Single-Line Pumps: simple, reliable, efficient

Single-line pumps supply many lubrication points via one main line. The result: lower friction, fewer unplanned stops, and longer machine uptime. At Sinntec you’ll find compact solutions for oil and fluid grease: from slim base models to convenient units with integrated controller and level monitoring. The goal isn’t “a lot of lubricant,” but exactly the right amount, clean and predictable.

Single-line in three clear steps

Step one: A pump delivers oil or fluid grease into the main line.

Step two: Metering units release the exact preset quantity at each lubrication point; this prevents over- and under-lubrication.

Step three: Control is time- or demand-based. This makes single-line systems suitable for stand-alone machines with few points as well as automated lines with recurring cycles. The central idea: one header line, many points, adjustable doses. Mechanically robust and easy to understand.

Operational benefits: less effort, more process reliability

Single-line systems are lean by design. One main line means less wiring, fewer sources of error, faster commissioning. The technology is economical: manual relubrication is largely eliminated, consumption stays controlled, and lubricant reaches exactly where it needs to work. This makes maintenance intervals predictable and keeps quality stable, especially in shift operations where repeatability matters.

There’s also flexibility in control: choose an integrated logic for stand-alone operation, or connect the pump to your PLC via signals. You retain full control over intervals, pauses, and process signals. The result is a calm, highly reliable system that fits neatly into existing standards.

Typical applications: from machine tools to energy plants

Wherever components are subjected to recurring, predictable loads, single-line shows its strengths. This includes machine tools with defined cycles, chain conveyors in intralogistics, construction and agricultural machinery in harsh environments, and recycling and energy plants that demand long runtimes. The compact form factor appeals to small machines, while scalable piping suits widely branched installations. Line runs can be laid out logically, and retrofits remain manageable. This is a plus for operators modernizing step by step.

Variants & media: oil or fluid grease: what fits your task?

Oil excels at fine metering and fast distribution. It’s a good choice for short cycles, tight tolerances, and clean environments. Fluid grease (low-viscosity grease) shows its strength under higher loads and fluctuating temperatures; the lubricant film stays robust even when components are exposed to high pressure.
Equally important is the depth of integration:

• Integrated controller: convenient and autonomous. Intervals, pauses, and alarms are managed directly on the unit. Ideal for series machines or when PLC changes aren’t desired.

• External PLC control: maximum freedom in cycle design. You map timing, stops, and process signals centrally in your automation. This is useful on lines with tight cycle coupling.

Selection criteria: how to make the right call

Start with the medium. Check load, speed, and temperature range at the lubrication points. Next, focus on number and location of points: How long are the line runs? How high is back pressure? What reservoir volume makes sense? Then choose the control concept: integrated logic for quick commissioning, or PLC integration for finely tuned timing.

Don’t forget monitoring. Level monitoring signals refilling needs in time; pressure monitoring helps with troubleshooting, for example in constricted lines. Watch for serviceability: robust housings, clearly accessible ports, understandable documentation, and available spare parts. This helps avoid costly downtime when a component needs replacing.

Practical model directions

SKF MKU1 (oil, compact, without integrated controller)

SKF’s MKU1 is a slim entry into oil single-line lubrication when a machine or PLC controller already exists. It stands out with clear wiring and quick integration. Recommended for systems with a manageable number of points, short line runs, and a preference to keep timing in the PLC. Result: precise oil doses, minimal overhead, focused functionality.

Bijur Delimon SureFire II - oil (with integrated controller)

The SureFire II is built for autonomous operation. Interval and pause times are managed directly on the unit, and faults are easy to see. That pays off in series machines or anywhere lubrication should run independently of the PLC. You get a convenient solution that delivers repeatable cycles. This gives you the reassuring sense that the supply is safeguarded within the unit.

Bijur Delimon SureFire II - fluid grease (without integrated controller)

When higher viscosity is required and process logic should remain centralized in your PLC, this combination is compelling. The pump provides robust lubricant volumes for more heavily loaded points, while you map timing and signal handling in the existing program. This eases harmonization with current safety and quality routines.

BEKA MAX Simplex (with controller & level monitoring)

The BEKA MAX Simplex is a fully equipped unit. The controller and level sensing provide day-to-day transparency. That simplifies maintenance and is especially helpful in demanding environments with fluctuating loads. If you rely on continuous, well-monitored lubrication, this is a solid solution with clear signaling and traceable documentation.

Accessories & alternatives: what completes your system

A thoughtful single-line system includes suitable control units, distributors, pressure switches and gauges, plus directional valves. Accessories often decide long-term stability: quality push-in and fittings prevent leaks, clean filters keep the medium free of particles, and correctly sized flow meters avoid downtime risks.

Depending on the application, progressive or multi-line systems can be alternatives, for example when vastly different amounts per point are required or when even finer monitoring of each outlet is needed. The key is honest sizing: analyze loads and cycle times first, then choose the system. That keeps the solution durable and cost-effective.

Sinntec supports you in selecting the right single-line pump

With Sinntec, you’re choosing a partner who thinks single-line lubrication from real-world practice. If you’re unsure which pump is right, we’ll gladly help you decide. Just tell us about your project or the problem at hand. Our range bundles proven brands and variants for different plant structures. The result: a clear, maintainable solution that fits your operations and keeps your production predictable.

If you have further questions, contact us anytime. Our sales team will be happy to assist so you can find the right single-line pump. Here you can find our contact form.