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Custom Hoists Cylinders Parts and Service

Custom Hoists Cylinders

Custom Hoists is a diversified global manufacturing company and a leading supplier of telescopic and single stage hydraulic cylinders since 1973. Custom Hoists cylinders are designed to work in several robust applications.

Are your Cylinder Needs Unique?

No problem! Custom Hoists Cylinders can be custom manufactured to meet your specific requirements and applications.

Don’t Know Where To Start?

Get in touch with a Custom Hoists cylinders specialist from Metronome Mechanical’s world class customer service team who will guide you from start to finish. Let’s get started today!

Single & Double Acting Telescopic Custom Hoists Cylinders

Custom Hoists cylinders makes telescoping cylinder models for every mounting configuration, including hydraulic pumps and wet kits.

  • Broadest product offering in the industry covering virtually any dump truck or trailer application
  • New 5000 series hybrid design utilizing large North American tube sizes with a European look
  • Manufacturing locations in the U.S.A. and China
  • Local inventory available
custom hoists cylinders

Custom Hoists Cylinders

5000 Series

Custom Hoists Cylinders

4000 Series

Custom Hoists Cylinders

4000 Series Invert Mount

Custom Hoists Cylinders

Telescopic Custom Hoists Cylinders

Single Acting Telescopic Custom Hoists Cylinders

To Extend:

Custom Hoists Cylinders telescopic

High pressure oil from the pump is directed by the control valve through port (A) to fill the cylinder. Any air in the hydraulic system will be trapped in the end of the cylinder (B) and may be bled off through the bleeder valve (C). It is advisable to bleed air from the cylinder on initial start up and on a weekly basis thereafter.

As the system pressure rises, the oil pushes on the bottom of the largest plunger (F) forcing it to move out. The outside diameter or sealing area of the plunger (D) determines the effective area.

As the plunger extends, the oil trapped between the plunger wall (E) is released through internal port holes in the plunger. When the largest stage is fully extended, the next largest will proceed to extend, etc.

To Retract:
A single-acting telescopic custom hoists cylinder must be retracted by gravity or mechanical means.

Double Acting Telescopic Custom Hoists Cylinders

To Extend:

Custom Hoists Cylinders

High pressure oil is directed by the control valve into extend port (A). The oil passes through an inner (transfer) tube in the smallest plunger to the base of the cylinder. The pressure acts on the effective area of the largest piston (F) and extends all stages to the first plunger stop.

The next stage then begins to extend. The effective area of each stage is figured from the inside diameter of the next largest stage. Each stage extends in its turn to the plunger stop.

Oil trapped between the plungers escapes through internal port holes (C) in each plunger and returns to tank through retract port (B).

To Retract:

High pressure oil is directed by the control valve into retract port (B). The pressure is applied to the effective area of the smallest plunger (D) which retracts first. Each stage from the smallest to the largest retracts in its turn. The effective area for retracting each stage is the area of the plunger (D).

Oil inside the custom hoists cylinder is forced out of extend port (A). Because of the area differential between the retract side and extend side the flow into retract port (B) must be multiplied by this differential to determine the flow out of port. It may be necessary to install a dump-to-tank valve to speed up the retracting cycle.