LOG IMM S8 vs. S9 Series: Which Injection Molding Machine Is Right for Your Application?

The Short Answer

Both the LOG IMM S8 and S9 Series are servo-hydraulic injection molding machines. Both use the same energy-saving servo drive technology. Both cover a wide tonnage range from 90 tons up to 650 tons. They are not competing products meant for the same buyer they are complementary machines designed around different production requirements and application profiles.

The S8 Series is LOG IMM’s standard-performance servo machine, built for reliable, efficient production across a broad range of general injection molding applications. The S9 Series is configured for higher-demand applications where precision, speed, rigidity, and output consistency are elevated requirements.

If you are evaluating LOG IMM machines and trying to decide which series fits your operation, the questions that matter are: what parts are you making, what production volume do you need, and what are your precision and quality requirements?

S8 Series: Reliable Servo Performance for General Applications

The S8 Series is LOG IMM’s established servo injection molding machine line, available in nine tonnage configurations from 90 tons to 650 tons. It is designed for the broad range of standard thermoplastic injection molding applications that make up the majority of production in consumer goods, packaging, construction, and general industrial markets.

The S8 is built around the energy-saving servo hydraulic system with components from globally recognized suppliers, including Eckerle gearboxes from Germany, Vickers hydraulics from the USA, KEBA controls from Austria, Phase electrics from Italy, and Yuken hydraulic components from Japan. This component sourcing strategy is a key part of LOG IMM’s approach to quality and reliability.

For facilities that need a capable, energy-efficient injection molding machine for standard applications without the cost premium of the highest-performance configurations, the S8 Series is the starting point.

S9 Series: Higher Performance for Demanding Applications

The S9 Series is configured for applications that require more from the machine in terms of precision, response speed, structural rigidity, or production intensity. It is also available in nine tonnage configurations from 90 tons to 650 tons, covering the same overall range as the S8.

Applications that benefit most from the S9 configuration include thin-wall packaging with fast cycle times, automotive components with tighter dimensional tolerances, medical device parts requiring higher process repeatability, and multi-cavity high-volume production where consistent shot-to-shot performance directly affects output quality and scrap rates.

S8 Series vs. S9 Series: Application Profile Comparison

Tonnage Options Across Both Series

One of the notable aspects of LOG IMM’s lineup is the overlapping tonnage coverage between the S8 and S9. Both series offer 90-ton and 650-ton machines, along with substantial coverage in between. This means buyers selecting between the series are making a choice based on performance configuration and application fit, not on the tonnage they need.

LOG IMM Full Tonnage Range: S8 and S9

Applications Across the LOG IMM Product Line

LOG IMM’s applications pages cover the full breadth of markets where these machines are used. For buyers evaluating a machine purchase, matching the series to your application category is a useful starting point before discussing specific tonnage.

After Sales: The Full Service Picture

Machine selection is only one part of the purchase decision. LOG IMM offers a full after-sales program for both series, including parts supply, field service, operator and technician training, and processing assistance for facilities that need support optimizing existing machine performance. For buyers comparing LOG IMM to other brands on total cost of ownership, the availability and responsiveness of after-sales support is a meaningful factor alongside the machine price.