
KOLEBURG TB50SL Horizontal Submersible Pump Series Product
No Clogging Centrifugal Pump
Specification
| Parameter | Specification |
|---|---|
| Model | KOLEBURG TB50SL Horizontal Submersible Pump |
| Flow Rate | 10-50 m³/h |
| Head | 10-50 m |
| Outlet Diameter | 50 mm |
| Motor Power | 1.1-5 KW |
| Motor Poles | 2 poles |
| Rotational Speed | 2900 rpm |
| Protection/Insulation Class | IP68 / Class F / IE3 |
| Impeller Type | Double Spiral Pump Impeller |
- ISO、CE、EAC
- L/C Accepted
- 7*24H Response
- Accept customization
KOLEBURG TB50SL Horizontal Submersible Pump
Model & Information
Model parameter table, performance curves, drawings
| KOLEBURG TB50SL Series Product Model | |||||||
| NO | Model | Flow (m3/h) | Lift (m) | Power(KW) | Speed( rpm) | Inlet (DN) | Motor Type |
| 1 | TB50SL-Q15H50N5-5A2900 | 15 | 50 | 5.5 | 2900 | 50 | Two-stage motor |
| 2 | TB50SL-Q20H10N1-5A2900 | 20 | 10 | 1.5 | 2900 | 50 | Two-stage motor |
| 3 | TB50SL-Q20H50N7-5A2900 | 20 | 50 | 1.1 | 2900 | 50 | Two-stage motor |


Tailored to your exact needs, our centrifugal pumps are engineered with application-specific parameters to deliver optimized efficiency, durability, and operational reliability.
Materials & Surface Treatments
Pump body & impeller
KOLEBURG TB50SL Horizontal Submersible Pump body and pump impeller main materials and heat treatment process
Pump Casing Material & Treatment
| Material | Key Characteristics | Heat Treatment & Surface Processing |
|---|---|---|
| Cast Iron/Cast Steel | Cost-effective, high rigidity | Annealing; anti-corrosion coating |
| 304/304l Material | Basic corrosion resistance | Solution annealing; passivation |
| 316/316L Material | Superior chloride resistance | Solution annealing; passivation |
| Duplex 2205 | High strength & corrosion resistance | Solution treatment; pickling |
| Rubber Lined | Abrasion-resistant | Lining bonding; surface finishing |
Impeller Materials and Handling
| Material | Key Characteristics | Heat Treatment & Surface Hardening |
|---|---|---|
| ZG/20Cr13 | Wear-resistant, cost-effective | Quenching + tempering (HRC 48-52) |
| 316/316L Material | Dual anti-corrosion/wear | Solution annealing; edge hardening |
| Duplex 2205 | High durability & strength | Solution treatment; precision grinding |
| Titanium Alloy | Extreme corrosion resistance | Solution annealing; surface cleaning |
Centrifugal pump
Application industry
KOLEBURG TB50SL Horizontal Submersible Pump, industry applications and advantages

Ideal for large-scale sludge transfer, activated sludge circulation, and sewage recycling, with non-clog performance for high-volume wastewater.

Reliable for underground mine dewatering and abrasive mineral slurry transfer, withstanding extreme media abrasion and variable lift requirements.

Construction Project
IP68 waterproof rating supports reliable dewatering in submerged or humid construction sites, with high-speed operation enhancing efficiency.
Recommended Material Combinations
According to the usage scenario, the final solution is to match the materials of the pump body and impeller.
| Application Scenario | Pump Casing | Impeller | Combination Rationale |
|---|---|---|---|
| Sewage Treatment Plant | Cast Iron | ZG/20Cr13 | Cost-effective; wear-resistant for wastewater |
| Sludge Thickening System | 304/304l Material | 316/316L | Corrosion-resistant for high-viscosity sludge |
| Chemical Plant | 316/316L Material | 316/316L | Full corrosion protection for chemical media |
| Construction Project | Rubber Lined | Duplex 2205 | Abrasion-resistant for sand-laden water |
Key Product Advantages
- Superior Non-Clogging & Efficient Performance: The double spiral impeller design ensures smooth passage of solids and viscous media, while the 2900 rpm high speed and 10-50 m³/h flow rate deliver powerful conveyance efficiency.
- Strong Material Adaptability: Multiple premium material options (including 316/316L, Duplex 2205) and professional Heat Treatment processes enhance corrosion and wear resistance, adapting to harsh media conditions.
- Reliable & Energy-Saving Operation: IP68 waterproof rating and IE3 high-efficiency motor guarantee long service life and low energy consumption, complying with global energy efficiency and safety standards.

