Tsurumi KRS1022-61 Submersible Pump
Spare Parts for KRS1022-61 / 22.0kW 415v 50Hz
Product Summary
The KRS1022-61 is a massive 10-inch (250mm) submersible dewatering pump powered by a heavy-duty 22kW 4-pole motor. Engineered for high-volume water transfer in flood control, river bypass, and large-scale construction dewatering, it combines a slow-speed motor with a rugged cast iron chassis for exceptional durability. Its top-discharge design provides superior motor cooling efficiency, allowing extended operation at low water levels without overheating.
- 4-Pole Induction Motor: Low-speed operation (1800 RPM) significantly reduces wear on the impeller and bearings compared to 2-pole alternatives.
- High-Volume Capacity: Capable of moving massive volumes of water, making it ideal for emergency flood relief and large civil projects.
- Rugged Cast Iron Construction: The pump casing, motor frame, and suction cover are made of high-quality gray iron to withstand impact and corrosion.
- Dual Silicon Carbide Seals: Isolated in an oil chamber to prevent water ingress, ensuring long-term motor protection.
- Top Discharge with Flow-Through Cooling: Pumped water cools the motor housing, permitting continuous operation even when the pump is not fully submerged.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | 025-000-64 | Mechanical Seal Set (H-50) | Silicon Carbide | |
| 1 | 021-001-57 | Impeller (KRS1022) | Ductile Cast Iron | |
| 1 | 022-000-67 | Suction Plate | Gray Cast Iron | |
| 1 | 173-001-08 | O-Ring / Gasket Set | NBR / Rubber | |
| 1 | 030-000-51 | Oil Lifter | PBT Resin | |
| 1 | 052-000-13 | Upper Bearing | #6309ZZC3 | |
| 1 | 052-000-15 | Lower Bearing | #6311ZZC3 | |
| 1 | 026-000-17 | Oil Seal | NBR Rubber | |
| 1 | 001-000-64 | Power Cable | Chloroprene Sheath | |
| 1 | 023-000-54 | Strainer Stand | Steel | |
| 1 | 020-000-48 | Pump Casing | Gray Cast Iron | |
| 1 | 032-001-19 | Hose Coupling (10") | Cast Iron | |
| 1 | 054-000-45 | Shaft | Stainless Steel 420 | |
| 4 | 140-000-09 | Hex Bolt (Casing) | Stainless Steel 304 | |
| 1 | 050-000-40 | Motor Bracket | Gray Cast Iron |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | KRS1022-61 |
| Rated Power | 22 kW (30 HP) |
| Voltage / Frequency | 460 / 575 V / 60 Hz |
| Rated Current | 36 A (460V) / 29 A (575V) |
| Discharge Connection | 10" (250mm) Hose Coupling |
| Impeller Type | Open Type / Ductile Iron |
| Installation Type | Submersible / Free Standing |
Troubleshooting, Common Faults & Solutions
Pump does not start
Likely Cause: No power or cable damage.
Action / Part: Check power supply and continuity of Power Cable (Part 001).
Motor trips on overload
Likely Cause: Blocked impeller causing high amp draw.
Action / Part: Inspect Impeller (Part 021) and clear debris.
Low flow rate
Likely Cause: Incorrect rotation (Reverse Phase) or worn impeller.
Action / Part: Swap two power leads or replace Impeller (Part 021).
Water in oil chamber
Likely Cause: Worn mechanical seal faces.
Action / Part: Replace Mechanical Seal Set (Part 025).
Abnormal noise or vibration
Likely Cause: Bearing failure.
Action / Part: Replace Upper/Lower Bearings (Parts 052).
Online Resources
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