Compressor СБ4/C-100 LB50 – REMEZA

1. Purpose and Operating Principle

Suction-side displacement is 690 l/min, but actual output is 500–550 l/min at 8 bar (the gap between input and output figures is standard practice: part of the volume is lost to compression and internal line resistance). The 4 kW motor runs on a three-phase 380V supply.

The cast-iron LB50 element provides effective heat dissipation and low wear, and the large flywheel-fan creates intense cylinder cooling even during long, continuous operation — this is the key difference from lighter aluminum elements designed for less intensive use.

2. Technical Specifications

3. Design Features

Designation Breakdown — СБ4/C-100 LB50

Design Solutions

• Cast-iron LB50 element — effective heat dissipation and low wear compared to aluminum elements, designed for intensive daily use
• Large flywheel-fan — provides intense cylinder cooling during long, continuous operation, reducing overheating risk
• Belt drive — reduces vibration, noise, and load on the motor compared to coaxial (direct) models of the same power
• 100 l tank — a balance between pressure stability under peak load and compactness for installation in a space-constrained workshop
• High repairability — spare parts for the REMEZA LB50 element are widely available at an accessible price

4. Installation Recommendations

• Power connection — three-phase 380V; confirm the site has a three-phase supply before ordering — this is the model’s key limitation, making it unsuitable for ordinary garages or apartments without three-phase wiring.
• Install the compressor on a flat, level surface, accounting for its 1150×550×1000 mm dimensions; ensure access for belt maintenance, oil changes, and tank drain.
• Due to intensive air delivery, the LB50 element requires effective cooling — during long painting or sandblasting sessions, take breaks to prevent the piston assembly from overheating.
• The 1/2″ outlet connection — select piping and fittings to match this size; for several stations running simultaneously, use a manifold with a gauge.
• Perform the first oil change after 50–100 operating hours, then every 500 operating hours. Drain condensate from the tank daily and check belt tension.
• The 100 l tank may fall under local regulations for pressure vessel operation — check registration requirements in your region.

5. Cross-References and Comparison

Neighboring Models in the REMEZA AirCast and MZB Ranges (Acvatron)

How it differs from the 270 l tank version (СБ4/C-270 LB50): same power and output, but the 100 l tank version is more compact and better suited to small spaces, while the 270 l version holds pressure more stably under very intensive simultaneous demand from multiple stations.

⚠️ Direct cross-reference part numbers from other brands for this model have not been verified. Matching by parameters is possible — send the required output, pressure, and available voltage, and we’ll find a match.

6. Common Mistakes

• Ordering without confirming a three-phase supply — the model only runs on 380V, connecting to 220V isn’t possible; always check the site’s electrical supply before ordering.
• Treating the 690 l/min figure as the actual output delivery — this is a suction-side figure; the actual useful airflow is 500–550 l/min at 8 bar, and that’s the figure to use when sizing tools.
• Continuous operation without cooling breaks — during intensive painting or sandblasting work, prolonged continuous load can overheat the LB50 element; take breaks per recommendations.
• Skipping the first oil change after 50-100 hours — early oil replacement is critical for element break-in; skipping this interval shortens the rated 8,000-10,000+ hour service life.
• Ignoring daily condensate drainage — moisture accumulation in the tank accelerates corrosion and can lead to moisture entering pneumatic tools.

7. Application

• Auto repair shops and service centers — powering impact wrenches (including heavy-duty models), tire service machines, pneumatic jacks
• Professional painting — HVLP and LVLP spray guns, airbrushing and priming with even pressure, no drops
• Construction and renovation — light/medium-duty demolition hammers and concrete breakers, pneumatic sanders (orbital, belt)
• Local sandblasting — wheel cleaning, rust removal from small parts
• Small-scale production — furniture manufacturing (pneumatic staplers, clamps, drilling machines), woodworking, packaging lines with pneumatic cylinders

8. Expert Opinion

“The REMEZA СБ4/C-100 LB50 is a very well-balanced model in terms of output versus compactness. The cast-iron LB50 element consistently delivers 500–550 l/min at the outlet, enough to fully support a mid-sized auto shop or paint area. Over years of practice, I’ve seen this series prove highly reliable. With the maintenance schedule followed (quality oil, timely condensate drainage), the compressor easily runs well over 8,000 hours. I recommend it as one of the best options in the 4 kW class with a 100-liter tank.”

Vitali Boluchevski, Lead Engineer, Acvatron SRL, 18 years of experience

9. FAQ

❓ What’s the actual output delivery? Suction displacement is 690 l/min. Output at 8 bar is 500–550 l/min, depending on ambient temperature and operating conditions.

❓ Is this compressor suitable for a small auto repair shop? Yes, it works very well for auto repair shops and tire centers with a load of 2–3 stations simultaneously.

❓ How does it differ from the 270-liter tank model (СБ4/C-270 LB50)? The 100 l tank version is more compact and better suited to small spaces. The 270 l model holds pressure better under very intensive operation.

❓ How often does maintenance need to be performed? The first oil change is after 50–100 hours, then every 500 operating hours. Drain condensate from the tank daily and check belt tension.

❓ Can the compressor be connected to a single-phase 220V supply? No, the model is designed exclusively for three-phase 380V power. For sites without a three-phase supply, another model in the range is needed (for example, the СБ4/C-100 LB30A on 220V).