What the 223-12270-7 Fitting Is
The Lincoln 223-12270-7 is a straight screw-in fitting for 6 mm tubing with an R 1/8 tapered port. SKF lists the equivalent designation GE 6 LLR 1/8 K for the same form. This fitting carries no metering function; it only joins tubing to a divider port in a central lubrication system. This site supplies aftermarket replacement alternatives, not Lincoln or SKF production.
Listed Specifications
The published form includes a steel body, an R 1/8 tapered port, and a 6 mm tube connection.
- Material: steel
- Grade and plating: not published; confirm finish on quotation
- Port: R 1/8 tapered BSPT form
- Tube: 6 mm
- Equivalent designation: GE 6 LLR 1/8 K
One reseller claims “up to 100 bar” for this fitting. Treat that claim as an insufficient single-listing figure. Fit and function follow the SSV divider assembly the fitting serves; confirm pressure suitability against the SKF documentation for the specific divider.
Where SKF Lists It: SSV Assemblies
SKF fitting-kit documentation lists this style as an inlet fitting for SSV, SSV-E, SSVM, SSVD, and SSVD-E progressive divider assemblies. The fitting does not meter lubricant; it only provides the inlet connection to the divider. See the SSV progressive distributor page for the assembly context. Matching this fitting to the correct divider port form remains the primary installation requirement.
The 6 mm Versus 1/4 in Warning
A 6 mm tube is not the same as a one quarter inch tube. They are close in size but not interchangeable. Forcing one tube into a fitting sized for the other damages the seal or collet. Always match the tube outside diameter exactly to the fitting body marking before assembly.
R 1/8 Versus G 1/8 Threads
R 1/8 is a tapered BSPT-form port. G 1/8 is a parallel BSPP-form port. The two thread forms look similar but seal differently. Match the port form to the manifold tapping before installing this fitting.
Ordering Cautions
The 223 series contains other sizes, for example M6, M8, and M10 stud versions and the 10 mm x one quarter inch NPT straight fitting covered on the linked 10 mm straight fitting page. Do not assume cross-size interchange; order by full part number. For a quotation on this 6 mm fitting, contact the quotation team.
Frequently Asked Questions
What is the exact port thread on the 223-12270-7?
The fitting has an R 1/8 port, which is a tapered BSPT form. This port must match a manifold tapping with the same tapered thread.
Does this fitting meter lubricant?
No, this fitting carries no metering function. It only joins tubing to a divider port in a lubrication system.
Can I use a one quarter inch tube with this 6 mm fitting?
Forcing a one quarter inch tube into a 6 mm fitting damages the seal or collet. They are close in size but not interchangeable in this connection.
What is the equivalent SKF designation?
SKF lists the equivalent designation GE 6 LLR 1/8 K for this form. Use this cross-reference only for identification, not as an endorsement.
Is the material grade published?
The body material is steel, but the grade and plating are not published. Confirm the exact finish on your quotation before ordering.
Can I rely on the “up to 100 bar” pressure claim?
One reseller lists a claim of up to 100 bar for this style. Treat that figure as an insufficient single-listing claim without full SKF supporting documentation.
Which divider assemblies use this inlet fitting?
SKF fitting-kit documentation lists this style for SSV, SSV-E, SSVM, SSVD, and SSVD-E progressive divider assemblies. The fitting serves only as an inlet connection, not as a metering element.
How is R 1/8 different from G 1/8?
R 1/8 is tapered BSPT form and seals on the thread taper. G 1/8 is parallel BSPP form and seals with a bonded washer or O-ring.
Are all 223 series fittings interchangeable?
No, the 223 series contains other sizes including M6, M8, and M10 stud versions. Always order by the full part number to avoid cross-size errors.
Who builds and supports these fittings?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
For a direct quotation on this replacement fitting, contact the quotation team. Lincoln and SKF are trademarks of their respective owners. This page covers aftermarket fitting alternatives, not manufactured, sponsored, or endorsed by Lincoln. 223-12270-7 and GE 6 LLR 1/8 K are Lincoln or SKF designations shown for cross-reference identification only.
