Tsurumi KTZ Series Submersible Dewatering Pumps
Spare Parts for Tsurumi KTZ Dewatering Pumps, KTZ21.5 to KTZ622
Product Summary
Genuine OEM spare parts for the Tsurumi KTZ series, the cast-iron, high-chrome-impeller submersible dewatering pump used across construction, mining and quarry sites. Mechanical seals, impellers, suction covers, packing sets, bearings and motor protectors for all 17 models from KTZ21.5 to KTZ622 are listed below with their Tsurumi part numbers.
Spare Parts List
✓ Tick the parts you need. Codes are as printed in the Tsurumi parts lists and many are model-specific, so pick your model in the form below. Not sure which model you have? Add a photo of the nameplate and we’ll match the parts for you.
| Select | Part (as printed by Tsurumi) | Part number & fits |
|---|---|---|
| Common Service Kits | ||
| Packing & O-Ring Set | Part no. 173-003-31 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52 | |
| Packing & O-Ring Set | Part no. 173-003-33 · Fits KTZ23.7-54, KTZ33.7-54, KTZ43.7-54 | |
| Packing & O-Ring Set | Part no. 173-003-41 · Fits KTZ35.5-53, KTZ45.5-53 | |
| Packing & O-Ring Set | Part no. 173-003-42 · Fits KTZ47.5-53, KTZ67.5-53 | |
| Packing & O-Ring Set | Part no. 173-000-86 · Fits KTZ411-53, KTZ415-51, KTZ611-53, KTZ615-51 | |
| Packing & O-Ring Set | Part no. 173-004-04 · Fits KTZ422-51, KTZ622-51 | |
| Mechanical Seal H-20T SiC | Part no. 025-000-99 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52 | |
| Mechanical Seal H-25T SiC | Part no. 025-001-00 · Fits KTZ23.7-54, KTZ33.7-54, KTZ35.5-53, KTZ43.7-54, KTZ45.5-53 | |
| Mechanical Seal H-30T(T) SIC | Part no. 025-001-02 · Fits KTZ47.5-53, KTZ67.5-53, KTZ411-53, KTZ415-51, KTZ611-53, KTZ615-51 | |
| Mechanical Seal H-35T SiC | Part no. 025-257-14 · Fits KTZ422-51, KTZ622-51 | |
| Oil Seal TC-25388 NBR | Part no. 026-105-19 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52 | |
| Oil Seal TC-40588 NBR | Part no. 026-144-49 · Fits KTZ23.7-54, KTZ33.7-54, KTZ35.5-53, KTZ43.7-54, KTZ45.5-53 | |
| Oil Seal SC-50689 NBR | Part no. 026-272-18 · Fits KTZ422-51, KTZ622-51 | |
| Oil Lifter H-20(A)(T) Resin | Part no. 030-144-13 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52 | |
| Oil Lifter H-25(A)(T) Resin | Part no. 030-143-12 · Fits KTZ23.7-54, KTZ33.7-54, KTZ35.5-53, KTZ43.7-54, KTZ45.5-53 | |
| Oil Lifter H-30(A)(T) Resin | Part no. 030-142-11 · Fits KTZ47.5-53, KTZ67.5-53, KTZ411-53, KTZ415-51, KTZ611-53, KTZ615-51 | |
| Oil Lifter H-35(A)(T) Resin | Part no. 030-156-18 · Fits KTZ422-51, KTZ622-51 | |
| Wear & Consumable Parts | ||
| Impeller (50HZ) 15H/50Hz high-chrome cast iron | Part no. 021-554-12 · Fits KTZ21.5-52 | |
| Impeller (15L) 15L high-chrome cast iron | Part no. 021-552-23 · Fits KTZ31.5-52 | |
| Impeller (50HZ) 22L/50Hz high-chrome cast iron | Part no. 021-556-27 · Fits KTZ32.2-52 | |
| Impeller (50Hz) high-chrome cast iron | Part no. 021-009-10 · Fits KTZ35.5-53 | |
