Product Overview
The DC24V-B is a compact electric piston pump from IsoHiTech Lubrication Systems for automated progressive centralized lubrication on mobile and stationary equipment. A 50W DC motor drives each element through an eccentric cam, keeping delivery reliable with hard greases and at low temperatures. The 1-3 independent outlets each feed a progressive distributor circuit.
Key Features
- Direct eccentric-cam drive: non-modulated elements stay reliable with hard greases and cold starts.
- Electronic cycle control: adjustable run time and pause interval; PLC control on timer-free versions.
- Voltage flexibility: 24V DC standard, 12V DC optional; 2 L transparent reservoir with optional low-level switch.
- IP65 protection, power-off memory, and FEED/RST manual controls.
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Voltage | 24V DC (12V DC optional) |
| Motor Power | 50W |
| Max. Pressure | 25 MPa (250 bar) |
| Single Outlet Discharge | 5.5 ml/min |
| Number of Outlets | 1-3 |
| Reservoir | 2 L transparent plastic (optional low-level switch) |
| Grease Range | NLGI 000-2 |
| Protection | IP65 |
| Interval Time | 4 minutes to 15 hours (adjustable) |
| Running Time | 8 seconds to 37.5 minutes (adjustable) |
| Current (when loaded) | 3A |
| Operating Temperature | -30 °C to +80 °C |
| Outlet Thread | M12x1.5 or Rp1/4 (optional) |
Models & Ordering
Pick the model code by outlet count, voltage, and timer option; if unsure, request a quote and we will confirm the fit.
| Part Number | Model Code | Outlets | Voltage | Timer | Application |
|---|---|---|---|---|---|
| 207021120 | P20702-1N-12V-0T | 1 | 12V DC | None | Basic single outlet, PLC controlled |
| 207022121 | P20702-2N-12V-1T | 2 | 12V DC | Timer-1 | Dual outlet with basic timer |
| 207022241 | P20702-2N-24V-1T | 2 | 24V DC | Timer-1 | Dual outlet, 24V with timer |
| 207023242 | P20702-3N-24V-2T | 3 | 24V DC | Timer-2 | Triple outlet, advanced timer |
Code legend: P20702 = base series; 1N/2N/3N = outlet count; 12V/24V = voltage; 0T = no timer (external PLC); 1T = basic interval; 2T = advanced interval with alarm.
Voltage Options
12V DC suits small vehicles and battery-powered equipment; 24V DC is standard on heavy trucks, construction machinery, and industrial DC systems. See the electric grease pump voltage selection guide.
Pump Elements
Each outlet has an independent eccentric-cam piston element. Standard elements deliver 5.5 ml/min per outlet; an adjustable option covers 0.04-0.12 ml/stroke. Up to three elements fit one pump body, each with an integrated 25 MPa relief valve. Grease passes to the progressive distributor block, which sequences shots to each bearing.
Lubricant Compatibility
Lubricant limits:
- Grease: NLGI 000-2; avoid lubricants with over 5% graphite or MoS2 solids.
- Oil: mineral oils from 40 mm2/s; synthetic oils must suit NBR seals.
- Cold conditions: below -10 °C ambient, use a low-temperature grease.
How It Works
Each cycle has four phases:
- Suction: the eccentric cam retracts the piston, drawing grease through the inlet check valve.
- Pressure: the advancing piston pressurizes the grease and opens the outlet check valve.
- Distribution: grease travels to the progressive distributor, which meters shots to the points.
- Relief: at stop, the relief valve vents residual pressure so the distributor resets.
A stirring paddle keeps grease moving toward the elements and limits separation.
Installation & Safety
Mounting:
- Keep the reservoir vertical for consistent feed.
- Orient the connector downward or sideways to keep water out.
- Use tubing of at least 6 mm outside diameter rated for 25 MPa.
Safety warnings:
- Never run the pump with an empty reservoir – dry running damages piston seals and motor.
- Use only NLGI 000-2 grease; NLGI 3 and stiffer grades cause pump failure.
- Refill only through the designated port (DIN 71412 grease nipple or quick coupling).
- Check motor rotation against the direction arrow on the housing.
Angled or inverted mounting traps air and causes cavitation; keep the reservoir upright.
Applications
Typical installations include construction machinery, mining equipment, agricultural machinery, commercial vehicles, wind turbines, and automated packaging lines.
Frequently Asked Questions
What is the DC24V-B electric grease pump?
The DC24V-B is a compact 12V/24V DC piston pump that automatically meters grease to progressive lubrication circuits on mobile and stationary equipment.
Can the DC24V-B replace another brand’s compact 24V piston pump?
Pumps of this class share piston-pump architecture and feed progressive circuits, so the DC24V-B is often evaluated for such retrofits. Other pump brands are referenced only as application context; IsoHiTech Lubrication Systems is not affiliated with any third-party pump manufacturer. Cross-referencing does not guarantee drop-in interchangeability – confirm voltage, outlets, timer, and divider layout before ordering.
How many lubrication points can one DC24V-B serve?
Each of the 1-3 outlets can feed a progressive distributor block that meters grease to several points in sequence; the total depends on your divider layout – confirm at order.
How do I choose between 0T, 1T, and 2T timer options?
Choose 0T when an external PLC handles timing, Timer-1 for basic intervals, and Timer-2 for advanced intervals with alarm output.
Which grease and oil grades are compatible?
Use grease up to NLGI 2; avoid lubricants with over 5% graphite or MoS2 solids. Mineral oils from 40 mm2/s work; synthetic oils must suit NBR seals. Below -10 °C, use low-temperature grease.
What happens if the reservoir runs empty?
Never run it dry: dry running overheats the motor and damages piston seals. Models with the low-level switch option alarm or stop; otherwise check the reservoir weekly.
How do I set the lubrication interval and run time?
On timer models, set T1 (run time, 8 seconds to 37.5 minutes) and T2 (pause, 4 minutes to 15 hours); power-off memory keeps settings through outages.
Can the pump be mounted at an angle or upside down?
No – the reservoir must stay vertical; angled or inverted mounting traps air and causes cavitation that starves the elements.
Which model code should I order?
Match the code to outlet count (1N-3N), voltage (12V/24V), and timer need (0T/1T/2T), then request a quote with your machine type and divider layout for confirmation.
Related Links
Related: the grease pump range overview, and what a central lubrication system is.
