Tsurumi KTZ45.5-63 Submersible Pump
Spare Parts for KTZ / 5.5kW 415v 50Hz
Product Summary
The KTZ45.5-63 is a high-performance 5.5kW (7.5HP) three-phase submersible drainage pump designed for high-head applications in construction, mining, and tunneling. Built with a rugged cast iron body and a high-chrome semi-open impeller, it efficiently handles abrasive groundwater and sand-laden media. Its top-discharge design ensures effective motor cooling even when operating at low water levels.
- High-Head Performance: Engineered for deep excavation dewatering with a maximum head capacity suited for quarries and mines.
- Tsurumi Oil Lifter: Patented guide vane lubricates the mechanical seal faces even if the oil level drops, extending seal life by up to 10x.
- Anti-Wicking Cable Entry: Prevents water ingress into the motor chamber due to capillary action if the power cable sheath is damaged.
- Abrasion Resistant: Features a high-chromium cast iron impeller and a ductile iron suction cover to withstand severe wear.
- Multi-Directional Discharge: The 4-inch discharge coupling can be rotated 90 degrees for flexible hose routing.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | 025-000-03 | Mechanical Seal Set (H-30T) | Silicon Carbide | |
| 1 | 021-564-21 | Impeller (50/60Hz) | High Chrome Cast Iron | |
| 1 | 026-000-02 | Oil Seal | NBR Rubber | |
| 1 | 030-000-34 | Oil Lifter | PBT Resin | |
| 1 | 022-564-12 | Suction Cover | Ductile Cast Iron | |
| 1 | 173-000-04 | O-Ring / Gasket Set | NBR / Rubber | |
| 1 | 052-000-05 | Upper Bearing | #6305ZZC3 | |
| 1 | 052-000-08 | Lower Bearing | #6308ZZC3 | |
| 1 | 001-000-79 | Power Cable | Chloroprene Sheath | |
| 1 | 023-000-22 | Suction Strainer | Steel | |
| 1 | 032-000-76 | Discharge Connection | Cast Iron / 4" NPT | |
| 1 | 054-000-34 | Motor Shaft | Stainless Steel 420 | |
| 1 | 142-000-02 | Impeller Washer | Stainless Steel 304 |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | KTZ45.5-63 |
| Rated Power | 5.5 kW (7.5 HP) |
| Voltage / Frequency | 208-230/460 V / 60 Hz |
| Rated Current | 20.6 / 10.3 A (Approx) |
| Discharge Connection | 4" (100mm) NPT |
| Impeller Type | Semi-Open High Chrome Iron |
| Installation Type | Submersible / Manual |
Troubleshooting, Common Faults & Solutions
Pump does not start
Likely Cause: Power cable damage or open phase.
Action / Part: Inspect Cable (Part 001). Check panel voltage.
Motor protector trips immediately
Likely Cause: Impeller locked by debris or voltage drop.
Action / Part: Clear Suction Strainer (Part 023) or replace Impeller (Part 021).
Reduced flow or head
Likely Cause: Worn impeller or wrong rotation (reverse phase).
Action / Part: Swap two power leads or replace Impeller (Part 021).
Water in Oil Chamber
Likely Cause: Mechanical seal failure.
Action / Part: Replace Mechanical Seal Set (Part 025).
Excessive noise/vibration
Likely Cause: Bearing wear or bent shaft.
Action / Part: Replace Bearings (Parts 052) and check Shaft (Part 054).
Online Resources
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