The 4L automatic oil lubrication pump is the long-interval member of the automatic oil pump family from IsoHiTech Lubrication Systems. Its 4 liter reservoir stretches the time between refills for unattended or multi-shift production, larger point counts, and machines with several distribution branches, in exchange for a bigger physical envelope and a heavier filled unit.
Key specifications
| Specification | Value |
|---|---|
| Reservoir capacity | 4 L |
| Oil viscosity range | 40-1500 cSt |
| Max pressure | 40 bar (4 MPa) |
| Output rate | up to 210 ml/min |
| Outlets | single outlet on the base unit; series configuration confirmed at order |
| Voltage options | 24V DC, 110V AC, 220V AC |
| Operating temperature | -25°C to +70°C |
| Protection class | IP65 |
| Metering | 0.7-4.0 ml/min per outlet |
| Dimensions | 211 x 224 x 287 mm |
| Control and features | built-in timer with adjustable interval and run time; low-level alarm; manual override |
Why a 4 L reservoir
Reservoir size is a refill-interval decision. Where an operator walks past the machine every shift, a smaller tank is fine; where production runs unattended or across multiple shifts, every refill avoided is a stoppage avoided. The 4L model exists for that second case. Pure arithmetic shows the headroom: at the maximum output of 210 ml/min, a full 4 L reservoir equals about 19 minutes of total pumping. Actual duty runs seconds per cycle, so real refill intervals stretch far longer and depend entirely on the timer settings and point count. If your machine is a compact single-station unit, the 1 kg automatic oil lubrication pump or the 3L oil lubrication pump may fit better.
Control and features
The built-in timer offers adjustable interval and run time, so cycle spacing and dose length can be matched to the machine. A low-level alarm flags the reservoir before it runs dry, and a manual override triggers an immediate lubrication cycle after maintenance or a long stoppage. Cycles are timed and intermittent; the pump does not run continuously.
Outlets and distribution
The base unit has a single outlet that feeds one lubrication circuit. Supplying multiple points from that circuit requires distribution components such as metering units and lines, specified separately for your machine; the lubrication tubing and hose selection guide explains line sizing. Outlet configuration for the wider series is confirmed at order.
What this page does not claim
- The timer is an open-loop schedule. It does not sense whether the machine is running, and a running pump motor does not prove that oil arrived at every point.
- No outlet count beyond the single-outlet base unit is stated on this page; outlet configuration for the series is confirmed at order.
- No fixed refill schedule is promised. The arithmetic above is a ceiling, not a plan; intervals depend on your timer settings and point count.
FAQ
What is a 4L automatic oil lubrication pump?
It is an automatic oiler with a 4 liter reservoir that delivers timed, intermittent oil cycles to machine lubrication points. It is built for long refill intervals, unattended or multi-shift running, and larger distribution layouts.
Who needs 4L instead of 3L or 1 kg?
Choose 4L when refills are costly in time or access: unattended lines, multi-shift production, or many points. The 3L model is the standard middle option, and the 1 kg model suits compact single machines with easy operator access.
How many outlets does it have?
The base unit has a single outlet feeding one circuit. Multi-point supply needs distribution components specified for your machine, and outlet configuration for the series is confirmed at order.
What oil viscosity does it handle?
The published range is 40-1500 cSt. Use the grade your machine builder specifies within that range.
How does the timer work?
You set an interval (pause between cycles) and a run time (dose length per cycle), and the pump repeats that schedule. It is an open-loop schedule, so combine it with routine level and point checks; the low-level alarm covers the reservoir side.
How often does the reservoir need refilling?
At the maximum output of 210 ml/min, a full 4 L reservoir equals about 19 minutes of total pumping. Real cycles run seconds at a time, so the actual interval stretches far longer and depends on your timer settings and point count; no fixed schedule applies.
What voltage options are available?
24V DC, 110V AC, and 220V AC. Confirm the supply available at your machine before ordering.
Does it have a low-level alarm and manual override?
Yes. The low-level alarm flags the reservoir before it runs dry, and the manual override triggers an immediate cycle, useful after maintenance or a long stoppage.
What should I specify when ordering?
Provide your voltage, oil grade within 40-1500 cSt, point count or distribution layout, and desired cycle settings. Send these through the quote form so the outlet configuration can be confirmed.
Planning a long-interval installation? Contact us for a quote with your machine layout and point count.
