Skip to content 
KBZ Submersible Heavy Duty Dewatering Pump
Description
KBZ dewatering pump is made with a cast iron body, the KBZ pump can withstand the most demanding heavy duty conditions found in construction, aggregate and mining applications.
Specification
- Capacity: up to 160 m3/h
- Head: up to 48.5 meters
- Power:1.5kW(2HP) to 15 kW (20HP)
- Power supply: 380V ± 10%, 50Hz or 60Hz
- Insulation class: F
- Protection class: IP68
- Water temperature: up to 40℃
- water depth: 25m
Features
- Both semi-open impeller and wear plate of this submersible pump are made of high chrome alloy. The hardness of this material is at least 58 HR, it’s more durable than other materials(ductile iron).
- Greatly increased maximum submersion depth due to mechanical seal resistant to high pressure.
- Hermetically sealed motor equipped build-in thermal protection for the power below 15kW.
- Effective motor cooling due to discharge channel cast as part of the motor housing. Space economy by a top outlet Discharge 50mm (2″) to 150mm (6″). Motor l.5kW(2HP) to 15kW(20HP).
- Versatility is increased as each model of KBZ pump has the capability of being easily converted between high head and high volume performance with a simple change of impeller, suction cover and hose coupling.
- Available as optional specifications for KBZ pump are a “seawater-resistant pump” developed over many years by TUSSUpump to enable seawater intake/drainage for long periods of time, and to be a really heavy duty pump.
Applications
- Mines, quarries, coal ore& slurries
- Civil engineering
- Sewage treatment plants
- General pumping purposes
Advantage
- Extreme Wear Resistance (Designed for Harsh Conditions)The critical wet-end components—the impeller and suction plate—are manufactured from premium High-Chrome Alloy ( 58HRC). This specialized material offers ultimate resistance against severe sand, gravel, silt, and slurry abrasion, drastically extending the pump’s operating life compared to standard ductile iron pumps.
- Top-Discharge Cooling Jacket (Anti-Dry Running Design)The pump features a slim, top-discharge design where the pumped liquid is forced to pass through a channel surrounding the motor housing before being discharged. This continuous flow acts as a cooling jacket, allowing the pump to operate safely for extended periods even when semi-submerged, idling, or running at very low water levels without the risk of motor burnout.
- Tsurumi KTZ Equivalent Performance (Cost-Effective Drop-in Replacement)The KBZ series is engineered to deliver the exact same hydraulic performance, flow rates, and high-head capabilities as the industry-benchmark Tsurumi KTZ series. It can seamlessly replace existing units on job sites, providing matching operational efficiency while significantly lowering your procurement and equipment lifecycle costs. (Note: Working performance is a 100% match, though internal spare parts are not interchangeable).
- Heavy-Duty Motor Protection & Smart SafetyBuilt for maximum uptime, the motors feature Class F insulation and an IP68 waterproof rating. All models up to 15kW are equipped with an integrated circle thermal protector. If the pump encounters an unstable voltage drop, a locked impeller, or an overload that causes the temperature to spike, the protector automatically trips to cut off power and resets once it cools down.
- Dual Mechanical Seals for Deep SubmersionTo prevent water ingress under intense pressure, the pump utilizes heavy-duty dual mechanical seals with high-grade Silicon Carbide (SiC-SiC) faces. This superior sealing arrangement ensures exceptional leak protection, allowing the KBZ series to work reliably at submersion depths of up to 25m.
- Hydraulic Flexibility (High Head / High Volume Interconvertibility)The KBZ series offers outstanding on-site adaptability. By simply replacing a few matching parts—primarily the impeller, pump cover, and hose coupling—you can convert a high-head model into a high-volume model (or vice versa). This modular flexibility saves equipment capital and reduces the need to stock multiple pump types in your inventory.
More Product Details
TUSSU®KBZ Series is a heavy-duty, cast-iron submersible dewatering pump engineered for the most demanding mining, construction, and industrial applications.
Performance-Matched to Tsurumi KTZ
The KBZ series delivers the exact same hydraulic performance, flow rates, and high-head capabilities as the Tsurumi KTZ model. It serves as a highly reliable, cost-effective drop-in replacement on-site, ensuring your project maintains peak operational efficiency without any drop in flow or pressure.
