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Masuda Seisakusho SQ Square Filter (Suction Filter) – High-Reliability Filtration Solution
- Luis Alberto Fing
- Nov 25, 2025
- 3 min read
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Introduction
The Masuda Seisakusho SQ Square Filter (Suction Filter) is engineered to deliver dependable and efficient filtration performance for hydraulic and lubrication systems. Built with Japanese manufacturing precision, the SQ Series offers robust construction, simplified maintenance, and stable operation—making it a trusted choice for industries requiring reliable suction-side filtration.
SQ Square Filter – Key Features & Technical Advantages
The SQ Square Filter is specifically designed to help engineers and maintenance professionals maintain cleaner fluid systems with minimal downtime. Its structure, filtration efficiency, and user-friendly design contribute to improved equipment performance and longer service life.
Why Engineers Choose the SQ Square Filter
Quick and simple element replacement using a one-touch cover mechanism (H Type).
Full-visibility inside the filter case to check contamination levels easily.
Large filtration area element for efficient suction flow with minimal pressure drop.
Stainless steel construction available, offering excellent durability and corrosion resistance.
Reduced fluid resistance, contributing to stable suction performance.
Lightweight integrated aluminum body, ensuring easy handling and installation.
Safety-focused design, including a bypass valve mechanism.
Stable filtration characteristics, supporting consistent system performance.
SQ Series Structure – Designed for Practical Industrial Use
Compact square design optimizes installation space.
Suitable for a wide range of hydraulic working fluids (depending on model selection).
Elements available in 60–400 μm filtration grades.
Stainless steel elements allow for extended service life when properly maintained.
One-touch or bolt-fixed cover options depending on model structure.
Applications of the SQ Square Filter (Industrial Use)
The SQ Series is suited for applications such as:
Hydraulic power units
Lubrication systems
Industrial machinery
Manufacturing equipment
Oil circulation systems
Its strong suction-side filtering capabilities help protect pumps and extend the life of hydraulic circuits.
Available Models & Specifications
Typical Model Example – F-SQ-08H-150-N
Fluid Type: General oil
Cover Fixing Method: One-touch (H)
Element Grade: 150 μm
Element Material: Normal stainless
Flow Rate: 30 L/min (SQ 04), 80 L/min (SQ 08)
Pressure Characteristics: Up to 7 kPa depending on model
Element Types: Stainless steel mesh and optional reinforced structure
Model Number Code Table
Item | Description | Options |
Fluid Type | Indicates applicable fluid | • (blank): General mineral oil • F: Phosphoric ester oil |
Series Number | SQ series identifier | 08 |
Cover Fixing Method | Type of cover attachment | H: One-touch • B: Bolt type |
Element Grade (µm) | Filtration precision | 100 µm / 60–400 µm |
Element Material | Element construction | Stainless steel mesh |
Replacement Element Code Table
Item | Description | Options |
Series Number | SQ series identifier | 08 |
Element Grade (µm) | Filtration precision | 150 µm / 60–400 µm |
Spare Element Material Code | Element material type | SW: Stainless steel mesh |
Fluid Type | Applicable fluid type | (blank): General mineral oil • F: Phosphoric ester oil |
Replacement Element Code Example – Q08-150SW-F
Element Grade: 150 μm
Element Material: SW Type (Stainless Steel)
Fluid Type: F (Lubrication oil / general oil)
Specifications Table
Series Number | Connection Diameter (Rc Thread) | Flow Rate (L/min) | Pressure Loss (kPa) |
SQ 04 | 1/2 | 36 | 7 |
SQ 06 | 3/4 | 50 | 7 |
SQ 08 | 1 | 80 | 7 |
Boost Equipment Performance with the SQ Square Filter
Choosing the right suction filter is essential for equipment reliability. The Masuda Seisakusho SQ Square Filter provides:
Consistent filtration
Reduced maintenance time
Higher operational safety
Long-term cost efficiency
Engineers seeking a dependable filtration solution will find the SQ Series to be a strong fit for demanding industrial environments.
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