DZGK 12V/24V DC Electric Grease Pump
The DZGK is a compact DC electric grease pump built for vehicle-mounted lubrication on trucks, buses, trailers, and agricultural and construction machines. It runs on the vehicle 12V or 24V DC electrical system and delivers timed, intermittent grease shots through one to three piston-driven outlets. The series is offered for 12V and 24V vehicle systems; the table below shows the declared 24VDC ratings, and 12V current draw and ratings are confirmed at quoting. IsoHiTech Lubrication Systems supplies the DZGK as its standard series for mobile lubrication. This page lists the declared specifications, the operating principle, and the ordering information.
Key Specifications
| Item | Declared specification |
|---|---|
| Power supply | 24VDC; a 12V version exists in the series, confirm ratings at order |
| Motor power | 50W |
| Maximum pressure | 25 MPa (250 bar) |
| Discharge per outlet | 5.5 ml/min |
| Outlets | 1 to 3, each with its own piston element |
| Reservoir | 2 L plastic, 4 L option (P.N.124) |
| Grease consistency | NLGI 000 to 2 |
| Protection rating | IP65 |
| Pause interval | 4 minutes to 15 hours |
| Run time | 8 seconds to 37.5 minutes |
| Current, loaded (24VDC) | approx 3A |
| Drive | Gear motor with eccentric cam driving spring-loaded piston elements |
| Outlet threads, optional | M12x1.5 and Rp1/4 |
| Venting | Solenoid vent valve releases line pressure when the motor stops |
The base model P.N.20703 is the DC24V unit, single outlet, 2 L reservoir; the order code adds the outlet count. Options: timer P.N.120, outlet number P.N.122, pressure gauge P.N.123, 4 L reservoir P.N.124.
How It Works and Selection Guidance
A gear motor drives an eccentric cam that drives spring-loaded piston elements, one per outlet, each displacing grease at 5.5 ml/min against a maximum pressure of 25 MPa (250 bar). The pause interval, 4 minutes to 15 hours, and the run time, 8 seconds to 37.5 minutes, are set by the control side: the timer option or an external controller or PLC input. When the motor stops, the solenoid vent valve releases line pressure; the circuit is not held pressurized at rest.
Each outlet can feed a progressive divider network metering fixed volumes to many points, or a direct line to a single point or a few points. The point count therefore depends on the divider network downstream, not on the pump outlets alone.
At 5.5 ml/min, a full 2 L reservoir represents roughly six hours of total motor run time; how long that lasts in service depends entirely on the interval and run-time settings.
For selection, match the voltage to the vehicle system, choose one to three outlets, add the optional M12x1.5 or Rp1/4 threads if needed, and pick the 2 L or 4 L reservoir. Tubing, divider valves, and any external controller are specified separately. Send your requirements through the quote contact page; the 12V ratings and the full configuration are confirmed at quoting.
What This Page Does Not Claim
- The DZGK is an intermittent-duty pump on a timer cycle, not a continuous-duty pump, and this page does not describe it as one.
- No service-life, reliability, or uptime figures are published for this series, and this page quotes none.
- The 12V version exists in the series, but its current draw and ratings are confirmed at quoting rather than listed here.
- Tubing, divider valves, and the controller are specified separately, and the price list is not on this page; request a quote through the contact page for a quote.
Frequently Asked Questions
What is a DZGK 12V/24V DC grease pump?
It is a compact DC electric grease pump for vehicle-mounted lubrication on trucks, buses, trailers, and agricultural and construction machines. It runs on the vehicle 12V or 24V DC electrical system and feeds one to three outlets from a 2 L reservoir.
Should I choose the 12V or the 24V version?
Match the pump to the vehicle electrical system. The table shows the declared 24VDC ratings; 12V current draw and ratings are confirmed at order.
Can the DZGK run continuously?
No. It is an intermittent-duty pump: the timer or an external controller runs the motor for a set run time, then pauses for the set interval. Continuous duty is outside its design.
How many lubrication points can it serve?
The pump has one to three outlets, each with its own piston element. A direct line serves one point; a progressive divider block downstream meters fixed volumes to many points.
How often do I need to refill the 2 L reservoir?
At 5.5 ml/min, a full 2 L reservoir equals roughly six hours of total motor run time. The time between refills depends entirely on the interval and run-time settings, so no fixed schedule is stated here.
What happens when the power is switched off?
When the motor stops, the solenoid vent valve opens and releases line pressure. It does not hold pressure while idle.
How does it differ from a workshop or industrial electric grease pump?
A workshop or industrial piston pump is mains-powered and built for fixed installations, often with larger reservoirs. The DZGK is a compact vehicle DC pump with a 2 L reservoir and timed, intermittent duty for mobile machinery.
What control options does it offer?
Control is by the timer option (P.N.120), which sets the pause interval and the run time, or by an external controller or PLC input.
What should I specify when ordering?
Specify the voltage, outlet count, outlet thread if the M12x1.5 or Rp1/4 option is needed, and the reservoir size. The base model is P.N.20703, with options covered by the codes listed above.