KBZ Submersible Dewatering Pump Performance Curve
| KBZ SUBMERSIBLE DEWATERING PUMPS - 50Hz PERFORMANCE DATA | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | Outlet (mm) | Motor power (kW) | Motor power (HP) | Rated current (400V) (A) | Rated capacity (m³/h) | Rated capacity (m³/min) | Rated head (m) | Max capacity (m³/h) | Max capacity (m³/min) | Max head (m) | Impeller passage (mm) |
| KBZ21.5 | 50 | 1.5 | 2 | 3.5 | 15 | 0.25 | 15 | 27 | 0.45 | 22 | 8.5 |
| KBZ31.5 | 80 | 1.5 | 2 | 3.5 | 30 | 0.50 | 8 | 40 | 0.67 | 14.5 | 8.5 |
| KBZ22.2 | 50 | 2.2 | 3 | 5 | 18 | 0.30 | 20 | 33 | 0.55 | 26 | 8.5 |
| KBZ32.2 | 80 | 2.2 | 3 | 5 | 36 | 0.60 | 11 | 55 | 0.92 | 19 | 8.5 |
| KBZ23.7 | 50 | 3.7 | 5 | 7.7 | 12 | 0.20 | 30 | 33 | 0.55 | 34 | 8.5 |
| KBZ33.7 | 80 | 3.7 | 5 | 7.7 | 30 | 0.50 | 20 | 55 | 0.92 | 29 | 8.5 |
| KBZ43.7 | 100 | 3.7 | 5 | 7.7 | 60 | 1 | 11.5 | 90 | 1.50 | 18.5 | 8.5 |
| KBZ35.5 | 80 | 5.5 | 7.5 | 11.4 | 36 | 0.60 | 25 | 75 | 1.25 | 34 | 8.5 |
| KBZ45.5 | 100 | 5.5 | 7.5 | 11.4 | 60 | 1 | 16 | 105 | 1.75 | 23 | 8.5 |
| KBZ47.5 | 100 | 7.5 | 10 | 15 | 48 | 0.80 | 30 | 84 | 1.40 | 40 | 11.5 |
| KBZ67.5 | 150 | 7.5 | 10 | 15 | 90 | 1.50 | 15 | 124.8 | 2.08 | 31 | 19.5 |
| KBZ411 | 100 | 11 | 15 | 22 | 60 | 1 | 35 | 84 | 1.40 | 48.5 | 11.5 |
| KBZ611 | 150 | 11 | 15 | 22 | 102 | 1.70 | 22 | 147 | 2.45 | 32 | 19.5 |
| KBZ415 | 100 | 15 | 20 | 29.5 | 60 | 1 | 42 | 84 | 1.40 | 56 | 11.5 |
| KBZ615 | 150 | 15 | 20 | 29.5 | 102 | 1.70 | 30 | 156 | 2.60 | 40 | 19.5 |
| KBZ SUBMERSIBLE DEWATERING PUMPS - 60Hz PERFORMANCE DATA | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | Outlet (mm) | Motor power (kW) | Motor power (HP) | Rated current (400V) (A) | Rated capacity (m³/h) | Rated capacity (m³/min) | Rated head (m) | Max capacity (m³/h) | Max capacity (m³/min) | Max head (m) | Impeller passage (mm) |
| KBZ21.5 | 50 | 1.5 | 2 | 3.5 | 15 | 0.25 | 16.5 | 27 | 0.45 | 23 | 8.5 |
| KBZ31.5 | 80 | 1.5 | 2 | 3.5 | 30 | 0.50 | 9 | 45 | 0.75 | 15 | 8.5 |
| KBZ22.2 | 50 | 2.2 | 3 | 5.1 | 18 | 0.30 | 20 | 31 | 0.52 | 28 | 8.5 |
| KBZ32.2 | 80 | 2.2 | 3 | 5.1 | 36 | 0.60 | 13 | 47 | 0.78 | 20.5 | 8.5 |
| KBZ23.7 | 50 | 3.7 | 5 | 8 | 12 | 0.20 | 30 | 50 | 0.83 | 33 | 8.5 |
| KBZ33.7 | 80 | 3.7 | 5 | 8 | 30 | 0.50 | 22 | 55 | 0.92 | 31 | 8.5 |
| KBZ43.7 | 100 | 3.7 | 5 | 8 | 60 | 1 | 11.5 | 96 | 1.60 | 18.5 | 8.5 |
| KBZ35.5 | 80 | 5.5 | 7.5 | 11.8 | 36 | 0.60 | 25 | 69 | 1.15 | 38 | 8.5 |
| KBZ45.5 | 100 | 5.5 | 7.5 | 11.8 | 60 | 1 | 18 | 102 | 1.70 | 24.4 | 8.5 |
| KBZ47.5 | 100 | 7.5 | 10 | 15.4 | 48 | 0.80 | 30 | 80 | 1.33 | 41 | 11.5 |
| KBZ67.5 | 150 | 7.5 | 10 | 15.4 | 90 | 1.60 | 15 | 127 | 2.12 | 31 | 19.5 |
| KBZ411 | 100 | 11 | 15 | 22.5 | 60 | 1 | 35 | 84 | 1.40 | 48.5 | 11.5 |
| KBZ611 | 150 | 11 | 15 | 22.5 | 102 | 1.70 | 22 | 147 | 2.45 | 32 | 19.5 |
| KBZ415 | 100 | 15 | 20 | 30 | 60 | 1 | 42 | 84 | 1.40 | 57 | 11.5 |
| KBZ615 | 150 | 15 | 20 | 30 | 102 | 1.70 | 27 | 160 | 2.67 | 39 | 19.5 |
KBZ Submersible Dewatering Pump Structure：
| Item No. | Part name | Material | Item No. | Part name | Material | |
|---|---|---|---|---|---|---|
| 01 | Hose coupling | Cast iron | 27 | Stator | ||
| 02 | Handle | Rubber&steel | 28 | Rotor | Shaft:AISI420SS | |
| 05 | Upper cover | Cast iron | 31a | bearing | Ball bearing | |
| 11 | Motor body | Cast iron | 31b | bearing | Ball bearing | |
