What the DDRB-N Does
The DDRB-N is a modular multi-point electric grease pump built for centralized lubrication. A single pump unit feeds 1 to 14 lubrication points, and systems expand to as many as 50 points by adding pump sections rather than by replacing the pump.
Every stroke of the pump feeds all connected points at the same moment, so dosing is set by the discharge selection rather than by line balancing. Operating pressure runs 200-315 bar, which places the unit in the high-pressure class for grease distribution.
In a complete machine layout the DDRB-N takes the pump slot of a single-line architecture, with metering hardware downstream. The single-line lubrication system overview shows how pump, lines, and dividers are arranged.
Declared Specifications
These values are declared on the product page; anything not listed here should be confirmed when ordering.
| Parameter | Declared value |
|---|---|
| Lubrication points | 1-14 per pump unit, expandable to 50 |
| Discharge per stroke | 1.8 / 3.5 / 5.8 / 10.5 mL, configurable |
| Feeding rate | 22 cycles per minute |
| Operating pressure | 200-315 bar (31.5 MPa max) |
| Temperature range | -20 to +80 °C |
| Motor | 0.18 kW / 0.37 kW |
| Reservoir | 10 L / 30 L |
| Weight | 43-55 kg |
| Lubricant | Grease NLGI 0 to 2, or oil |
| Grease penetration | 265 at 25 °C with a 150 g cone |
| Voltage | 220 / 380 / 415 V, 50/60 Hz |
The grease window is NLGI 0 to 2, or oil as an alternative. Where grease is used, the declared requirement is a penetration of 265 at 25 °C with a 150 g cone.
How Modular Outlets Work
Outlets scale by adding pump sections, not by fitting a larger motor. Each added section brings its own pistons and outlets, and one controller runs the combined bank.
Because each outlet is served by its own piston on the same stroke, dosing stays uniform across the points. Where a machine section needs more points than one outlet can cover, progressive distributors can divide a single outlet further.
Family Choices
Within the site’s pump family, each model holds a different slot, so the choice starts from the point count and the flow each point needs. The SDRB-N heavy-duty electric grease pump is the dual-outlet member: one pump body, two outlets, for heavy-duty points.
The DRB-P electric grease pump is a single-outlet pump station when the job is one point, or one small group fed through a divider. The DDB multi-point grease pump covers multi-outlet duty with fixed outlet counts.
The ZPU 08/14/24 grease pump is another multi-point option in the range, sized by its own outlet steps. Choose the DDRB-N when the point count may grow later, since modular sections take a system to 50 points without replacing the pump.
Installation and Electrical
Weight runs 43-55 kg depending on configuration, so mount the unit on a surface that carries the load and leaves room to refill the reservoir. Supply options are 220 / 380 / 415 V at 50/60 Hz, with motor choices of 0.18 kW or 0.37 kW.
Timer and controller options were mentioned on the earlier page without full detail. Treat controller options as confirm when ordering, and raise any open points through the quotation contact page before purchase.
Oils, Greases and Cold Weather
The declared lubricant window is grease NLGI 0 to 2 or oil. A higher NLGI number means a stiffer grease, and NLGI 0 is the softest grade in this pump’s range.
In cold rooms near the -20 °C lower bound, shift toward the softer end of the window, because grease stiffens as it cools. Fill with clean grease and keep the fill port closed between refills.
Frequently Asked Questions
How do the outlets scale on a DDRB-N system?
You add pump sections rather than fitting a bigger motor. One module feeds 1 to 14 points, and expansion takes the total to 50 points.
How do I size the per-point dose?
Every stroke feeds all connected points at once, so the total output is shared across the point count. Divide the combined output by the number of points when sizing each line.
What does the NLGI 0 to 2 window mean?
NLGI 0 is the softest grade in the range and NLGI 2 is the stiffest. Softer grease pumps with less resistance, which matters most in cold conditions.
Can the pump run oil instead of grease?
Yes, the declared lubricant window includes oil as an alternative to grease. Confirm the seals and reservoir configuration for oil service when ordering.
Should I choose the 10 L or 30 L reservoir?
The 10 L reservoir suits compact systems with easy refill access. Choose the 30 L reservoir where longer intervals between refills matter.
What happens in a cold room near the lower limit?
The declared temperature range runs from -20 to +80 °C. Toward -20 °C, specify a softer NLGI grade because grease stiffens as it cools.
Are timer or controller options available?
The earlier page mentioned timer and controller options without detailing them. Treat controller options as confirm when ordering.
What discharge per stroke settings exist?
Discharge per stroke is configurable at 1.8, 3.5, 5.8, or 10.5 mL. The setting is chosen during configuration to match the dose each point needs.
Which motor and voltage should I specify?
Motor choices are 0.18 kW or 0.37 kW, and supply options are 220 / 380 / 415 V at 50/60 Hz. Match both to the facility supply and the duty of the system.
Who builds and supports this pump?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
To size a DDRB-N system, send the point count and machine layout through the quotation contact page.
