Scrap Metal Baler

Why Buyers Choose a Scrap Metal Baler

Scrap yards, steel mills, aluminum plants and auto-part factories generate loose metal waste every day: iron chips, turnings, plate offcuts, cans, iron sheet, stamping skeletons. The problem is volume — the material is light and bulky: a truck carries only a few tonnes of loose scrap, the warehouse fills up, and furnace charging is slow and uneven.

Scrap metal baler solves this by cold-pressing loose scrap into dense bales. The same material shrinks to a fraction of its volume: a truck carries far more tonnes per load, bales stack neatly in the warehouse, and the furnace takes whole bales directly. Cold pressing — no heating, no additives — fully preserves the metal, and the bale is ready-to-charge furnace feedstock.

What the Scrap Metal Baler Solves

Transport cost: loose scrap is bulky and light, and freight is charged per truck. Baled scrap raises density, doubles the tonnes per load and cuts transport cost sharply.

Storage space: loose piles hold little; bales stack in neat layers and multiply warehouse utilization.

Slow furnace charging: loose scrap feeds slowly and unevenly; bales charge fast and evenly, speeding the melt and lowering smelting cost.

Trading: loose scrap is hard to measure and grade; bales are uniform in size and density — easy to weigh and price.

Working Principle

On the scrap metal baler, a motor drives the hydraulic pump (plunger type); oil flows through the valve block into the main cylinder, and the piston pushes the pressing head to compress the charge. One cycle:

Loading: loose scrap is charged into the hopper (feed box)

Pre-press: the head makes a first pass, compacting the loose charge in the pre-chamber

Main press: continued pressure gives the second squeeze to the set density; multiple press-and-hold passes

Forming: the bale holds at set pressure and takes shape

Door open: the hydraulic lock releases and the door opens

Ejection: the ejector pushes the bale out of the door

Tying: bale wires are applied (manual or auto tying), and the cycle repeats

Pressure is set per material and shown on the gauge; PLC runs the automatic cycle, and one operator handles the whole machine.

Custom Bale Size

On this scrap metal baler, bale size (L × W × H) is built to your requirement [to be confirmed: typical bale sizes]. Hopper volume, main cylinder stroke and door size define the maximum bale; size it to your storage and transport conditions:

Bale shape: rectangular standard; octagonal and cylindrical on request

Measured bale density: light steel scrap (iron sheet, thin plate, car frames) 1.4–1.8 t/m³; aluminum scrap (profiles, sheet, cans) 0.8–1.1 t/m³ — measured values, not theoretical

The rule: set the bale size and density target first, then the hopper and pressing force — sizing the other way wastes tonnage

Overall Structure

The scrap metal baler is built around seven assemblies:

Hopper (feed box): holds loose scrap; divided into pre-chamber and main chamber

Main press: main cylinder and pressing head — the core compression assembly

Door (discharge gate): seals the outlet during forming, hydraulically locked; optional shear blades

Hydraulic system: plunger pump, oil tank, valve block, cooler, filters

Ejector: pushes the formed bale out of the door

Frame: welded steel plate, stress-relieved after welding; takes the full pressing reaction

Electrical control: PLC, manual and automatic cycles, pressure and stroke set per material

Technical Specifications