КРШАТУН ЦИЛИНДРОВГидравлические цилиндры и силовые агрегаты[email protected]
Hydraulic Knowledge

How to Size a Hydraulic Power Unit for a Cylinder Circuit

Август 19, 2026

A power unit must deliver pressure for force and flow for speed while staying within motor, pump, valve, reservoir and thermal limits.

1. Define Force and Pressure

Use cylinder area and machine load to determine working pressure, including linkage and pressure losses.

2. Convert Speed to Flow

Flow equals effective area times piston velocity. Extend and retract can require different flow for equal speeds.

3. Check Motor Supply and Duty

Battery lifts may use short bursts; production machines can cycle for hours. Electrical supply and thermal duty should follow the real cycle.

4. Define Valve Logic

Direction, load holding, controlled lowering, regeneration and proportional motion are circuit functions. Send a schematic or motion sequence.

5. Package the Reservoir and Service Access

Tank orientation, suction conditions, return path, fill/filter access and hose clearance affect reliability.

Frequently Asked Questions

Which comes first, cylinder or power unit?

Define the cylinder operating point and machine motion together.

How does bore affect flow?

Larger area needs more flow for the same speed.

Why does duty matter?

Motor and oil temperature depend on time and repetition.

Is relief a speed control?

No; flow/circuit strategy controls speed.

What should I send?

Cylinder data, load, cycle time, electrical supply, valve sequence, duty and package constraints.

Обсудите ваши требования к гидравлической системе.

Укажите диаметр цилиндра, ход поршня, способ крепления, давление, каналы, нагрузку и режим работы. Для замены приложите фотографии и точные размеры.

Напишите на [email protected]