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Hydraulic Baler

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Overview

Hydraulic balers use hydraulic oil as the driving medium and generate high pressure through the reciprocating motion of hydraulic cylinders. They compress loose materials—such as waste paper, scrap metal, plastic films, straw, and used tires—into compact, uniform bales. The primary purpose of this equipment is to reduce material volume (the compression ratio typically ranges from 3:1 to 15:1), thereby lowering transportation and storage costs. This also facilitates subsequent recycling processing, such as shredding, smelting, or further refining, particularly in the resource recovery industry (e.g., scrap steel at steel mills and scrap aluminum at aluminum plants).

Operational Principle

Power input and conversion

The motor drives the high-pressure oil pump, which filters and pumps hydraulic oil from the oil tank, converting it into high-pressure hydraulic oil.

Movement (compression)

High-pressure oil is distributed to the individual cylinders. The multi-cylinder system (main cylinder, side cylinders, and door-cylinder cylinder) operates in a fixed sequence, applying pressure to the material from multiple directions.

Note: Metal bundling typically involves “pre-compaction” and “final pressing” to achieve the required density.

Maintain pressure and shaping

Once the preset pressure is reached, the system enters a hold state, maintaining the pressure for several seconds to ensure that the material undergoes plastic deformation without rebounding.

Resetting and Shell Ejection

Once compression is complete, the door opens, and the main cylinder continues to push the compressed package out of the compression chamber. The remaining cylinders are sequentially retracted to their original positions, ready for the next loading cycle.

Features

Significantly reduce transportation costs

This is the primary value of the baler. By compressing bulk materials to one-fifth or even less of their original volume, it significantly increases the loading capacity per vehicle and reduces the costs of long-distance transport.

High pressure and high efficiency

The pressure range is broad. By combining PLC microcomputer control with micro-motor or proportional-valve technology, the packaging machine operates at high speed with minimal impact and efficiently processes large quantities of material.

Robust and durable construction

The main chassis is constructed from high-quality, thickened steel plates welded together, ensuring the equipment’s durability under high-voltage and high-frequency conditions, thereby extending its service life and reducing the failure rate.

Intelligent and secure

The machine is equipped with automatic fault diagnosis and alarm functions. In addition, safety interlock devices—such as door-lock sensors and emergency stop buttons—ensure that the machine cannot start under abnormal conditions or when the door is open, thereby safeguarding operator safety.

Parameter

Parameter Item	Typical Specification	remarksRemark
Nominal Pressure Pressing Force	63–200 t
Bale size	Customizable (e.g., 1100×700×900 mm)
Bale weight	300–1,200 kg/pack	Visual materials
Motor Power	15–45 kW
Power Supply	380V / 50Hz (60Hz available upon customization)
Control Method: Control	PLC control, automatic/semi-automatic
Optional Configuration Options	Conveyor, automatic bundling, weighing system
Applicable Materials	Waste paper, plastics, metal shavings, and combustible municipal solid waste (RDF)