit is always the lowest of fitting, tube, and assembly, so a higher-rated tube does not raise the joint rating.
Elevated temperatures derate ratings. Confirm temperature limits for the specific style in the catalog before applying these fittings near heat sources or on warm oil lines.
Where They Are Used
Typical service is low-pressure oil and fluid-grease distribution lines feeding metering devices and lubrication points. These fittings are not for grease-gun injection lines; that application belongs to the Quicklinc steel hose-stud fitting branch.
For the straight nylon-branch fitting covered on its own page, see the 244047 straight nylon-branch fitting.
Related Products
Pair these fittings with pressure-rated plastic tubing sized to match the fitting OD. Confirm tube wall thickness and material for your pressure and temperature conditions.
You can also request pricing through the quotation form. List your tube size and port thread so a support engineer can confirm the range.
Lincoln and Quicklinc are trademarks of their respective owners.
This is an aftermarket fitting range, not manufactured, sponsored, or endorsed by SKF.
Quicklinc designations are for cross-reference identification only.
Frequently Asked Questions
What tube sizes do these fittings take?
Common sizes are 1/8 in and 1/4 in OD nylon tubing. Confirm the exact size and style when ordering.
What pressure can they handle?
Nylon-branch fittings are typically rated in the 250 psi (17 bar) class. The installed limit is the lowest of fitting, tube, and assembly.
Can I use them on a grease gun line?
No, grease gun injection lines run far above this pressure class. Use the Quicklinc steel hose-stud branch for high-pressure grease.
Are they rated for vacuum?
Vacuum ratings are not published for this range. Confirm with the catalog if vacuum service matters.
Can fittings be reused?
Yes, inspect the collet and seals for wear before reuse. Replace any fitting with a damaged collar or seal.
What materials are the bodies made of?
Body and seal materials vary by style. Confirm materials for your style when ordering.
How do I release the tube?
Press the release collar flat against the body while pulling the tube out. Support the fitting so the line is not strained.
Do I need tools to install them?
No, installation is tool-free for the tube side. Threaded ports still need normal wrench tightening.
Nylon or steel Quicklinc – which do I need?
Match the branch to line pressure. Nylon suits low-pressure distribution; steel hose studs suit 350 bar class grease lines.
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. List your tube size and port thread so a support engineer can confirm the range.
