320 Ton Horizontal Injection Moulding Machine (C Series)
The C Series 320 Ton is a horizontal plastic injection moulding machine from Pratishna Engineers, the largest model in the C Series, built for paint and industrial pails, large tubs and high-cavity container moulds. It offers two screw options from 60 to 65 mm with shot weights from 699 to 821 g (PS), injection rates up to 300 cc/sec and a 1125 mm daylight opening, with the injection unit, clamp, hydraulics and controls matched to container moulding.
Pratishna Engineers is one of the top and trusted 320 ton container injection moulding machine manufacturers in India. The Mumbai-based company has 35+ years of experience and has supplied 9,000+ machines to 1,000+ customers, offering the C Series 320 Ton in two screw configurations, backed by in-house engineering and after-sales support.
- Clamping force
- 320 T
- Screw options
- Ø60 · Ø65
- Shot weight
- 699 – 821 g
Need Help Selecting a C Series 320 Ton Machine?
Contact Pratishna Engineers to discuss your plastic injection moulding requirements and request C Series 320 ton specifications, application guidance and a quotation.
C Series 320 Ton Specifications
The C Series 320 Ton is available in two screw configurations: A (Ø60 mm) and B (Ø65 mm). Injection unit values vary by screw; clamping, ejector and general specifications are common to all. Specifications are subject to change in line with continuous product development.
Injection unit | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 60 mm | 65 mm |
| Screw diameter | mm | 60 | 65 |
| Screw L/D ratio | — | 18:1 | 16.6:1 |
| Max. swept volume | cm³ | 777 | 912 |
| Max. shot weight (PS) | g | 699 | 821 |
| Max. injection pressure | kg/cm² | 1775 | 1513 |
| Rate of injection | cc/sec | 255 | 300 |
| Screw speed | rpm | 250 | 250 |
| Nozzle force | Tons | 7.5 | 7.5 |
Hydraulic ejector | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 60 mm | 65 mm |
| Ejector stroke | mm | 150 | 150 |
| Ejector force | Tons | 7.5 | 7.5 |
Locking unit | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 60 mm | 65 mm |
| Mould clamping force | Tons | 320 | 320 |
| Mould clamping stroke | mm | 500 | 500 |
| Mould thickness (min – max) | mm | 200 – 625 | 200 – 625 |
| Max. daylight opening | mm | 1125 | 1125 |
| Space between tie bars (H × V) | mm | 600 × 594 | 600 × 594 |
| Platen size | mm | 910 × 930 | 910 × 930 |
General | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 60 mm | 65 mm |
| Servo motor | kW | 36 | 36 |
| Heating capacity | kW | 22 | 22 |
| Total connected load | kW | 58 | 58 |
| Tank capacity | Litres | 610 | 610 |
| Machine weight | Tons | 10.5 | 10.5 |
| Floor space (L × W × H) | m | 6.2 × 1.75 × 2.2 | 6.2 × 1.75 × 2.2 |
Key Features
- Injection rate up to 300 cc/sec for fast filling of thin-wall containers
- Two screw options: the 60 mm screw reaches 1,775 kg/cm² injection pressure and the 65 mm screw gives shots up to 821 g (PS)
- Clamping stroke of 500 mm and 1125 mm daylight opening for moulds 200 to 625 mm thick
- Tie-bar space of 600 × 594 mm and platens of 910 × 930 mm
- Hydraulic ejector with 150 mm stroke and 7.5 tons force for deep containers
- Servo motor of 36 kW, with a total connected load of 58 kW
Applications
The C Series 320 Ton is commonly used for the largest containers and pails in the C Series range, before moving to two platen machines.
Paint and industrial pails
- Image to be provided by client
Pail lids with tamper-evident rings
Large square tubs
- Image to be provided by client
Large IML containers
- Image to be provided by client
High-cavity thin-wall moulds
- Image to be provided by client
Storage containers
- Image to be provided by client
Crate and bin lids
Other C Series Models
Need a Different Tonnage?
