How to use DX68 hose crimper¹ to crimp hydraulic hose?

I meet many new users who fear their first crimp, because the DX68 looks strong and complex.

You use a DX68 hose crimper by preparing the machine, setting the micrometer², connecting power safely, testing the pressure, then crimping inside the mold with the correct withhold size.

I want to walk you through the full process in a simple way, so you can work with confidence and avoid damage to your machine or fittings.

What preparation do you need before installing your DX68 hose crimper?

Many users rush the first setup, and the machine starts with vibration, noise, or oil problems.

You must prepare the right hydraulic oil³, prepare a 6mm cable, and check everything before connecting power. This keeps the machine clean, smooth, and safe.

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When I started my hydraulic business, I learned that good preparation saves time and repair costs. The DX68 needs clean surroundings and the correct oil. I always prepare BP46 hydraulic oil in winter and BP68 in summer, because the machine works better with the right thickness of oil. I also prepare a 6mm cable to connect the machine with the general switch. The machine must start with clean parts and no rusted fittings. Below is a simple table with the preparation steps.

Preparation checklist

I follow this list every time when teaching customers, and it helps them start without trouble.

How do you use the micrometer on a DX68 hose crimper?

New operators often guess the withhold size and damage the mold or fitting.

You set the exact withhold size by using the micrometer scale⁵. One full clockwise turn increases the crimp size⁶ by 1 mm, and one turn back decreases it by 1 mm.

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I like the DX68 micrometer⁷ because it is simple and accurate. When the scale points to 0:0, the withhold size equals the size of the mold. The ring is divided into 100 parts, so each move is very precise. Many beginners ask how much they should crimp. The standard shrink of the internal hole of the fitting should stay between 0.1 and 1 mm. I never go beyond this range, because too much pressure will shorten the fitting life and may even break the mold. Below is a simple breakdown of how to use it.

Micrometer use breakdown

This tool is the key to accurate assemblies, so I always explain it clearly to every new customer.

How do you set up the DX68 for the first time?

Many issues come from wrong oil, wrong electrical checks, or dirty parts.

You must use the right hydraulic oil, keep the machine clean, lubricate the cone, protect your hands, and keep the mold base in its original position after work.

During my early days in the factory, I saw many machines fail because users filled any oil they found. The DX68 works best only with BP46 or BP68. A wrong oil can damage the reversal valve. I also check the electric cabinet only with a skilled electrician. The cabinet is easy to remove by loosening four screws. I never use rusted fittings, because dirt like iron scrap or mud can break the mold. I also brush some butter mixed with hydraulic oil on the cone before use. This keeps the movement smooth. Below is a full breakdown.

Setup and safety breakdown

These steps give your machine a long and smooth life.

How do you connect electricity to the DX68 hose crimper?

Wrong wiring causes loud noise, motor reversal, or failure to start.

You must remove the reserved wires, connect power at the panel joint, and wire correctly for 220V or 380V. Three-phase wiring must connect all live lines.

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When I first learned this machine, I was surprised that many new users use the reserved wires directly. These are not for power, so I remove them and connect electricity at the panel joint. For 220V two-phase power, I connect one live and one neutral. For 380V three-phase power, all three wires must be live. Three-phase power is dynamic electricity, so the motor direction depends on the wiring order. Below is a simple breakdown.

Electrical connection breakdown

This clear method keeps the DX68 safe and ready for the test run.

How do you test-run⁹ the DX68 hose crimper?

A new machine may vibrate or the motor may reverse, so testing is important.

You run the machine without load, check motor direction, adjust wiring if needed, set pressure under 200 kg, and repeat the movement several times.

Every time I start a new DX68, I let it run for at least one minute with no load. For three-phase machines, the fan may run backward. I check the direction within seconds after turning off the power. If wrong, I swap any two live wires. If the noise is loud or the motor feels stuck, I check if all input wires are active. After the direction is correct, I press the close mold button and watch the mold move. If the mold shivers, I turn the plugs around in anti-clockwise direction. I adjust the pressure to stay within 200 kg. Below is a structured breakdown.

Test and adjustment breakdown

A new machine may vibrate because of trapped air. This is normal, and it becomes fine after venting and several cycles.

Conclusion

The DX68 works well when you prepare carefully, use the micrometer correctly, connect power safely, and test the machine before crimping.