Electric Motor Grease Pump — 20703 Multi-Outlet Lubricator
The 20703 electric motor grease pump is a compact motor-driven multi-line lubricator for mobile machinery, wind turbines, wheel loaders, excavators, and general industrial cabinets. A 50 W DC or AC motor drives 1 to 3 pump elements, each outlet delivering about 5.5 ml/min at up to 25 MPa working pressure (safety valve typically set at 25 MPa; elements bench-tested to higher proof pressure).
Power: DC 12 V / 24 V for on-board equipment; AC 220 V / 380 V for fixed panels. Reservoir: 2, 4, 6, 8, 10, or 12 L plastic tanks (2–12 kg class). Grease: NLGI #000 – #2 (some oil elements available on request—confirm before filling). Protection: IP65 assembled; enhanced sealed timer covers for harsh dust/washdown.
Optional Timer-1 / Timer-2 PCB sets lubricate and pause windows (seconds to hours). Low-level control and follower plates available. Works with Quicklub and modular lube layouts. Sibling page: automatic grease pump (20703). Hub: grease pump · auto greaser systems.
- Parameter
- Our Package
20703 Motor Pump Specifications
| Parameter | Value |
|---|---|
| Supply voltage | DC 12 V / 24 V; AC 220 V / 380 V |
| Motor power | 50 W |
| Loaded current | ~3 A (typical) |
| Max working pressure | 25 MPa |
| Discharge per element | ~5.5 ml/min |
| Outlets / elements | 1–3 |
| Reservoir | 2 / 4 / 6 / 8 / 10 / 12 L plastic |
| Grease | NLGI #000 – #2 |
| Protection | IP65 (IP66 class sealing on timer option) |
| Timer options | Timer-1, Timer-2, or external controller |
| Lubricate interval range | ~2 minutes to 15 hours (PCB setting) |
| Run time range | ~4 seconds to 37.5 minutes per cycle |
Detailed Timer A/B DIP tables: keep existing tab tables on page if already embedded—or paste from original tab for technicians who set DIP switches.
Our Package
Standard export packaging with reservoir, elements, fittings, and installation sheet. Request pump ID code chart from sales for voltage + tank + element (K6/K7/K8) combination.
Adjustable Reservoir (1–12 kg class)
Reservoir options from 1 kg to 12 kg (2–12 L) in plastic or aluminum. Custom tank height for OEM envelopes. Follower plate recommended on mobile machines.
K6, K7, K8 Pump Elements
Interchangeable elements with adjustable output; factory tested at high proof pressure. Safety relief at 25 MPa working class. Optional extended pressure gauge for commissioning.
High Protection Enclosure
Harsh-environment builds use sealed timer covers and glued gaskets for dust and splash—targeting IP65/IP66 class performance when fully assembled.
50 W Electric Motor
High-quality 50 W motor options in DC 12 V and DC 24 V (AC variants per order code). Low current draw suitable for battery-powered vocational equipment.
Related Product
Why a Motor-Driven Grease Pump?
Electric motor pumps eliminate manual lever fatigue and missed PM intervals. The 20703 family runs short pressure cycles on a timer—building enough pressure to stroke M2500 / 3000 / 2000 metering units, progressive manifolds, injectors, or direct lines to fittings on excavators, loaders, wind turbines, and industrial machines.
Electric Motor & Power Draw
The standard 50 W motor is sized for intermittent duty—short run segments separated by long pause intervals. Typical loaded current is about 3 A on DC installs. Select 12 V when tied to engine-battery systems that idle at lower bus voltage; use 24 V on vocational trucks and wind nacelle panels. AC 220 V / 380 V builds suit factory skids and fixed cabinets with mains power.
K6, K7, K8 Pump Elements
Modular adjustable-output elements (K6, K7, K8) set grease flow per outlet. Larger element codes pass more volume per minute—size from farthest point demand, line length, and NLGI grade. Elements are proof-tested on IsoHiTech benches; safety relief is set for 25 MPa working class on standard skids.
