DC24V-B Electric Grease Pump | 24V/12V Progressive Lubrication | 1-3 Outlets

Product Overview The DC24V-B is a compact, electrically driven piston pump designed for progressive centralized lubrication systems in mobile and stationary industrial equipment. It serves as a comparable replacement to the BEKA MAX EP-1 series lubrication pumps, offering reliable automated grease delivery to multiple lubrication points with minimal maintenance requirements. The pump features a non-modulated drive mechanism where pump elements are driven directly by a DC motor and eccentric cam, ensuring high operational reliability even at low temperatures or when using harder greases. Each outlet operates independently, allowing precise lubricant distribution to 1, 2, or 3 progressive distributor circuits. Key Features Non-Modulated Drive: Pump elements are driven non-modulated, ensuring high operational reliability even at low temperatures or when using hard greases. Electronic Control: Integrated timer allows precise distribution of lubricants with adjustable cycle and pause times. Lubricant Compatibility: Suitable for greases up to NLGI Grade 2 and fluid lubricants. Control Options: Available with or without integrated control units (Timer-1 / Timer-2). Reservoir Capacity: 2-liter transparent plastic reservoir with optional low-level monitoring. Voltage Flexibility: Available in 12V DC and 24V DC configurations. 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) 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 M12×1.5 or Rp1/4 (optional) Models & Ordering Information When ordering, specify the number of outlets, voltage, and timer configuration: < 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 Model Code Legend: P20702 = Base pump series 1N/2N/3N = Number of outlets (1 to 3) 12V / 24V = Operating voltage 0T = No timer (external PLC control) 1T = Timer-1 (basic interval control) 2T = Timer-2 (advanced interval alarm functions) Voltage Options All DC24V-B models are available in both 12V DC and 24V DC versions. Select the voltage that matches your equipment electrical system: 12V DC: Suitable for small vehicles, agricultural machinery, and battery-powered mobile equipment 24V DC: Standard for heavy trucks, construction machinery, and industrial DC systems Pump Elements Each outlet is driven by an independent pump element similar to the PE-120 type used in BEKA MAX EP-1 systems. The eccentric cam-driven piston provides positive displacement output with each rotation of the motor. Elements can be configured for: Fixed displacement: Standard 5.5 ml/min per outlet Adjustable displacement: Optional flow-adjustable element (0.04 – 0.12 cc/stroke range) Up to 3 pump elements can be installed in a single pump body. Each element includes an integrated pressure relief valve preset to 25 MPa for system protection. Lubricant Compatibility The DC24V-B is suitable for both grease and oil applications: Grease: NLGI Grade 000#, 00#, 0#, 1#, and 2#. Excludes solid lubricants (graphite, MoS₂) exceeding 5% concentration. Oil: Mineral oils from 40 mm²/s (cSt) viscosity. Synthetic oils compatible with NBR seals. Temperature: Select low-temperature grease for ambient conditions below –10°C to ensure pumpability. Additional Features Oil Level Control: Optional low-level switch available (specify at order). Provides dry-run protection and remote alarm capability. Adjustable Lubrication Cycle: Timer-equipped models allow independent setting of lubrication run time and pause interval. Power-Off Memory: Timer retains settings during power interruption. Pump resumes from stop time or restarts cycle upon power restoration. Manual Override: Press the “FEED” or “RST” button for immediate manual lubrication or alarm reset. How It Works The DC24V-B employs a positive displacement piston mechanism: < Suction Phase: The DC motor drives an eccentric cam, which retracts the pump piston, creating vacuum and drawing grease from the reservoir through the inlet check valve. Pressure Phase: As the cam rotates, the piston advances, pressurizing the grease and opening the outlet check valve. Distribution Phase: Grease is delivered through the outlet to the progressive distributor or directly to the lubrication point. Relief Phase: When the pump stops, the pressure relief valve vents residual pressure, allowing the progressive distributor to reset for the next cycle. The integrated stirring paddle (charging arm) prevents grease separation and ensures consistent flow toward the pump elements. Installation & Safety Mounting Requirements: Mount the pump with the reservoir in a vertical position for optimal grease feed. Ensure the electrical connector faces downward or sideways to prevent water ingress. Use high-pressure tubing (minimum 6 mm OD) rated for 25 MPa. Critical Safety Warnings: Never run the pump with an empty reservoir. Dry running will damage the piston seals and motor. Use only specified NLGI 000#–2# grease. NLGI 3# or higher consistency will cause pump failure. Fill grease through the designated filling port (DIN 71412 grease nipple or quick-connect coupling). Do not open the reservoir cover during operation. Verify motor rotation direction matches the arrow marking on the pump housing. Applications