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Cyclone W-0.67EU Belt Driven Air Compressor Three Phase Cast Iron Professional Line Air Compressor for Industrial Workshop Use Workshop & Professional Use Professional Workshop Applications

Engineered for professional industrial performance and stable high airflow output, the Cyclone 300L 5.5kW (7.5HP) three-phase belt driven air compressor is equipped with a heavy-duty cast iron pump, designed to meet the continuous operation needs of industrial workshops, multi-tool stations and medium-to-heavy pneumatic equipment. This 380–400V unit delivers reliable, high-efficiency compressed air, backed by strict quality control and robust structural design to ensure long-term durability in harsh working environments.

Category:

Belt Driven Compressors-(Japan/USA Style Casting iron Air Pump)

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Product Details

On the technical data plate we will state following information
Name	Thee Phase Casting Iron Professional Line Air Compressor
Cyclone Model NO:	W-0.67EU
Motor Peak Power	5.5KW/7.5HP
Input Voltage:	380-400V/50HZ
Max Air Delivery	787L/min
Air Delivery @ 60Psi	734L/min
Air Delivery @ 90Psi	696L/min
Motor capacitor	N/M
Pump Shaft Rated Speed	870r.p.m,
Bore / Piston Size	Dia.80mm*2
Stroke Length	60mm
Pump Flywheels	370mm
Motor pulley size	110mm
Pump Lubricate Oil capacity	1.6L
Rated Electric Current	11A
Overload Current Protector	13A
Startig Capacity	300V,with 20M power calbe
Cut●In pressure	8Bar / 0.8Mpa / 116PSI
Tank Capacity	Ce/ASME Qualified 300Lt Air Tank
Noise (Lwa)	95dB
N.W/G.W	194Kgs / 226Kgs.
Packing Size(L+W*H)	16756114CM
Medium	Nonlethal Compressed Air

Key Features

● Heavy-Duty Cast Iron Air Pump: Industrial-grade cast iron construction ensures excellent wear resistance, heat dissipation and long service life, suitable for continuous medium-to-heavy duty operation.

● High Airflow Output: Delivers up to 787L/min max airflow, capable of supporting multiple pneumatic tools and industrial equipment in workshop environments.

● 300L Large-Capacity Air Tank: CE/ASME qualified thick-gauge steel tank provides stable pressure retention and extended continuous runtime, reducing frequent pump startup and wear.

● Three-Phase Stable Operation: 380-400V three-phase power supply ensures stable performance, strong power output and low energy consumption during long working hours.

● Low-Speed Stable Operation: 870r.p.m pump shaft rated speed, matched with 370mm flywheel, ensures smooth operation, reduced vibration and low noise.

● Robust Structural Design: Reinforced frame, large anti-slip wheels and professional mounting structure, designed for stable placement and easy movement in industrial workshops.

● Comprehensive Safety Protection: Equipped with 13A overload current protector and pressure relief valve, effectively preventing motor damage and ensuring safe operation.

Expert Advice

● Daily Tank Drainage: Always drain condensed moisture from the 300L tank after each use, or more frequently in humid environments, to prevent internal corrosion, water contamination and ensure compressed air quality.

● Electrical Safety: Use a dedicated 380-400V three-phase power supply; avoid using extension cords to prevent voltage drop, overheating and permanent motor damage. Ensure the power supply is properly grounded.

● Ventilation & Cooling: Operate the compressor in a well-ventilated, spacious area with adequate clearance around the motor and pump, to ensure effective heat dissipation and avoid overheating during continuous operation.

● Pre-Use Check: Before each startup, inspect the drive belt tension, air hoses, fittings and connections for wear or leaks; verify the pump lubricating oil level (1.6L capacity) is within the recommended range.

● Regular Maintenance: Follow the recommended maintenance schedule for oil checks and replacements, air filter cleaning, belt tension adjustment and flywheel inspection to keep the pump running smoothly and extend service life.

● Pressure Control: Do not exceed the cut-in pressure of 8Bar; adjust the pressure regulator according to the actual needs of the pneumatic tools to avoid equipment damage.

