Website Renewal! Celebrating 122 Years, When it Comes to Dry Vacuum Pumps and Rotary Blowers, Think of Unosawa Ironworks.

Unozawa-gumi Iron Works, Limited

Our company has been delivering excellent products to the world as a specialized manufacturer of vacuum pumps and blowers. In response to the rapidly growing "Sustainable Development Goals (SDGs)" in recent years, we have been developing environmentally friendly dry vacuum pumps (the world's first multi-stage Roots type) for over 40 years, and we have a wealth of delivery records both domestically and internationally. Utilizing the know-how accumulated over many years, we will continue to develop products that meet the needs of the times and propose optimal solutions to fulfill our customers' requests and trust.

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Compact Air-Cooled Dry Vacuum Pump for Clean Processes "KTS Type"
Energy-saving and maintenance-free! Compact air-cooled dry vacuum pump for clean processes.

【Product Lineup】 ○KTS015 →Maximum pumping speed: 280 L/min →Achievable pressure: ≦3 Pa ○KTS030 →Maximum pumping speed: 500 L/min →Achievable pressure: ≦3 Pa ○KTS060 →Maximum pumping speed: 1000 L/min →Achievable pressure: ≦3 Pa ○KTS300 →Maximum pumping speed: 5000 L/min →Achievable pressure: ≦0.5 Pa ●For more details, please contact us or download the catalog.
High pressure and special gas compatible! Mitsuba Rotary Blower "ARJ Type"
Multi-purpose series! Rotary blowers developed based on extensive experience and achievements.

【Materials】 ○Casing and cover: Cast iron (FC250) ○Rotor: Ductile cast iron (FCD450) or cast iron (FC250) ○Shaft: Carbon steel for mechanical structures (S45C) ○Timing gear: Chrome-molybdenum steel (SCM420H) ○“O” ring and oil seal: NBR, etc. ●For more details, please contact us or download the catalog.
Vertical Dry Vacuum Pump for Chemical Processes "TRV Series"
Extremely robust against condensate! Vertical dry vacuum pump for chemical processes.

【Lineup and Specifications】 ○ Vacuum Pump Models: TRV404 / TRV405 / TRV406 / TRV408 / TRV410 ○ Inlet Diameter (mm): 40 / 50 / 65 / 80 / 100 ○ Outlet Diameter (mm): 25 / 32 / 40 / 50 / 65 ○ Maximum Exhaust Rate (m³/min) → For 50Hz: 1.0 / 1.9 / 3.0 / 5.0 / 7.8 → For 60Hz: 1.2 / 2.3 / 3.7 / 6.0 / 9.5 ○ Achievable Pressure (Pa) → For 50Hz: 200 / 110 / 80 / 70 / 60 → For 60Hz: 150 / 95 / 70 / 60 / 50 ○ Motor Power (kW) → For 50Hz: 2.2 / 3.7 / 5.5 / 7.5 / 11 → For 60Hz: 2.2 / 3.7 / 5.5 / 11 / 15 ○ Cooling Water Flow Rate (Lit/min) → For 50Hz: 5 / 7 / 10 / 14 / 20 → For 60Hz: 5 / 7 / 10 / 20 / 28 ● For more details, please contact us or download the catalog.
Dry Vacuum Pump for Chemical Processes "TRM Series"
Ideal for the suction of condensable gases! General-purpose dry vacuum pump for chemical processes.

【Lineup and Specifications】 ○ Vacuum Pump Model (TRM): 0403 / 0503 / 0653 / 0803 / 1003 / 1253 ○ Inlet Diameter (mm): 40 / 50 / 65 / 80 / 100 / 125 ○ Outlet Diameter (mm): 25 / 32 / 40 / 50 / 65 / 80 ○ Maximum Exhaust Rate (m³/min): 2.1 / 3.3 / 5.0 / 7.4 / 14 / 21 ○ Motor (kW): 3.7 / 5.5 / 7.5 / 11 / 22 / 30 ○ Cooling Water Flow Rate (Lit/min): 10 / 15 / 20 / 25 / 35 / 45 ● For more details, please contact us or download the catalog.
Three-Lobe Rotary Blower "ARJ Type"
Wide variety of shaft seals are available!

【Material】 ○Casing and cover: Cast iron (FC250) ○Rotor: Ductile cast iron (FCD450) or cast iron (FC250) ○Shaft: Carbon steel for mechanical structures (S45C) ○Timing gear: Chromium-molybdenum steel (SCM420H) ○“O” ring and oil seal: NBR, etc. ●For more details, please contact us or download the catalog.