Construction machinery (excavators, loaders, cranes) Mining equipment (crushers, screens, conveyors) Agricultural machinery (tractors, harvesters) Commercial vehicles (trucks, buses, refuse collection) Wind turbines and renewable energy systems Industrial automation and packaging lines Advantages Reduced Maintenance Downtime: Automated lubrication eliminates manual greasing schedules. Consistent and Precise Lubrication: Each bearing receives the exact programmed grease quantity. Adaptability: Suitable for mobile, stationary, and rotating installations. BEKA MAX EP-1 Compatibility: Drop-in replacement with comparable performance and dimensions. Frequently Asked Questions What is the DC24V-B grease pump and what is it used for? The DC24V-B is a compact 24V/12V DC electric piston pump for progressive centralized lubrication systems. It automatically delivers metered grease to 1–3 lubrication points at intervals programmed by an integrated timer or external PLC. It is commonly used on construction machinery, mining equipment, commercial vehicles, and wind turbines as a cost-effective alternative to the BEKA MAX EP-1 series. What is the difference between the DC24V-B and the BEKA MAX EP-1? The DC24V-B is designed as a comparable replacement to the BEKA MAX EP-1. Both share similar piston pump architecture, PE-120 type pump elements, and progressive system compatibility. Key differences: the DC24V-B operates at 25 MPa (250 bar) maximum pressure versus the BEKA EP-1’s 350 bar (280 bar relief valve) rating, and draws 3A @ 24V versus the BEKA’s 1.1A. The DC24V-B offers a 2L plastic reservoir standard, while BEKA provides larger options up to 16 kg. For standard industrial and mobile applications, the DC24V-B provides equivalent lubrication performance at a lower cost. How many lubrication points can one DC24V-B pump serve? The pump supports 1 to 3 outlets per pump body. Each outlet can feed a progressive distributor block, which in turn can serve multiple bearings. For example, a single outlet connected to a 6-section progressive distributor can lubricate 6–12 bearing points. Therefore, one DC24V-B with 3 outlets can theoretically serve 18–36 lubrication points depending on distributor configuration. What types of grease are compatible with the DC24V-B? The pump handles NLGI Grade 000#, 00#, 0#, 1#, and 2# grease. It also works with mineral oils from 40 cSt viscosity. Do not use NLGI 3# or higher consistency greases, and avoid lubricants containing more than 5% solid additives such as graphite or molybdenum disulfide (MoS₂), as these will clog the piston chamber and damage the pump. How do I set the lubrication interval and run time? On timer-equipped models (1T or 2T), press and hold the “Setting” button for 3 seconds to enter programming mode. Use the “Move” and “Plus” buttons to set the working time (T1) — the duration the pump runs per cycle — and the stop time (T2) — the pause interval between cycles. T1 can be set from 8 seconds to 37.5 minutes; T2 from 4 minutes to 15 hours. The timer has power-off memory, retaining settings during power interruptions. Can I use the DC24V-B without a timer? Yes. Model codes ending in 0T (e.g., P20702-1N-12V-0T) have no internal timer and are designed for external PLC or controller operation. The pump runs whenever power is applied to the motor terminals, and the PLC manages on/off timing, cycle counting, and fault monitoring. This is ideal for integrated machine control systems. What happens if the grease reservoir runs empty? Running the pump dry will overheat the motor and damage the piston seals due to lack of lubrication and cooling. Models with an optional low-level switch will trigger an alarm or stop the pump when grease falls below the minimum level. If your model does not have a level switch, inspect the transparent reservoir weekly and refill before the grease level drops below 20%. What is the maximum pressure and how is the system protected? The pump generates up to 25 MPa (250 bar) working pressure. Each pump element includes an integrated pressure relief valve preset to 25 MPa to protect the pump, tubing, and distributors from overpressure damage. In a progressive system, if one bearing point is blocked, pressure will rise until the relief valve opens, venting grease back to the reservoir and signaling a fault condition. Can the DC24V-B be mounted at an angle or on rotating equipment? The pump should be mounted with the reservoir in a vertical position for optimal grease feed to the pump elements. If mounted at an angle or on rotating machinery (e.g., wind turbine nacelle), specify a model with a follower plate or stirring paddle to ensure consistent grease delivery. Avoid mounting the pump completely inverted, as this will cause air pockets and cavitation. What spare parts should I keep in stock? Recommended spare parts include: complete pump element assemblies (with relief valve), check valve kits, piston seal kits, pressure relief valve cartridges, and the 2L reservoir lid with seal. For timer-equipped models, keep a spare timer control board. Always use genuine replacement elements to maintain the 25 MPa pressure rating and 5.5 ml/min flow specification. Related: Grease Pump hub — types, selection guides, and troubleshooting.