Tsurumi KRS Series Submersible Pump

The Tsurumi KRS Series Submersible Pump is designed for large-scale industrial projects where high-volume water transfer and abrasive solids handling are required simultaneously.

Driven by slow-speed 4-pole motors, the KRS range reduces internal impeller wear and mechanical stress compared to standard 2-pole pumps. Combined with a robust cast iron body, high-grade 420 stainless steel shaft, and high-chromium iron impellers, these pumps excel at moving water loaded with sand, gravel, and heavy slurry from deep excavations and quarries.

Key Features & Benefits

• Low-Speed 4-Pole Motor: Operates at lower RPMs (1450 rpm) to dramatically reduce abrasive wear on internal components and prolong service life.
• 420 Stainless Steel Shaft: Built with a high-strength 420 stainless steel shaft for exceptional torsional rigidity and resistance against mechanical fatigue under heavy solids loading.
• Heavy Duty Cable Specs: All models come standard with 20 metres of H07RN-F rubber power cable. Optional Individually Screened Cable (IDS) is available upon request for strict quarrying and mining electrical safety standards.
• Heavy Cast Iron Casing: Rugged grey iron construction absorbs structural impacts and provides superior durability on heavy civil engineering sites.
• High-Chromium Impellers: Outstanding resistance to erosion caused by sand, quartz, and heavy bentonite slurry.
• Top-Discharge Flow-Through Cooling: Pumped liquid flows around the motor housing, ensuring reliable continuous cooling even at low water levels.
• Patented Oil Lifter: Keeps double mechanical seals continuously lubricated, preventing dry-run damage and costly downtime.
• Anti-Wicking Cable Entry: Prevents capillary water ingress into the motor frame if the power cable is cut or damaged on site.

Applications

• High-capacity site dewatering for deep foundations, dams, and cofferdams
• Quarrying, sand washing, and gravel pit drainage (IDS cable option available)
• Pumping heavy bentonite, slurry, and drilling mud
• Emergency flood relief and large-scale bypass pumping

Note: The Tsurumi KRS series operates on 400V three-phase power. Standard models include 20m H07RN-F cable. If your site requires IDS (individually screened) cable or specific discharge hose ratings, please contact our technical sales team prior to ordering.

Key Details

Maximum Head: 34 m
Maximum Flow: 12,000 litres/min
100 mm, 150 mm or 200 mm outlet
Manual operation
400 V 3 phase