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KOLEBURG TB50L Horizontal Submersible Pump
The world’s leading manufacturer of non-clogging pumps
User support
Provide different support solutions for OEM and KOLEBURG brands respectively.
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Professional technology. Unity, excellence, influence. Excellent service.
Total selection interval chart
Comprehensive reference
Provide you with a multi-caliber selection range reference

submersible pump manufacturers
Our advantages
Double Spiral Pump Impeller
The double spiral pump impeller is engineered with two symmetrically arranged spiral flow channels, which work in tandem to enhance hydraulic efficiency and solids handling performance. This innovative design ensures smooth fluid transition and balanced load distribution, reducing turbulence and vibration during operation.
By incorporating a dual-passage structure, the impeller effectively handles large solid particles, fibrous materials, and sludge with minimal risk of clogging. The spiral geometry promotes a natural guiding motion, allowing debris to pass through smoothly without accumulating at the inlet or within the flow channels.
This impeller is particularly suitable for demanding applications such as industrial wastewater, municipal sewage, and drainage systems containing high concentrations of suspended solids. Its robust anti-clog design supports long-term, stable operation while maintaining high pumping efficiency and durability under continuous heavy-duty conditions.

Our advantages as a centrifugal pump manufacturer
With excellent performance, durability and high energy saving, we provide you with reliable fluid solutions.learn more
We specialize in the independent production of pump casings and impellers, which are the core components of the screw centrifugal pump.
The pump body is precisely cast and machined in-house, ensuring excellent dimensional accuracy and long-term durability.
The impeller adopts high-efficiency spiral and centrifugal geometry, manufactured using CNC machining and dynamic balancing to guarantee smooth operation and superior hydraulic performance.

Cooperation Advantages
Professional Manufacturing Experience
Over 23 years of experience in pump design and manufacturing, focusing on screw centrifugal pumps and wastewater equipment, ensuring reliable quality and stable performance.
Independent Core Component Production
We manufacture pump casings and impellers in-house, using advanced CNC machining and dynamic balancing technology, to ensure precise assembly and high hydraulic efficiency.

We provide custom-designed pump solutions tailored to the specific needs of each client.
Our professional engineering team can adjust key parameters — including flow rate, head, material, inlet/outlet interface, and sealing method — to achieve optimal performance for different working conditions.
Through advanced CFD hydraulic optimization and precision manufacturing, we ensure every customized pump delivers high efficiency, reliability, and durability even under complex environments.

Product application
Driving the lifeblood of industry and protecting urban circulation are the core missions of each of our pumps.
Pump Centrifugal Parts
Reliable parts supply provides worry-free guarantee and long-term operation and maintenance for your pumping system.
Frequently Asked Questions (FAQs)
Our engineering team provides free, expert selection support. Simply share your key parameters—such as fluid type, required flow rate (e.g., GPM or m³/h), total head (e.g., feet or meters), temperature, and system specifications—and we will recommend the optimal pump model for maximum efficiency and reliability.
For standard models, we often have stock available or can offer short production cycles. The exact lead time depends on the specific pump model and our current order schedule. We understand project urgency and offer expedited production options for critical needs whenever possible.
All our pumps come with a comprehensive warranty. We are committed to your long-term satisfaction through a robust support network, offering rapid technical assistance, readily available spare parts, and expert maintenance services to minimize downtime.
The longevity of critical parts like impellers and mechanical seals is our priority. We utilize high-performance materials (e.g., stainless steel, cast iron) and precision manufacturing, including dynamic balancing. Our mechanical seals are sourced from leading suppliers to ensure durability in demanding conditions.

