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China SK-780U 780Ton Two-Platen Injection Molding Machine from Trusted Suppliers and Factory
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China SK-780U 780Ton Two-Platen Injection Molding Machine from Trusted Suppliers and Factory

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Model No.: SK-780U

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Application: Ideal for Manufacturing Various Plastic Products
Delivery Terms Offered: FOB, CFR, CIF, EXW, CIP
Payment Methods Accepted: T/T, L/C, Western Union, MoneyGram
Available Payment Currencies: USD, USTD, CNY, EUR, AUD, CAD, CHF, DKK, GBP, HKD, JPY, NOK, NZD, SEK, SGD, AED, IDR, NGN, BRL, MXN, MYR, PHP, ZAR, and more.

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As a reliable China factory and trusted suppliers, we specialize in producing high-quality plastic products tailored to meet your needs. Our commitment to excellence ensures that you receive the best products delivered on time.

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  • Suitable Material PP, PS, PE, ABS
  • Clamping force (KN) 7800 KN
  • Theoretical Shot Volume(cm³) 2977-3636 cm³
  • Theoretical Injection weight (PET) 2709-3309 g
  • Tie-bar Distance 1070×940 mm
  • Open stroke(mm) 1700/1000 mm
  • Voltage 3 Phases 380V / 440V(Optional) / 220V(optional), 50HZ/60HZ

Product Introduction

The Strategic Bridge: Elevating Mid-Range to Large-Scale Production

Engineered to seamlessly bridge the gap between mid-range and large-scale manufacturing, the SUCCESSOR SK-780U Two-Platen Injection Molding Machine takes the core strengths of the SK-U series and elevates them with enhanced rigidity and unparalleled operational flexibility. This machine is designed for producers who are scaling up and require a solution that can handle larger volumes without compromising on the precision and reliability that define the series. Its high-rigidity clamping unit, perfectly paired with advanced precision guidance systems, ensures stable platen movement with a guaranteed accuracy of ±0.05mm. This level of precision is critical for achieving consistent part quality, especially when running complex or large-format production runs where tight tolerances are non-negotiable.


To maximize yield and minimize errors, the SK-780U is equipped with a three-rod, single-cylinder braking system. This configuration guarantees precise synchronization across all mold operations, from opening to closing and ejection, eliminating timing errors and significantly boosting product yield. Performance is further enhanced by an instantaneous response system, coupled with high-response dual proportional valves, which deliver rapid, reliable performance and rock-solid control over the entire process. The machine's thoughtful design extends to its adaptability; the independent high-pressure cylinder allows for easy tie-bar extraction, seamlessly adapting to low-headroom workshops and maximizing space utilization. Durability is a cornerstone, achieved through uniform-stress guide posts that are specially treated for superior wear and corrosion resistance, ensuring over 99% force uniformity to prevent eccentric loading and maximize the machine's service life. The reinforced platen provides exceptional mold-closing stability, while the extended stroke accommodates deep-cavity molds, offering a more cost-effective alternative to bulkier three-plate machines. The streamlined architecture simplifies maintenance, particularly for the movable platen and brake components, and its automated parameter setup enables quick and efficient mold changes, dramatically improving operational efficiency. Ideal for automotive interior parts, large packaging containers, and critical industrial components, the SK-780U is a versatile and robust solution, combining precision, durability, and energy efficiency for high-demand mid-to-large volume production.

Core Engineering Highlights

01
Shock-Free Synchronous Braking

A buffered mechanism ensures rapid, reliable clamping with zero impact.

02
Independent High-Pressure Cylinder

Facilitates controlled, slow high-pressure opening and enables easy tie-bar extraction for low-headroom facilities.

03
High-Rigidity Precision Guidance

An L-shaped rail on a robust frame guarantees ±0.05mm accuracy, ensuring rapid and stable platen movement.

04
Durable Guide Posts with Uniform Stress

Specially treated for rigidity and wear/corrosion resistance, these posts achieve over 99% force uniformity to prevent eccentric loading and maximize service life.

SK-2800U 2800Ton Two-Platen Injection Molding Machine
Exceptional Precision in Mold Opening Position
01
Exceptional Precision in Mold Opening Position

Achieves a repeatable mold opening accuracy of ±0.2mm—a fivefold improvement over standard three-plate machines. (Verified by internal 1200-ton testing).