| Impeller (50HZ) 37L/50Hz high-chrome cast iron | Part no. 021-562-26 · Fits KTZ43.7-54 | |
| Impeller (50Hz) high-chrome cast iron | Part no. 021-565-29 · Fits KTZ45.5-53 | |
| Impeller (50HZ) KTZ47.5-51 high-chrome cast iron | Part no. 021-000-47 · Fits KTZ47.5-53 | |
| Impeller (50Hz) KTZ422-51 high-chrome cast iron | Part no. 021-009-89 · Fits KTZ415-51 | |
| Impeller (50Hz) KTZ422-51 high-chrome cast iron | Part no. 021-012-26 · Fits KTZ422-51 | |
| Impeller (50Hz) KTZ622-51 high-chrome cast iron | Part no. 021-009-91 · Fits KTZ615-51 | |
| Impeller (50Hz) KTZ622-51 high-chrome cast iron | Part no. 021-012-28 · Fits KTZ622-51 | |
| Suction Cover KTZ21.5/22.5 (FCD) | Part no. 022-000-52 · Fits KTZ21.5-52, KTZ22.2-52 | |
| Suction Cover KTZ23.7-52 (FCD) | Part no. 022-000-54 · Fits KTZ23.7-54 | |
| Suction Cover KTZ31.5/32.2 (FCD) | Part no. 022-000-53 · Fits KTZ31.5-52, KTZ32.2-52 | |
| Suction Cover KTZ33.7 (FCD) | Part no. 022-000-55 · Fits KTZ33.7-54, KTZ35.5-53 | |
| Suction Cover KTZ43.7 (FCD) | Part no. 022-000-56 · Fits KTZ43.7-54, KTZ45.5-53 | |
| Suction Cover KTZ47.5/411 FCD | Part no. 022-000-58 · Fits KTZ47.5-53, KTZ411-53 | |
| Suction Cover KTZ67.5/611 (FCD) | Part no. 022-000-57 · Fits KTZ67.5-53, KTZ611-53, KTZ615-51 | |
| Suction Cover for KTZ422-51/61 FCD | Part no. 022-001-93 · Fits KTZ415-51 | |
| Suction Cover KTZ422 FCD | Part no. 022-002-28 · Fits KTZ422-51 | |
| Suction Cover KTZ622 FCD | Part no. 022-002-29 · Fits KTZ622-51 | |
| Strainer Stand KTZ21.5/32.2 SPCC | Part no. 023-472-11 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52 | |
| Strainer Stand KTZ23.7/45.5 SPCC | Part no. 023-471-10 · Fits KTZ23.7-54, KTZ33.7-54, KTZ35.5-53, KTZ43.7-54, KTZ45.5-53 | |
| Strainer KTZ47.5/411(d12) SPCC | Part no. 023-489-11 · Fits KTZ47.5-53, KTZ411-53, KTZ415-51 | |
| Strainer KTV-75/110 SPC | Part no. 023-252-13 · Fits KTZ67.5-53, KTZ611-53, KTZ615-51 | |
| Strainer KTZ422d8.5 SS | Part no. 023-002-25 · Fits KTZ422-51 | |
| Strainer KTZ622d12 SS | Part no. 023-002-26 · Fits KTZ622-51 | |
| Cabtyre Cable Set (20m)380/400/415V-50Hz(EUR,NSU) NSSHOUMulti-core7Cx10mm2 KR- | Part no. 001-011-17 · Fits KTZ422-51, KTZ622-51 | |
| Other Core Parts | ||
| Bearing 6305ZZC3 | Part no. 052-108-13 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52, KTZ35.5-53, KTZ45.5-53, KTZ47.5-53, KTZ67.5-53 | |
| Bearing (w/O-ring) AC-6204ZZC3 | Part no. 052-187-16 · Fits KTZ21.5-52, KTZ22.2-52, KTZ31.5-52, KTZ32.2-52 | |
| Bearing 6304ZZC3 | Part no. 052-107-12 · Fits KTZ23.7-54, KTZ33.7-54, KTZ43.7-54 | |
| Bearing 6307ZZC3 | Part no. 052-110-18 · Fits KTZ23.7-54, KTZ33.7-54, KTZ43.7-54 | |
| Bearing 6308ZZC3 | Part no. 052-001-07 · Fits KTZ35.5-53, KTZ45.5-53 | |
| Bearing 6309ZZC3 | Part no. 052-001-08 · Fits KTZ47.5-53, KTZ67.5-53, KTZ411-53, KTZ611-53 | |
