The hydraulic briquetting machine for metal chips.
6 models for every size of mechanical workshop
Compacts aluminum, steel, cast iron, brass, copper chips, and all metals. Recovers up to 90% of coolant. Increases the commercial value of your scrap by 50%.
How Metalpress Series Briquetting Machines Work
The operation of Metalpress Series briquetting machines is based on a high-pressure mechanical and hydraulic cycle: the material, fed by an agitator, is metered by a drawer, operated by a hydraulic cylinder, into the compaction chamber, where a hydraulic compaction cylinder compresses it to form a cylindrical briquette. A gate equipped with a hydraulic cylinder manages the briquette ejection.
The Metalpress Series (excluding the 100 EVO) is designed to integrate into COMAFER automated centralized systems or with other feeding systems, both in indoor and outdoor environments
During pressing, the coolant contained in the chips is mechanically separated. Metalpress models can be equipped, upon request, with special liquid collection and recovery tanks with drainage electric pump (standard on the 900 EVO), allowing up to 90% coolant recovery.
From hopper to briquette
How Metalpress series briquetting machines transform waste chips into resources in 4 stages.
01
Feeding
A hopper with motorized agitator ensures continuous feeding of metal chips
02
Metering
A drawer operated by a hydraulic cylinder meters the material into the compaction chamber
03
Compaction
A compaction cylinder compresses the chips at pressures up to 3764 kg/cm2, separating the coolant during pressing
04
Ejection
A gate with specific anti-wear treatments, equipped with a hydraulic cylinder, ejects the finished briquette
Advantages of briquetting with the Metalpress Series
–90% volume
Optimized spaces with increased efficiency, therefore less volume, more order, and more productivity
–70% recycling costs
Fewer containers, fewer trips, higher sales margin
+90% coolant recovery
All expensive coolants, which would be lost, are recovered during pressing, collected in a dedicated tank, and reintroduced into the machine tool, eliminating waste
–80% handling and transport costs
Drastic reduction in bin emptying operations with consequent forklift movement, reduced operator time with increased safety and greater resource efficiency
+50% commercial value and +90% melting yield
Higher commercial value as briquettes are compacted at very high pressures compared to chips, thus reducing transport costs and significantly superior melting yield
Environmental compliance
Transporting compacted chips eliminates the risk of spilling liquids harmful to the environment, avoiding serious administrative and criminal penalties, fewer trips to collection centers, lower CO2 emissions, circular economy, and ISO 9001:2015 certified green choice
–90% volume
Optimized spaces with increased efficiency, therefore less volume, more order, and more productivity
–70% recycling costs
Fewer containers, fewer trips, higher sales margin
+90% coolant recovery
All expensive coolants, which would be lost, are recovered during pressing, collected in a dedicated tank, and reintroduced into the machine tool, eliminating waste
–80% handling and transport costs
Drastic reduction in bin emptying operations with consequent forklift movement, reduced operator time with increased safety and greater resource efficiency
+50% commercial value and +90% melting yield
Higher commercial value as briquettes are compacted at very high pressures compared to chips, thus reducing transport costs and significantly superior melting yield
Environmental compliance
Transporting compacted chips eliminates the risk of spilling liquids harmful to the environment, avoiding serious administrative and criminal penalties, fewer trips to collection centers, lower CO2 emissions, circular economy, and ISO 9001:2015 certified green choice
Metalpress series models
Metalpress 100 EVO
Application
Stand-alone
Indicative hourly production
20-50 kg/h
Briquette dimensions
Ø 50mm
Metalpress 150 EVO
Application
SMEs
Indicative hourly production
50-150 kg/h
Briquette dimensions
Ø 60mm
Metalpress 150 EVO S
Application
SMEs
Indicative hourly production
50-150 kg/h
Briquette dimensions
Ø 60mm
Plus
Automatic briquette length adjustment, oil cooling system, Siemens HMI
Metalpress 500 EVO
Application
Medium-sized companies
Indicative hourly production
100-400 kg/h
Briquette dimensions
Ø 60/70 mm
Plus
300 bar pressure, automatic briquette length adjustment, oil cooling system, Siemens HMI
Metalpress 700 EVO
Application
Large companies
Indicative hourly production
100–600 kg/h
Briquette dimensions
Ø 60/70 mm
Plus
300 bar pressure, top specific briquette pressure, automatic briquette length adjustment, oil cooling system, Siemens HMI
Metalpress 900 EVO
Application
Structured companies / high volumes
Indicative hourly production
400–1200 kg/h
Briquette dimensions
Ø 80 mm
Plus
300 bar pressure, top power and hourly production, automatic briquette length adjustment, oil cooling system, Siemens HMI
Compatible materials
Which metal chips can you briquette with the Metalpress Series?
