Industrialextrusion
machinery.com
About us :: Contact us
Home
Extrusion Process Extrusion Materials Plastic Extrusion Plastic Extrusion Machines Types Of Plastic Extruders Drives And Motors

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

 
Hydraulic Power Drives and Motors


Introduction
Hydraulic Power Drives and MotorsA drive system that is different from the AC and DC drive, this drive does not require a transmission system. It consist of a constant speed AC motor driving a hydraulic pump which in turn drives a hydraulic motor and the associated controls. The entire package is often referred as the hydrostatic drive.

The hydraulic drive are preferred because the drive can be controlled quite well. Advanced version of hydraulic drives is being increasingly used in new and varied applications. Compared to other derives, the advantage of hydrostatic drives for extruders is the elimination of the need for a transmission between the hydraulic motor and extruder screw. The hydraulic drive in ideally suited for operations where there is are a constant requirement for stop and go motion.

Types of hydraulic drives
Hydrostatic drives are presently used in many demanding applications. At least three types of output performance are commonly available.

Variable Power, Variable torque transmissions: are based on a variable displacement pump supplying a variable displacement motor. These transmissions provide a combination of constant torque and constant power. These units are the most adjustable, most flexible and most expensive.

Constant Power, Constant variable torque transmissions: are based on a variable displacement pump supplying fluid to a fixed displacement motor under constant load. Speed is controlled by varying pump delivery. This is considered the best general-purpose drive, with wide speed range and simple controls.

Constant Power Variable Torque: transmission are based on a variable displacement pump with a power limited , driving a fixed displacement motor. Th main strength of this transmission is the efficiency.


Advantages

  • Step-less adjustment of speed, torque and power,
  • Smooth and controllable acceleration,
  • Ability to be stalled without damage
  • Easy controllability.
Extrusion Process
Hot Extrusion
Cold Extrusion
Warm Extrusion
Direct Extrusion And Indirect     Extrusion
Hydrostatic Extrusion
 
Extrusion Materials
Metal
Plastic, Ceramic, And Drug Carriers
Food
Polymeric Materials
 
Plastic Extrusion
Sheet / Film Extrusion
Blown Film Extrusion (Film Blowing)
Overjacketing And Tubing Extrusion
Co-extrusion
Extrusion Coating
Compound Extrusions And Foam      Extrusion
Profile Extrusion
Pultrusion
Crosshead Extrusion Process
    (Wire & Cable Coating)
Monofilament Fiber Extrusion
Extrusion Reprocessing
 
Plastic Extrusion Machines
Film Plant
Mono Layer Blown Film Plant
Extrusion Coating Lamination Plant
Box Strapping Line
Synthetic String Plant
Monofilaments Plant
Power Transmission Equipment
Forming Internal Cavities And      Drives
 
Types Of Plastic Extruders
Basic Extruder Machine
Single Screw Extruder
Twin Screw Extruder
Ram Extruder
 
Drives And Motors
AC Drives and Motors
DC Drives and Motors
Hydraulic Power Drives and Motors
 
Home :: Extrusion Process :: Extrusion Materials :: Plastic Extrusion :: Plastic Extrusion Machines :: Types Of Plastic Extruders :: Drives And Motors