Ultra-Sensitive Mold Protection
02
Ultra-Sensitive Mold Protection

SK-U series machines' intelligent deceleration control provides unparalleled sensitivity, achieving the "A4 paper rebound" standard. It can stop on the slightest obstruction, ensuring your valuable molds are protected with maximum reliability.

High-Speed Performance, Lower Cycle Times
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High-Speed Performance, Lower Cycle Times

Experience significantly faster dry cycles. Our optimized system delivers rapid mold opening and clamping, translating directly into enhanced productivity and greater output. (Verified by 1200-ton internal testing).

Partial Product

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Machine Specifications

MODEL

SK-780U

Description

Item

Unit

A

B

C

INJECTION UNIT

Screw Diameter

MM

95

100

105

Screw L/D Ratio

L/D

21.2

20.1

19.1

Shot Size (Theoretical)

CM³

2977

3300

3636

Injection Weight (PS)

G

2709

3003

3309

Injection Rate

G/S

562

623

686

Plasticizing Capacity

G/S

72

85

95

Injection Pressure

MPA

158

143

130

Screw Speed

RPM

0 - 130

CLAMPING UNIT

Clamp Tonnage

KN

7800

Space Between Tie Bars

MM

1070×940

Opening Stroke

MM

1700/1000

Max. Mold Height

MM

1100

Min. Mold Height

MM

400

Max. Daylight

MM

2100

Ejector Stroke

MM

300

Ejector Tonnage

KN

150

Ejector Number

PCS

17

OTHERS

Max. Pump Pressure

MPA

17.5/21

Pump Motor Power

KW

48+48+13

Heater Power

KW

46.45

Machine Dimension (LxWxH)

M

8.5×2.7×2.5

Machine Weight

T

30

Oil Tank Capacity

L

1000

Certifications

Certifications (1)
Certifications (2)
Certifications (3)
Certifications (5)
Certifications (6)
Certifications (7)
Certifications (8)
Certifications (9)
Certifications (10)

Company Exhibition

Certifications (1)
Certifications (2)
Certifications (4)
Company Exhibition
Certifications (5)
Certifications (3)

Clients Plants Site

Fruit Crates Making Machine in Xinjiang
Client Plant Site
Client Plant Site
Client Plant Site
Client Plant Site
Client Plant Site
Clients Plants Site
Clients Plants Site
Clients Plants Site

Packaging & Shipping

Two-Platen Injection Molding Machine (1)
Two-Platen Injection Molding Machine (2)
Two-Platen Injection Molding Machine (3)
Two-Platen Injection Molding Machine (4)
Two-Platen Injection Molding Machine (5)
Two-Platen Injection Molding Machine

Frequently Asked Questions

Q What is the clamping force of the SK-780U Two-Platen Injection Molding Machine?

The SK-780U delivers a clamping force of 7800 KN (780 tons), making it well-suited for mid-to-large scale production of automotive interior parts, large packaging containers, and industrial components.

Q What platen movement accuracy does the SK-780U guarantee?

The SK-780U features a high-rigidity clamping unit with an L-shaped precision guidance rail, guaranteeing stable platen movement with an accuracy of ±0.05mm. Its mold opening position repeatability reaches ±0.2mm — five times better than standard three-plate machines.

Q Is the SK-780U suitable for low-headroom workshop environments?

Yes. The SK-780U is equipped with an independent high-pressure cylinder that enables easy tie-bar extraction, allowing the machine to adapt seamlessly to low-headroom facilities and maximizing space utilization without compromising performance.

Q How does the SK-780U protect molds during operation?

The SK-U series incorporates intelligent deceleration control with ultra-sensitive mold protection, achieving the "A4 paper rebound" standard. The system can detect and stop on the slightest obstruction, ensuring maximum protection for valuable molds and preventing costly damage.

Q What are the main injection unit specifications for the SK-780U?

The SK-780U offers three screw configurations (95mm, 100mm, 105mm diameter). The theoretical shot size ranges from 2977 to 3636 cm³, injection weight (PS) from 2709 to 3309 g, injection rate from 562 to 686 g/s, and injection pressure from 130 to 158 MPa. Screw speed is adjustable from 0 to 130 RPM.

Q What industries and applications is the SK-780U best suited for?

The SK-780U is ideal for automotive interior parts, large packaging containers, and critical industrial components. Its combination of high clamping force, precision guidance, extended stroke for deep-cavity molds, and energy-efficient design makes it a versatile solution for high-demand mid-to-large volume production environments.