Timer-1 / Timer-2 Cycle Control
Onboard PCB timers split each cycle into run time (pump energized) and pause time (pump off). DIP switches map seconds/minutes for run and minutes/hours for pause—see Tab tables for exact positions. For PLC integration, specify external lubrication controller and dry-contact outputs instead of built-in timer.
Reservoir Material & Height Options
Choose plastic or aluminum tanks from 2 L to 12 L; custom reservoir height available for tight cabinets. Follower plate and low-level switch prevent air ingestion when grease level drops on slopes or in mobile tilt conditions.
Typical System BOM
- 20703 pump with 1–3 elements and ordered tank volume
- Timer or PLC with lubricate/pause and optional low-level input
- Metering — progressive block, M2500-class unit, or SL32 injectors
- Distribution — tubing, hose ends, filter, spring cover on exposed runs
20703 vs FS vs SK-505 vs automatic-grease-pump
| Pump | Voltage | Tank | Pressure | Use |
|---|---|---|---|---|
| 20703 motor (this page) | 12/24 VDC, 220/380 VAC | 2–12 L | 25 MPa | Motor + timer; multi-outlet mobile/industrial |
| 20703 automatic | AC / DC | 2–12 L | 25 MPa | Quicklub / modular cabinet focus |
| FS series | 12/24 VDC | 4–10 L | 25 MPa | Progressive on construction OEM |
| SK-505 | 12/24 VDC | 1 L | 8 MPa | Single compact outlet |
Installation & Timer Setup
- Mount pump level or slightly below reservoir pick-up; ground DC negative; fuse per nameplate.
- Program Timer-1/2 DIP or external controller—start with OEM lubricate/pause values.
- Plumb Rc 1/4 or 1/8 outlets to metering devices; bleed air at highest point.
- Run until fresh grease at every fitting; enable low-level alarm to stop dry running.
- Record pump ID code (voltage + tank + K6/K7/K8) on machine lubrication plate.
Maintenance Schedule
- Weekly visual — tank level, leaks at Rc fittings, timer LED/fault codes.
- Monthly — spot-check farthest bearing for fresh grease; listen for cavitation.
- Annual — inspect element wear, timer cover seal, follower plate condition; replace Viton seals if hardened.
Troubleshooting
| Issue | Cause | Fix |
|---|---|---|
| Motor runs, no pressure | Empty tank, air lock, wrong NLGI | Refill; bleed; verify grease grade |
| One outlet weak | Blocked element or line | Replace element; clear progressive section |
| Timer does not pause | DIP mis-set, PCB fault | Reset timer chart; replace controller |
| Battery drain on 12 V | Pause too short, relay stuck on | Lengthen pause; test motor relay |
| Covers ingest dust | Seal damaged | Service IP66 timer cover gasket |
Quote: contact IsoHiTech · pressure test · shipping.
Before you buy: read our complete guide to grease pumps.
DC 12 V, DC 24 V, AC 220 V, and AC 380 V. Motor, timer PCB, and harness must match the ordered voltage class.
25 MPa maximum working pressure on standard builds (safety valve at 25 MPa). Size downstream hose and fittings to the same class.
Grease NLGI #000 through #2 standard. Oil-only elements (#40–1000) are special order—do not fill oil in grease elements without confirmation.
2, 4, 6, 8, 10, and 12 L plastic tanks (often listed as 2–12 kg). Aluminum reservoirs available for selected models.
IP65 typical on assembled pump; enhanced sealing on timer housing for IP66-class dust protection in harsh fields.
Wind turbines, earth-moving equipment, wheel loaders, excavators, and general industrial machines needing automatic multi-line grease.
Both cover the 20703 pump family. This page emphasizes motor + timer integration; see also automatic grease pump for parallel Quicklub/modular content.