250 Ton Two Platen Injection Moulding Machine (PHM Series)
The PHM 250 Ton is a two platen hydro-mechanical injection moulding machine from Pratishna Engineers, built for large crates, dustbins, stools, battery containers and appliance housings. It offers two screw options of 65 and 70 mm with shot weights of 836 and 969 g (PS), a 1150 mm clamping stroke and a 1400 mm daylight opening.
Pratishna Engineers is one of the top and trusted 250 ton two platen injection moulding machine manufacturers in India. Operating from Mumbai for 35+ years, the company has supplied 9,000+ machines to 1,000+ customers, and its hydro-mechanical two platen machines were among the first of their kind developed in India, backed by in-house engineering and after-sales support.
- Clamping force
- 250 T
- Screw options
- Ø65 · Ø70
- Shot weight
- 836 – 969 g
Specifications, applications and a quotation for the 250 Ton
PHM 250 Ton Specifications
The PHM 250 Ton is available in two screw configurations: A (Ø65 mm) and B (Ø70 mm). Injection unit values vary by screw; clamping, ejector and general specifications are common to both. Specifications are subject to change in line with continuous product development.
Injection unit | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 65 mm | 70 mm |
| Screw diameter | mm | 65 | 70 |
| Screw L/D ratio | — | 18:1 | 16.8:1 |
| Max. swept volume | cm³ | 928 | 1077 |
| Max. shot weight (PS) | g | 836 | 969 |
| Max. injection pressure | kg/cm² | 1642 | 1416 |
| Rate of injection | cc/sec | 325 | 377 |
| Screw speed | rpm | 250 | 250 |
| Nozzle force | Tons | 7.5 | 7.5 |
Hydraulic ejector | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 65 mm | 70 mm |
| Ejector stroke | mm | 200 | 200 |
| Ejector force | Tons | 9.5 | 9.5 |
Locking unit | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 65 mm | 70 mm |
| Mould clamping force | Tons | 250 | 250 |
| Mould clamping stroke | mm | 1150 | 1150 |
| Mould thickness (min – max) | mm | 250 – 700 | 250 – 700 |
| Max. daylight opening | mm | 1400 | 1400 |
| Space between tie bars (H × V) | mm | 640 × 640 | 640 × 640 |
| Platen size | mm | 1080 × 1128 | 1080 × 1128 |
General | Option A | Option B | |
|---|---|---|---|
| Specification | Unit | 65 mm | 70 mm |
| Servo driven pump | kW | 36.1 | 36.1 |
| Heating capacity | kW | 26.1 | 26.1 |
| Total connected load | kW | 62.2 | 62.2 |
| Tank capacity | Litres | 770 | 770 |
| Machine weight | Tons | 12.5 | 12.5 |
| Floor space (L × W × H) | m | 6.0 × 1.9 × 2.3 | 6.0 × 1.9 × 2.3 |
Key Features
- Hydro-mechanical locking with balanced clamping force across the mould face, which reduces corner flash on large parts
- Clamping stroke of 1150 mm and 1400 mm daylight opening for deep moulds 250 to 700 mm thick
- Two screw options: the 65 mm screw reaches 1,642 kg/cm² and the 70 mm screw gives shots up to 969 g (PS)
- Tie-bar space of 640 × 640 mm and platens of 1080 × 1128 mm
- Hydraulic ejector with 200 mm stroke and 9.5 tons force
- Servo-driven pump of 36.1 kW and much less oil than a ram or direct-lock machine
- Moving platen on a linear motion guide, and Vignan SV 84 controller with 150 mould programs
Applications
The PHM 250 Ton is commonly used for large flat or deep parts such as crates, stools, battery containers and appliance housings.
Large crates
Dustbins and waste bins
- Image to be provided by client
Plastic stools
- Image to be provided by client
Battery containers
- Image to be provided by client
Appliance housings and panels
Sharps bins and medical containers
- Image to be provided by client
Litter trays and large trays
Other PHM Series Models
Need a Different Tonnage?
Compare the full PHM Series range from 160 to 350 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.
Two Platen 250 Ton Specification Sheet
The full PHM 250 Ton data for both screw options: screw diameter, shot weight, injection pressure and rate, clamping stroke, mould thickness, daylight, tie-bar space, platen size, ejector, pump power, weight and floor space.
Download PDFPDF · 80 KB- Image to be provided by client
Two Platen Injection Moulding Machine Brochure
The PHM Series range from 160 to 350 tons, with screw options, clamping and ejector data, controller features and applications.
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 PHM 250 Ton, before a specification is agreed.
What Is the PHM 250 Ton Two Platen Injection Moulding Machine?
It is a hydro-mechanical two platen injection moulding machine from Pratishna Engineers, built for large crates, dustbins, stools, battery containers and appliance housings.What Can I Manufacture on a 250 Ton Two Platen Machine?
Typical parts include large crates, dustbins and waste bins, plastic stools, battery containers and appliance housings and panels.Why Choose a Two Platen Machine Instead of a Toggle Machine at 250 Tons?
The PHM 250 Ton opens 1150 mm with 1400 mm daylight, so deep parts such as buckets and bins can be released, while the machine stays shorter than a toggle machine of similar tonnage. Clamping force is applied at the tie bars, which keeps large flat moulds closed evenly.What Are the Screw Options on the PHM 250 Ton?
The 250 Ton is available with two screws: the 65 mm screw gives an 836 g shot at up to 1,642 kg/cm² and 325 cc/sec; the 70 mm screw gives a 969 g shot at up to 1,416 kg/cm² and 377 cc/sec. Clamping, ejector and general specifications are common to both.What Mould Size Fits the PHM 250 Ton?
It takes moulds 250 to 700 mm thick within a tie-bar space of 640 × 640 mm, on platens of 1080 × 1128 mm, with a 1150 mm stroke and 200 mm ejector stroke.
Can the Clamping Force or Opening Stroke Be Increased?
Yes. Clamp force and opening stroke can be increased on demand for applications that need more than the standard specification, subject to evaluation of the mould and part.If 250 Ton Is Not the Right Size, What Other Options Are There?
The PHM Series also offers 160 Ton, 200 Ton and 350 Ton models. Smaller parts can move to the H or C Series horizontal machines.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 PHM 250 Ton?
Share your product drawing, material, part weight, mould dimensions and height, cavities, production quantity and cycle time, and Pratishna Engineers will evaluate the configuration and provide a quotation.
Related Blogs, Guides & Articles
Balanced Clamping and Flash Control on Large Flat Parts
Flash control on large flat parts: why trays and lids flash near the clamp limit, how mould size and support balance the clamp, and why more tonnage fails.
Battery Containers and Appliance Housings on a 250 Ton Machine
Sizing a 250 t battery container moulding machine: clamp for PP battery boxes and ABS or PC housings, deep-cell ejection and the Indian rules to know.
Moulding Plastic Stools on a 250 Ton Two Platen Machine
How to size a 250 t plastic stool making machine: seat outline and clamp, barrel for a heavy shot, cooling and cycle, opening for legs and PP grades.
What Can You Make on a 250 Ton Two Platen Machine?
What a 250 ton two platen machine can make: pails, battery containers, stools, housings and baskets, with the clamp check and the limits that apply.
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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