Troubleshooting Guide

Problem

Possible Cause

Recommended Solution

Compressor fails to start

1. No power supply / faulty plug, cable or socket

2. Blown fuse or tripped circuit breaker

3. Overload protection activated due to overheating

4. Defective pressure switch

1. Verify power supply, inspect plug, cable and socket for damage; ensure three●phase power connection is correct

2. Reset circuit breaker or replace the fuse with the correct rating

3. Allow the motor to cool completely, then restart the unit

4. Test and replace the pressure switch if it fails to activate properly

Motor runs but pump does not operate

1. Loose or broken drive belt

2. Misaligned motor and pump pulleys

3. Jammed or seized pump mechanism

1. Inspect, adjust or replace the drive belt; ensure proper tension

2. Align pulleys to correct position to ensure smooth transmission

3. Disassemble the pump to remove debris or obstructions; check piston movement

Pressure builds too slowly or fails to reach rated pressure

1. Air leaks in hoses, fittings, check valve, or tank

2. Worn piston rings, valves, or seals in the pump

3. Clogged air intake filter

4. Pressure regulator set incorrectly

1. Perform a leak test with soapy water; tighten connections or replace faulty parts

2. Inspect and replace worn piston rings, reed valves, or seals to restore airtightness

3. Clean or replace the air filter to restore airflow

4. Adjust the regulator to the correct working pressure; check for regulator damage

Excessive noise, vibration or unusual rattling

1. Loose mounting bolts, fasteners, or pump components

2. Worn motor or pump bearings

3. Damaged or unbalanced flywheel4. Unit placed on an uneven or unstable surface

1. Tighten all bolts and fasteners securely, including motor mounts and pump bolts

2. Inspect and replace worn bearings to eliminate noise and vibration

3. Service or replace the flywheel if damaged or out of balance

4. Position the compressor on a flat, level, and stable surface; check anti●slip feet

Motor overheats or shuts down prematurely

1. Poor ventilation or blocked cooling vents

2. Continuous operation beyond the rated duty cycle

3. Low oil level or degraded pump oil4. Dirty or clogged cooling fins

1. Move to a well●ventilated area; clear obstructions around vents and cooling fins

2. Follow duty cycle guidelines; allow sufficient cooling breaks between continuous runs

3. Check and top up pump oil to the correct level (1.6L); replace oil if contaminated4. Clean cooling fins to improve heat dissipation

Air pressure drops significantly under load

1. Undersized, kinked, or damaged air hoses

2. Incorrectly adjusted or faulty pressure regulator3

. Leaking check valve in the tank

4. Excessive air consumption from connected tools

1. Replace with correct diameter hoses (1/2" or larger), remove kinks, repair leaks

2. Calibrate or replace the pressure regulator to ensure stable pressure output

3. Inspect, clean, or replace the check valve to maintain tank pressure

4. Ensure total air consumption of connected tools does not exceed the compressor’s max air delivery (787L/min)

FAQs

▼ What size air compressor do I need?

The right compressor depends on your CFM requirements. For heavy●duty industrial use, multi●station workshops, impact wrenches, spray guns and continuous pneumatic equipment, the Cyclone W●0.67EU 300L 7.5HP model provides professional●grade airflow and stable pressure.

▼ How often must I drain an air compressor?

Drain the tank daily after use, especially in humid environments, to prevent internal corrosion and water contamination.

▼ What oil do I use in my air compressor?

Use professional compressor●grade non●detergent oil. This model uses 1.6L of oil; refer to the manual for recommended viscosity.

▼ Can I use an extension cord with my compressor?

It is strongly recommended to use a fixed three●phase power supply. Extension cords are not suitable for industrial 380●400V models.

▼ What size air hose should I use?

For high●flow industrial applications, use 1/2" (13mm) or larger diameter hoses to avoid pressure drop and ensure efficient airflow.

Keywords:

cast-iron pump air compressor

oil-lube air compressor

piston air compressor