| Bearing 6306ZZC3 | Part no. 052-109-14 · Fits KTZ411-53, KTZ415-51, KTZ611-53, KTZ615-51 | |
| Bearing 6309ZZD2C3 | Part no. 052-140-17 · Fits KTZ415-51, KTZ615-51 | |
| Bearing 6307ZZC3 | Part no. 052-110-21 · Fits KTZ422-51, KTZ622-51 | |
| Bearing 7311ADBC3 | Part no. 052-120-11 · Fits KTZ422-51, KTZ622-51 | |
| Motor Protector 380V-50Hz(CHN) KA313-GDVL103 (T.C) | Part no. 053-000-02 · Fits KTZ21.5-52, KTZ23.7-54, KTZ32.2-52, KTZ33.7-54, KTZ43.7-54 | |
| Motor Protector 200-210V-50HZ 200-230V-60HZ KA313-GQVJ101 (T.C) | Part no. 053-270-23 · Fits KTZ21.5-52 | |
| Motor Protector 380-420V-50HZ 380-460V-60HZ KA311-DPWJ78 (T.C) | Part no. 053-471-13 · Fits KTZ21.5-52, KTZ31.5-52 | |
| Motor Protector (380/415-50) KA313-GQXL104 (T.C) | Part no. 053-477-19 · Fits KTZ22.2-52 | |
| Motor Protector 380-420V-50HZ 380-460V-60HZ KA314-HMXL00 (B.C) | Part no. 053-506-18 · Fits KTZ35.5-53, KTZ45.5-53 | |
| Motor Protector 380-420V-50HZ 380-460V-60HZ KA314-HKBL00 (B.C) | Part no. 053-000-16 · Fits KTZ47.5-53, KTZ67.5-53 | |
| Motor Protector 380-420V-50HZ 380-460V-60HZ KA315-JKZL00 (B.C) | Part no. 053-000-24 · Fits KTZ411-53, KTZ611-53 | |
| Motor Protector 220/230/240V-50Hz(EUR) 1 KA143-CCTL402 (H.C) | Part no. 053-002-22 · Fits KTZ415-51, KTZ615-51 | |
| Oil Casing KTZ47.5/611 FC | Part no. 029-333-17 · Fits KTZ47.5-53, KTZ67.5-53, KTZ411-53, KTZ415-51, KTZ611-53, KTZ615-51 | |
| Oil Casing KTZ422/622 FC200 (EN-GJL-200) | Part no. 029-001-37 · Fits KTZ422-51, KTZ622-51 | |
How we confirm the exact part: Part numbers on this page are as printed in the Tsurumi (Europe) parts lists for 50 Hz models, and service guidance is from the Tsurumi operation manual (B-10220-2). Voltage versions of some parts (for example motor protectors) differ, so send the nameplate details or a photo and we’ll confirm the right part before we quote.
Service Intervals & When to Replace
- Mechanical seal: check the oil every 6 months or 3,000 hours. If it is milky or has water in it, the mechanical seal is letting water in and needs replacing.
- Oil: change it every 12 months or 6,000 hours with turbine oil VG32 (non-additive), to the volume in the table above.
- Packing & O-rings: fit a new set every time the pump is opened or inspected.
- Impeller & suction cover: a clear drop in head or flow usually means a worn impeller or a blocked strainer. Worn impellers have sharp edges, so handle with gloves, and check the impeller turns freely without rubbing after refitting.
- Overhaul: Tsurumi recommends a full overhaul every 2 to 5 years, even if the pump seems fine.
- Oil seal (1.5 to 5.5 kW): replace when the lip is worn and every time the pump is opened. Labyrinth ring and shaft sleeve: replace when worn.
Models
One page covers the whole KTZ range. The model code shows discharge and power: KTZ45.5 is a 100 mm (4") outlet at 5.5 kW, and the -5x suffix marks 50 Hz versions (-6x is 60 Hz). The model is on the pump nameplate.