Compare the full C Series range from 140 to 320 tons and get a suitable recommendation.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
- Machine Lifecycle Support
Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
C Series 320 Ton Specification Sheet
The full C Series 320 Ton data for each screw option: screw diameter, shot weight, injection pressure and rate, clamping stroke, mould thickness, daylight, tie-bar space, platen size, ejector, motor power, weight and floor space.
Download PDFPDF · 80 KB- Image to be provided by client
C Series Catalogue
The C Series container making range from 140 to 320 tons, with model and screw options, main features and packaging applications.
Download PDFPDF · 2.9 MB 
Clamping Force & Shot-Size Calculation Guide
A clear method for calculating the clamping force and shot size your part needs, covering projected area, injection pressure, safety factor, number of cavities, part and runner weight, and material.
Download PDFPDF · 363 KB
FAQs / Buyer Questions
The answers our engineers give most often about the 320 Ton, before a specification is agreed.
What Is the C Series 320 Ton Injection Moulding Machine?
It is a horizontal plastic injection moulding machine from Pratishna Engineers, the largest model in the C Series, built for paint and industrial pails, large tubs and high-cavity container moulds.What Can I Manufacture on a 320 Ton Container Machine?
Typical products include paint and industrial pails, pail lids with tamper-evident rings, large square tubs, large iml containers and high-cavity thin-wall moulds.How Do I Know if 320 Ton Is Enough for My Container?
Required clamping force depends on the projected area of all cavities, wall thickness, flow length and material, with a safety factor. Thin-wall parts need more pressure and clamp margin than their weight suggests. Share your container and mould details and Pratishna Engineers will confirm whether the 320 Ton is suitable.What Are the Screw Options on the C Series 320 Ton?
The 320 Ton is available with two screws: the 60 mm screw gives a 699 g shot at up to 1,775 kg/cm² and 255 cc/sec; the 65 mm screw gives an 821 g shot at up to 1,513 kg/cm² and 300 cc/sec. Clamping, ejector and general specifications are common to all screw options.What Mould Size Fits the 320 Ton?
The 320 Ton takes moulds 200 to 625 mm thick within a tie-bar space of 600 × 594 mm, on platens of 910 × 930 mm, with a 1125 mm daylight opening and 150 mm ejector stroke.
What Plastic Materials Can the 320 Ton Machine Process?
Depending on configuration, it can process PP copolymer, high-flow PP, HDPE, LDPE, PS and other thermoplastics used in packaging, as well as engineering plastics.If 320 Ton Is Not the Right Size, What Other Options Are There?
The C Series also offers 140 Ton, 180 Ton, 220 Ton and 260 Ton models. Larger pails and containers can move to the PHM Series two platen machines, and smaller parts to the E Series.Does Pratishna Provide Installation and After-Sales Support?
Yes. Installation, commissioning, operator training, spare parts and after-sales technical support are provided as part of Pratishna’s machine lifecycle services.How Do I Get a Price for the C Series 320 Ton?
Share your container drawing, material, part weight, mould dimensions, cavities, production quantity and cycle time, and Pratishna Engineers will evaluate the configuration and provide a quotation.
Related Blogs, Guides & Articles
Large IML Containers: Daylight and Ejector Stroke on a 320 Ton Machine
IML container moulding at 320 t: how to budget daylight and opening for a robot, size ejector stroke for tall containers, and check mould fit and labels.
Paint Pail Moulding on a 320 Ton Machine
Paint bucket making machine checks at 320 t: clamp and stroke by pail size, resins, lids and tamper bands, and India's recycled-content rules for pails.
What Can You Make on a 320 Ton Container Moulding Machine?
What a 320 ton container moulding machine can make: large tubs, pails, crate lids and thin-wall lids, the clamp method, and the limits beyond clamp.
When to Move From a 320 Ton Toggle Machine to a Two Platen Machine
Two platen vs toggle machine at around 320 t: how the clamps differ, when stroke, mould height or length decide, and what changes in running cost.
Talk to Our Engineers
Planning a New Injection Moulding Project?
Share your component, material, mould and production target. Our engineering team will help you identify the right machine configuration.
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