| 13 | Pump body | Cast iron | 33 | Motor protector | ||
| 14 | Impeller | High chrome alloy | 34 | Mechanical seal | Sic-Sic/Carbon-Sic(≤2.2kW) Sic-Sic/Sic-Sic(≤3.7kW) | |
| 16 | Inlet plate | High chrome alloy | 35 | Oil seal | ||
| 25 | Strainer | Steel | 47 | Cable |
FAQ:
Q1: What are the main applications of the KBZ series submersible pump?
A: The KBZ series is a heavy-duty, cast-iron submersible pump designed specifically for harsh, abrasive environments. It is widely used for dewatering in civil engineering, construction sites, tunnel shield driving, open-pit mines, quarries, and municipal drainage where the water contains high concentrations of abrasive solids like sand, gravel, silt, and bentonite.
Q2: How does the KBZ series compare to the Tsurumi KTZ model?
A: Performance: The KBZ series is designed to be a direct performance equivalent to the Tsurumi KTZ series. It delivers the exact same hydraulic duty points, flow rates, and high-head capabilities, making it a reliable, cost-effective drop-in alternative for your projects.Parts Compatibility: Please note that while they match 100% in operational performance, the internal spare parts (such as impellers or shafts) are not structurally interchangeable with original Tsurumi components.
Q3: Why is the KBZ pump capable of running continuously even when semi-submerged?
A: The pump utilizes a top-discharge, slim-line cooling jacket design. The pumped liquid is forced to flow upward through a channel surrounding the motor housing before exiting the top discharge. This provides continuous, effective cooling to the motor even if the pump is only partially submerged or idling at low water levels, preventing motor burnout.
Q4: What materials are used for the wet-end components to handle abrasive slurry?
A: To withstand extreme wear, the impeller and the inlet suction plate are manufactured from High-Chrome Alloy ( 58 HRC). This material offers exceptional resistance to abrasive wear caused by sand and slurry compared to standard cast iron or ductile iron. The main pump body and motor casing are made of heavy-duty cast iron for rigid structural durability.
Q5: What built-in motor protection features does the KBZ pump have?
A: Reliability is critical in the field. All KBZ pumps up to 15kW are equipped with a circle thermal protector built directly into the motor. If the motor experiences abnormal current draw, voltage drops, or overheats due to a locked impeller, the protector automatically trips to cut off power, resetting only after the motor cools down to a safe temperature. The insulation is Class F with an IP68 waterproof rating.
Q6: Can the KBZ pump be converted between High Head and High Volume configurations?
A: Yes. One of the key advantages of the KBZ series is its flexibility. By simply swapping out a few matching parts—primarily the impeller, pump cover, and hose coupling—you can easily convert the pump’s characteristics on-site from a high-head model to a high-volume model, or vice versa, to suit changing project demands.
Q7: What are the available sizes and power ranges for this series?
A: Discharge Sizes: Available from 2 inches to 6 inches (50mm to 150 mm).
Motor Power: Ranging from 2 HP to 20 HP(1.5kW to 15kW).
Power Supply: Standard configuration is 3-Phase, available in various regional voltages (380V / 400V/ 415V / 460V) for both 50Hz and 60Hz networks.
