Multi-line pumps
Multi-Line Pumps for Central Lubrication Systems at Sinntec
Multi-line pumps deliver lubricant simultaneously through several fixed outlets directly from the pump to the lubrication points. That makes them ideal wherever machines must be supplied reliably, independent of distributor blocks and pressure fluctuations, for example under high loads, at low temperatures, or with varying cycle times. Our range includes electric and pneumatic models in different sizes, with variable numbers of outlets and selectable pump elements.
Prevent downtime and cut costs with Multi-Line Pumps
Picture a packaging line with multiple bearings and cam plates. Up to now, greasing was manual, irregular, and often too late. A multi-line pump takes over: each outlet serves a defined lubrication point with the right quantity per stroke. The result: a uniform film, less friction, less heat, and, above all, scheduled maintenance instead of expensive ad-hoc callouts.
How Multi-Line Pumps work
The principle is simple but clever: several pump elements operate in parallel inside one housing. Each element delivers a defined volume per stroke (e.g., 0.05–0.5 cm³) into its own line, directly to the lubrication point. There are no downstream progressive or metering distributors that “pass on” only once sufficient pressure is reached. This ensures:
- Independence per line: Every lubrication point gets its dose, even if another line is exposed to higher backpressure.
- High pressures & viscous lubricants: High system pressures are typical, making multi-line pumps particularly suitable for greases up to NLGI 2 and demanding environments.
- Exact dosing per stroke: The delivery volume is fixed by design or can be scaled via interchangeable pump elements.
Electric models run on time or pulses (e.g., via PLC), while pneumatic variants use existing compressed air, ideal when an air network is already in place.
Advantages at a glance
- Reliable supply to critical points: No “starvation” of individual lubrication points due to cascaded distributor chains.
- Plannable maintenance: Fixed stroke logic → reproducible quantities → verifiable lubrication.
- Robust in cold and dirty conditions: High pressures overcome stiff greases, long lines, and tight clearances.
- Modular & scalable: Number of outlets, element sizes, reservoir volume, and drive type are adapted to the application and medium.
- Easy integration: Electrical control via relay/PLC; pneumatic control via cycle valves.
These characteristics make multi-line pumps a dependable choice in harsh environments where failures are costly and quality must remain consistent.
Typical applications
- Mechanical engineering & machine tools: Spindle bearings, guides, cam plates, eccentrics.
- Construction and agricultural machinery: Pin bearings, joints, slewing units.
- Conveying technology: Roller bearings, chain drives, lifting systems.
- Energy, recycling, steel: Heavily loaded bearing points in continuous operation.
- Packaging & process industry: Indexed systems with tight maintenance windows.
Wherever simultaneous, defined lubricant quantities are needed at several, sometimes distant points, multi-line pumps play to their strengths.
Variants and key selection criteria
Drive types
- Electric (12/24 V, 230/400 V): For automated cycles, triggered by timer, controller, or machine timing.
- Pneumatic: When compressed air is available or when electric drives should be minimized in ATEX-sensitive zones.
Outlets / pump elements
- 2 to 20+ outlets are common. Element sizes determine the dose per stroke. For finer tuning, combine smaller/larger volumes or swap in adjustable variants.
Reservoir & medium
- Grease up to NLGI 2, optionally with agitator to prevent separation. For oil, transparent tanks and level sensors are practical.
Operating mode
- Intermittent: Lubrication cycles by time/stroke count; ideal for most bearings.
- Continuously cycled: For very high loads or when the film must not break.
Environmental conditions
- Consider temperature range, protection class (IP), vibration resistance, mounting position (horizontal/vertical), as well as maximum line length and backpressure per lubrication point.
How to find the right Multi-Line Pump
- List the lube points: Number, location, distance, and required quantity per cycle.
- Define the medium: Oil or grease? Viscosity/NLGI, temperature window.
- Define the cycle: How often, how long, and in what machine timing?
- Size the elements: Pump element volume × cycles = target quantity per point.
- Plan pressure reserve: Line resistance + component backpressure + safety margin.
- Control & monitoring: Level monitoring, operation monitoring, and, if needed, pressure switch/gauge for diagnostics.
Our team supports sizing and bill of materials, from pump configuration through to finished lines including fittings and grease nipples.
Accessories that make the difference
Suitable accessories for multi-line pumps include pump elements in different delivery rates for fine quantity adjustment, agitators and heaters for reliable grease use in cold environments, check valves and end restrictors to stabilize pressure conditions and ensure a clean cutoff of grease flow, as well as level sensors and pressure monitoring that provide early warnings of low medium or a line break. We also offer line kits and, where useful, optional distributors. Although not strictly required in multi-line systems, small branches can be practical when two nearby lubrication points require the same quantity.
Buy Multi-Line Pumps from Sinntec now
At Sinntec, you buy multi-line pumps simply and reliably from a specialist distributor. We stock a wide range of renowned manufacturers with clear technical data, genuine spare parts, and compatible accessories. We ship quickly from stock and give independent advice on which variant makes sense for your use case. No fluff, just practical recommendations on medium, delivery volume, outlets, and connections. On request, we help with product selection for existing systems to ensure everything fits together. If you’re ready to start, request a non-binding quote or a quick phone consultation, just send us the technical key data of your application or the part numbers currently installed, and we will name the suitable pump including available variants and lead time. That way, you quickly get the right product, with dependable availability, honest advice, and a distributor who remains reachable after the purchase.
Use our contact form now, and our sales team will get in touch with you.