Tsurumi KTZE43.7-61 Submersible Pump
Spare Parts for KTZE / 3.7kW 415v 50Hz
Product Summary
The KTZE43.7-61 is a robust 3.7kW three-phase submersible dewatering pump designed for severe-duty applications in construction, mining, and aggregate industries. Featuring an integrated electrode sensor, it operates automatically without floats to prevent dry-running and reduce power consumption. Its high-chrome semi-open impeller and heavy-duty cast iron construction ensure durability against abrasive media and solids up to 8.5mm.
- Automatic Electrode System: Integrated level sensor eliminates dry-running and reduces power consumption by up to 40%.
- High-Chrome Impeller: Semi-open design made from high-chromium cast iron resists wear from abrasive sand and debris.
- Multi-Directional Discharge: Discharge connection can be reconfigured for vertical or horizontal outlet without extra parts.
- Tsurumi Oil Lifter: Patented guide vane inside the oil chamber ensures mechanical seal lubrication even at low oil levels.
- Heavy-Duty Motor: Air-filled, 2-pole motor with Class F insulation and built-in thermal protection.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | 025-000-02 | Mechanical Seal Set | Silicon Carbide (H-25T) | |
| 1 | 021-563-30 | Impeller (KTZE43.7) | High Chrome Cast Iron | |
| 1 | 173-000-75 | Packing / O-Ring Set | NBR / Rubber | |
| 1 | 022-000-11 | Suction Cover | Ductile Cast Iron | |
| 1 | 030-000-34 | Oil Lifter | PBT Resin | |
| 1 | 052-000-04 | Upper Bearing | #6304ZZC3 | |
| 1 | 052-000-07 | Lower Bearing | #6307ZZC3 | |
| 1 | 090-112-16 | Level Sensor (Electrode) | Stainless/Rubber | |
| 1 | 114-000-86 | Relay Unit (208/230V) | Electronic | |
| 1 | 001-840-32 | Power Cable | Chloroprene Sheath | |
| 1 | 023-000-22 | Suction Strainer | Steel | |
| 1 | 068-000-36 | Handle | Steel / Rubber |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | KTZE43.7-61 |
| Rated Power | 3.7 kW (5 HP) |
| Voltage / Frequency | 208-230/460/575 V / 60 Hz |
| Rated Current | 13.8 / 6.8 / 5.3 A |
| Discharge Connection | 4" (100mm) NPT |
| Impeller Type | Semi-Open High Chrome Iron |
| Installation Type | Submersible / Automatic (Electrode) |
Troubleshooting, Common Faults & Solutions
Pump fails to start
Likely Cause: No power supply or cut cable.
Action / Part: Check power source and inspect Power Cable (Part 001) for damage.
Pump stops shortly after starting
Likely Cause: Motor protector tripped due to overload or blockage.
Action / Part: Remove debris from Impeller (Part 021) or Strainer (Part 023). Check voltage.
Pump runs but flow is low
Likely Cause: Worn impeller, clogged strainer, or wrong rotation.
Action / Part: Inspect/Replace Impeller (Part 021) or Clean Suction Strainer (Part 023).
High vibration or noise
Likely Cause: Worn bearings or debris stuck in casing.
Action / Part: Replace Upper/Lower Bearings (Part 052A/052B).
Auto-stop failure (KTZE only)
Likely Cause: Electrode sensor dirty or coated.
Action / Part: Clean the Level Sensor (Part 090) surface.
Online Resources
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