The Metalpress Series is designed to compact chips and powders from mechanical processing.
Unlike briquetting machines for organic materials, Metalpress machines operate at pressures up to 3764 kg/cm2 to ensure high-density metal briquettes, ready for delivery to foundries or collection centers.
Do you have a particular material? Send us a test sample: our internal laboratory tests any material before purchase.
FAQ
Metalpress Series FAQ
What is the main advantage of briquetting metal chips instead of selling them loose?
Metal briquettes have a commercial value 50% higher than loose chips because they guarantee a melting yield 90% superior. Pressing removes the coolant (recoverable up to 90%).
Which Metalpress model should I choose for my mechanical workshop?
It depends on the hourly chip production. For small workshops: 100 EVO (20–50 kg/h). Small-medium companies: 150 EVO or 150 EVO S (50–150 kg/h). Medium companies: 500 EVO (100–400 kg/h). Large companies: 700 EVO (100–600 kg/h). Large facilities: 900 EVO (400–1200 kg/h).
What is the difference between Metalpress 150 EVO and 150 EVO S?
Same basic technical characteristics. The 150 EVO S adds automatic briquette length adjustment via position transducers — essential when processing chips of different types and sizes without operator intervention — and Siemens HMI panel for complete control
Does the Metalpress Series really recover up to 90% of coolant?
Yes, indicatively. During high-pressure pressing, the coolant is mechanically expelled and collected in integrated recovery tanks. Actual recovery depends on chip type and initial content. Recovered coolant can be reused in the production cycle.
Can I briquette mixed chips?
It depends on the final use. For sale to foundries, briquettes must be homogeneous by metal type. For mixed chips with ferrous inclusions, COMAFER offers a centralized system with vibrating table and magnetic drum that automatically separates ferrous parts before briquetting.
Does the Metalpress work with dry chips without coolant?
No. Without the lubrication system accessory, there is a risk of bushing seizure as well as friction and premature wear of internal components.
How is Metalpress maintenance managed?
The 500–700–900 EVO models have a maintenance deadline notification system integrated into the Siemens HMI. COMAFER offers scheduled maintenance contracts and after-sales assistance with qualified technicians and spare parts warehouse, even for discontinued machines.
Why Choose COMAFER
50 years of experience in industrial briquetting
- Founded in 1975 in Brescia — 50 years of continuous production
- Over 30,000 machines sold in more than 70 countries, 20,000+ satisfied customers
- UNI EN ISO 9001:2015 certification since 1999
- Made in Italy — 1,800 m2 facility in Collebeato (Brescia)
- Premium components: mechanical, hydraulic, electrical and electronic systems among the best on the market
- More than 130 specific checks during testing for each machine
- After-sales service with qualified technicians, structured spare parts warehouse, even for discontinued machines
- Scheduled maintenance contracts
- Custom solutions
- Member of ACIMALL, AMAFOND, CONFAPI
Find the right solution for your company
Tell us about your production requirements: volume of waste chips, type of material, and frequency of use. Our sales representatives will recommend the most suitable model or installation and the best quality-to-price ratio.
Steel
Stainless steel
Cast iron
Iron
Aluminum
Brass
Bronze
Copper
Nickel
Titanium
Zinc
Tin
Lead
Gold
Platinum
Silver
Tungsten
Aluminum pods
Mixed chips