Models & Key Specifications
| Model | Discharge | Output | Max head (50 Hz) | Max capacity (50 Hz) | Weight | Oil (VG32) |
|---|---|---|---|---|---|---|
| KTZ21.5-52 | 50 mm | 1.5 kW | 21.5 m | 0.43 m³/min | 34 kg | 740 mL |
| KTZ22.2-52 | 50 mm | 2.2 kW | 26.0 m | 0.50 m³/min | 35 kg | 740 mL |
| KTZ23.7-54 | 50 mm | 3.7 kW | 36.5 m | 0.45 m³/min | 60 kg | 1,250 mL |
| KTZ31.5-52 | 80 mm | 1.5 kW | 14.4 m | 0.67 m³/min | 33 kg | 740 mL |
| KTZ32.2-52 | 80 mm | 2.2 kW | 20.4 m | 0.80 m³/min | 34 kg | 740 mL |
| KTZ33.7-54 | 80 mm | 3.7 kW | 29.0 m | 0.90 m³/min | 60 kg | 1,250 mL |
| KTZ35.5-53 | 80 mm | 5.5 kW | 32.0 m | 1.10 m³/min | 74 kg | 1,100 mL |
| KTZ43.7-54 | 100 mm | 3.7 kW | 18.0 m | 1.44 m³/min | 60 kg | 1,250 mL |
| KTZ45.5-53 | 100 mm | 5.5 kW | 22.5 m | 1.74 m³/min | 74 kg | 1,100 mL |
| KTZ47.5-53 | 100 mm | 7.5 kW | 40.0 m | 1.40 m³/min | 101 kg | 760 mL |
| KTZ67.5-53 | 150 mm | 7.5 kW | 31.0 m | 2.03 m³/min | 100 kg | 760 mL |
| KTZ411-53 | 100 mm | 11 kW | 48.5 m | 1.44 m³/min | 133 kg | 760 mL |
| KTZ415-51 | 100 mm | 15 kW | 55 m | 1.98 m³/min | 146 kg | 820 mL |
| KTZ422-51 | 100 mm | 22 kW | 71 m | 2.75 m³/min | 295 kg | 2,000 mL |
| KTZ611-53 | 150 mm | 11 kW | 32.5 m | 2.44 m³/min | 133 kg | 760 mL |
| KTZ615-51 | 150 mm | 15 kW | 39.5 m | 2.8 m³/min | 147 kg | 820 mL |
| KTZ622-51 | 150 mm | 22 kW | 55 m | 4.0 m³/min | 296 kg | 2,000 mL |
Figures from the Tsurumi KTZ/KTZE operation manual (B-10220-2), 50 Hz values. All models are 3-phase, 2-pole, direct-on-line, with a double mechanical seal in an oil chamber. Maximum allowable water pressure 0.5 MPa.
Troubleshooting
Pump fails to start
Likely cause: No power supplied (power outage); Open circuit or poor connection of cabtyre cable; Impeller obstructed; Obstructed conductivity (electrode); Short circuit between electrode and body by fouling object; Affected by nearby electric apparatus. Action: Contact power company or electrical repair shop; Check cabtyre cable/wiring for open circuit; Inspect pump and remove obstruction; Clean the electrode; Remove the object causing the short circuit; Relocate if found to be the cause.
Pump starts but stops immediately, motor protector actuates
Likely cause: Impeller obstructed; Voltage drop; 50 Hz model operated at 60 Hz; Strainer obstructed and pump run dry for long hours; Motor abnormal; Pump picking up too much sediment. Action: Inspect pump and remove obstruction; Correct to rated voltage or use extension cable meeting the standard; Check nameplate and replace the pump; Remove the obstruction; Repair motor or replace with new motor; Place a concrete block under the pump.
Pump head and pumping volume lower
Likely cause: Impeller worn; Hose kinked or clogged; Strainer obstructed or buried; Motor rotating in reverse. Action: Replace; Minimise hose bends (in heavy debris use the pump in a meshed basket); Remove obstruction; place a concrete block under the pump; Interchange power supply terminal connections.
Pump generates noise or vibration
Likely cause: Motor bearing may be damaged. Action: Contact dealer or Tsurumi sales office to replace the bearing.
Request for Quotation
Selected Parts:
- No parts selected
Not sure which parts? Just send a photo of the nameplate or part below.