FS Series Grease Pump — Mobile Progressive Lubrication
The FS series grease pump is an electrically driven progressive lubrication pump for construction, mining, forestry, and on-road mobile equipment. A gear motor drives up to three piston elements that deliver grease to a progressive divider valve (M2500 / 3000 / 2000 class metering units on this page) in series—each outlet receives a fixed dose per full divider cycle.
Reservoir: 4 L, 6 L, 8 L, or 10 L integral tank. Discharge: approximately 2.5 / 3.5 / 5 ml/min depending on element count and configuration. Working pressure: up to 25 MPa. Grease: NLGI #000 through #2. Power: DC 12 V (common on battery equipment), DC 24 V, or AC 220 V per order code.
Integrated programmable controller manages lubricate/pause cycles. Optional low-level switch (M12 quick-plug, 4 poles) signals empty tank to PLC or dashboard lamp. Enclosure rated for dusty, wet, high-vibration service—pair with progressive metering units, lubrication tubing, and inline grease filter on long lines.
Hub: grease pump · auto greaser systems · heavy equipment lubrication.
| Parameter | FS series typical |
|---|---|
| Voltage | DC 12 V / DC 24 V / AC 220 V |
| Reservoir | 4 / 6 / 8 / 10 L |
| Discharge | 2.5–5 ml/min |
| Max pressure | 25 MPa |
| Grease | NLGI #000 – #2 |
| Piston elements | Up to 3 |
| Level switch | Optional |
- In General
Progressive System Operation
FS pumps feed series progressive divider valves. When the pump runs, grease moves pistons inside the divider sequentially—each section must complete before the next advances. One full indicator cycle confirms every connected bearing received its metered volume. The onboard controller can run in time-based or cycle-complete modes and trigger fault output if the divider fails to index within the alarm window.
Mobile Machinery Applications
Designed for off-road and on-road mobile plant: wheel loaders, excavators, articulated haul trucks, motor graders, and similar machines where centralized greasing reduces PM time and missed points. DC 12 V suits equipment with engine-start battery supply; DC 24 V suits larger vocational fleets. Large reservoir options (8–10 L) extend service interval between refills in remote sites.
Key Advantages
- Large tank options with optional low-level monitoring
- Built-in timer/controller—interfaces with refill pumps and progressive blocks
- High protection class enclosure for construction, mining, and forestry environments
- Up to three pumping elements for higher flow to large divider manifolds
Related Product
FS vs SK-505 vs Cabinet Pumps
| Pump | Power | Tank | Pressure | Best for |
|---|---|---|---|---|
| FS series | 12/24 VDC, 220 VAC | 4–10 L | 25 MPa | Mobile progressive on excavators, loaders |
| SK-505 | 12/24 VDC | 1 L | 8 MPa | Compact single-outlet automatic |
| 20703 / CS | 220/380 VAC | 2–12 L | ~25 MPa | Fixed machine cabinet |
Electrical Connections
| Function | Connector | Notes |
|---|---|---|
| Motor / power | DIN 43650, 3 poles | Match ordered voltage (12 V, 24 V, or 220 V) |
| Low-level switch | M12 quick-plug, 4 poles | Optional; wire to controller or PLC alarm input |
IsoHiTech can supply level signals in 0–5 V or 4–20 mA on custom builds—state requirement on PO.
Progressive Divider Pairing
Mount an FS outlet to a progressive manifold such as M2500, 3000, or 2000 metering units (Related Products grid). Size total divider output (ml/cycle × points) against pump flow and lubricate interval. Install a cycle indicator pin or pressure switch on the end section for controller feedback.
Installation & Commissioning
- Mount pump on vibration-isolated bracket; route power per DIN 43650 pinout.
- Fill tank with clean NLGI-rated grease; enable low-level circuit if equipped.
- Plumb outlet to divider inlet through optional 150 µm grease filter.
- Bleed air at divider high point; run until grease exits every remote fitting.
- Program controller lubricate/pause; verify full divider cycle each run.
Troubleshooting
| Symptom | Likely cause | Action |
|---|---|---|
| Controller fault, no cycle | Blocked divider section, line freeze | Isolate sections; replace blocked metering unit |
| Low-level alarm constant | Empty tank, faulty float | Refill; test M12 switch continuity |
| Weak pressure | Soft grease cold, worn elements | Use NLGI within spec; service pump head |
| Some points dry | Progressive section failed mid-chain | Watch indicator pin; replace stuck piston block |
Quote full skid: contact IsoHiTech · factory test · shipping.
Before you buy: read our complete guide to grease pumps.
DC 12 V for battery-powered construction equipment, DC 24 V for vocational fleets, and AC 220 V for shop or stationary skids. Specify on order—motor and controller are matched to voltage.
Integral tanks in 4 L, 6 L, 8 L, and 10 L. Larger tanks suit machines with many progressive outlets or long refill intervals.
Up to 25 MPa. Size hose, fittings, and divider blocks to the same pressure class.
NLGI #000 through #2. Stiff greases in cold climates may need shorter lines or heated enclosure—confirm with engineering.
Motor supply via DIN 43650 3-pole connector. Follow pin diagram on pump label for 12 V, 24 V, or 220 V wiring.
Optional sensor uses M12 4-pole quick-plug. Reference wiring diagram on product or request from sales (see level switch image on file server).
State voltage, reservoir size, element count, and whether low-level alarm is required. IsoHiTech can provide analog level output (0–5 V or 4–20 mA) on request.