Identity and Cross-Reference
This page serves as an aftermarket cross-reference for the Vogel SKF injection oiler designation 501-303-028. The number is listed in the official catalog for injection oiler, 1-port and 3-port type. It identifies a 3-port injector for group-control oil systems built around group actuation.
The same catalog family has two main versions, the 1-port type and the 3-port type. This page focuses on the 3-port configuration without reservoir, without proximity switch, and without side connection. Confirm current stock details at quotation.
Verified Catalog Data
- Family version: 3-port type, group control (group actuation)
- Metering quantity: 0.003 to 0.03 cm3 per stroke
- Tube diameter: 4 mm
- Seal: FPM (fluororubber); NBR sealing is also available across the family
- Actuating pressure: approximately 3 to 10 bar
- Configuration ships without reservoir, without proximity switch, and without side connection
- Versions in the family: 1-port type and 3-port type
These values come from the Vogel SKF catalog page for injection oiler, 1-port and 3-port type. Verify remaining details at quotation because aftermarket cross-reference stock may vary.
What an Injection Oiler Does
A group-control injection oiler meters lubricant into a point under pneumatic actuation. The metering quantity ranges from 0.003 to 0.03 cm3 per stroke, which suits minimum quantity lubrication. This unit depends on a correctly sized central pump and clean supply oil for consistent output.
Injection oilers like this one serve group-control oil systems where several points receive lubricant at timed intervals. Without a central pump, the injector cannot generate oil flow on its own. Learn more about how central lubrication works at what is a central lubrication system.
Family Configuration Options
The Vogel SKF injection oiler family includes the 1-port type and the 3-port type. This 501-303-028 is the 3-port group actuation version with FPM sealing. NBR sealed variants exist for compatibility with different oil chemistries. Actuation remains pneumatic across both versions.
Options elsewhere in the family include a reservoir, a proximity switch, and a side connection. This exact configuration ships without those three options. See single line lubrication system guidance for system context.
Where It Fits in Lubrication Circuits
This 3-port injection oiler fits group-control oil systems for minimum quantity lubrication and tool lubrication. It is not a complete lubrication package; it needs a central pump and clean supply oil. Actuation is pneumatic, so a compressed air signal controls the metering event.
Typical installations include machining tools where lubricant must reach several points in small, controlled volumes. The 3-port design supports three metering outlets in one compact body. Review related injector options at ZEM injectors.
Ordering and Cross-Reference Notes
This is an aftermarket identification page for 501-303-028. This site supplies this injection oiler as a cross-reference part. Please confirm seal material, port count, and absence of options at quotation.
Since stock configurations vary, the quotation team can verify metering quantity, tube diameter, and actuating pressure before shipment. For a price or delivery schedule, contact the quotation team.
Frequently Asked Questions
What is the metering quantity of 501-303-028?
The metering quantity is 0.003 to 0.03 cm3 per stroke. This range matches the official Vogel SKF catalog for the injection oiler family.
How many ports does this injection oiler have?
This version has 3 ports for group actuation. It is the 3-port type described in the catalog.
What seal material is used on 501-303-028?
The seal is FPM fluororubber for this configuration. The same family also offers NBR sealing as an alternative.
What actuating pressure does this oiler require?
The actuating pressure is approximately 3 to 10 bar. Pneumatic actuation drives the metering action within that range.
Does 501-303-028 include a reservoir or a proximity switch?
This configuration ships without a reservoir and without a proximity switch. Those options are available elsewhere in the injection oiler family.
What is the tube diameter for this injector?
The tube diameter is 4 mm for this injection oiler. Verify connection details at quotation to match your existing lines.
What are typical applications for this unit?
Typical applications include minimum quantity lubrication and tool lubrication. Group-control oil systems use this injector for controlled lubricant delivery.
Does this unit need a central pump and clean oil?
Yes, this unit depends on a correctly sized central pump and clean supply oil. Contaminated oil can affect metering accuracy and seal life.
Is this an original SKF part?
No, this is an aftermarket injection oiler identified by the Vogel SKF number 501-303-028. It is not manufactured or endorsed by SKF.
Who builds and supports this unit?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
For ordering assistance, contact the quotation team. SKF and Vogel are trademarks of their respective owners. This is an aftermarket injection oiler, not manufactured, sponsored, or endorsed by SKF. 501-303-028 is a Vogel SKF designation shown for cross-reference identification only.