Talk to Our Product Experts Today!
Related Submersible Pump FAQS
1. Fundamentals of Double Spiral Impeller Submersible Pumps: Definitions and Working Principles
1.1 What is a double spiral impeller submersible pump and how does it work?
1.2 What are the core components of a high-performance submersible pump?
| Core Component | Primary Function | Quality Assurance |
|---|---|---|
| Pump Body | Encloses internal components and guides media flow | Precision casting with leak-proof sealing |
| Double Spiral Impeller | Generates centrifugal force for fluid movement | Wear-resistant materials and heat treatment |
| Motor | Powers impeller rotation | IE3 high-efficiency rating and Class F insulation |
| Mechanical Seal | Prevents media from entering the motor | Corrosion-resistant design for long-term sealing |
2. Application Scenarios and Media Compatibility of Submersible Pumps
2.1 Which industries benefit most from double spiral impeller submersible pumps?
| Application Scenario | Key Product Advantage | Industry Alignment |
|---|---|---|
| Sewage Treatment Plant | 10-50 m³/h flow rate handles continuous wastewater conveyance | Environmental Protection Industry |
| Chemical Plant | Corrosion-resistant materials adapt to chemical effluents | Industrial Productionk |
| Sludge Thickening System | Double spiral design prevents sludge clogging | Wastewater treatment standards |
| Construction Project | IP68 rating supports submerged dewatering | Special projects |
2.2 What types of media can horizontal submersible pumps handle effectively?
| Media Type | Key Characteristics | Recommended Material |
|---|---|---|
| Municipal Sewage | Suspended solids, low corrosion | Cast Iron / ZG/20Cr13 |
| Industrial Sludge | High viscosity, abrasive particles | Duplex 2205 |
| Chemical Effluents | Mild to moderate corrosiveness | 316/316L Material |
| Sand-Laden Water | Abrasive, high wear potential | Rubber Lined |
3. Key Specifications and Performance Metrics of Submersible Pumps
3.1 What are the critical performance parameters of the KOLEBURG TB50SL submersible pump?
| Performance Parameter | Specification | Industry Advantage |
|---|---|---|
| Flow Rate | 10-50 m³/h | Wide range adapts to varying demands |
| Head | 10-50 m | Covers low to medium-high lift requirements |
| Outlet Diameter | 50 mm | Standard size for easy pipeline integration |
| Motor Power | 1.1-5 KW | Energy-efficient for diverse applications |
| Rotational Speed | 2900 rpm | High-speed operation enhances conveyance efficiency |
3.2 How does motor efficiency class impact submersible pump operation?
| Efficiency Class | Energy Saving Potential | Operational Benefit |
|---|---|---|
| IE3 | 10-15% vs. IE2 motors | Lower electricity costs over lifespan |
| Class F Insulation | Temperature resistance up to 155°C | Safe operation in high-heat environments |
4. Material Selection and Heat Treatment for Submersible Pump Casings and Impellers
4.1 What material options are available for submersible pump casings and impellers?
| Component | Material Options | Key Advantage |
|---|---|---|
| Pump Casing | Cast Iron, Carbon Steel, 304/304L, 316/316L, Duplex 2205, Rubber Lined | Balances cost and durability |
| Impeller | ZG/20Cr13, 316/316L, Duplex 2205, Titanium Alloy | Optimized for media-specific wear resistance |
4.2 How do heat treatment processes enhance submersible pump component durability?
| Heat Treatment Method | Application Component | Core Benefit |
|---|---|---|
| Annealing | Cast Iron Casings | Relieves internal stress, prevents cracking |
| Solution Annealing | Stainless Steel Parts | Enhances corrosion resistance and ductility |
| Quenching + Tempering | ZG/20Cr13 Impellers | Hardens material (HRC 48-52), improves wear resistance |
5. Installation, Operation, and Maintenance of Horizontal Submersible Pumps
5.1 What are the essential steps for installing a horizontal submersible pump?
| Installation Step | Key Operation | Safety & Performance Note |
|---|---|---|
| Site Preparation | Ensure level, debris-free installation area | Reduces vibration and impeller damage |
| Pipeline Connection | Use 50mm diameter pipes with secure couplings | Prevents leakage and pressure loss |
| Motor Wiring | Connect to compatible power supply, verify insulation | Complies with electrical safety standards |
| Submersion Check | Ensure full submersion without air entrapment | Optimizes suction and motor cooling |
5.2 How often should submersible pumps be maintained and what does it involve?
| Maintenance Interval | Core Tasks | Purpose |
|---|---|---|
| Monthly | Inspect mechanical seal for leaks, clean intake | Prevents clogging and media leakage |
| Quarterly | Check motor temperature, lubricate bearings | Reduces friction and extends motor life |
| Annually | Inspect impeller wear, test insulation resistance | Ensures efficient performance and safety |
6. Industry Standards and Certifications for Submersible Pumps
6.1 What international standards do high-quality submersible pumps comply with?
| Industry Standard | Compliance Aspect | User Benefit |
|---|---|---|
| IP68 Protection | Waterproof/dustproof performance | Safe operation in fully submerged conditions |
| IE3 Efficiency | Motor energy consumption | Lower operational costs |
| ISO 9001 | Quality management | Consistent product reliability |
| Class F Insulation | Motor temperature resistance | Safe operation in high-heat environments |
6.2 What does the IP68 waterproof rating mean for submersible pump operation?
- IP6X (Dust Protection): Complete dust ingress prevention, protecting electrical components from corrosion and short circuits.
- IPX8 (Water Protection): Safe operation in continuous submersion (customizable depth), suitable for long-term use in sewage tanks, construction pits, and other wet environments.
7. Customization and After-Sales Services for Submersible Pumps
7.1 Can submersible pumps be customized for specific industrial needs?
| Customization Option | Available Choices | Application Scenario |
|---|---|---|
| Material Selection | 304/304l Material, Titanium Alloy, Rubber Lined | Corrosive/abrasive media |
| Motor Power Adjustment | 1.1-5 KW range | Specific flow/head demands |
| Accessories | Special Electrical Cabinet, automatic coupler | Automated operation |
7.2 What after-sales support is provided for KOLEBURG submersible pumps?
- 1-year warranty on pump body and motor, covering manufacturing defects.
- 24/7 technical support for installation, operation, and troubleshooting.
- Fast delivery of genuine spare parts (e.g., mechanical seals, impellers) to minimize downtime.
- Annual performance inspection and maintenance guidance.
8. Safety and Applicability of Submersible Pumps in Harsh Environments
8.1 How to ensure submersible pumps operate safely in corrosive environments?
- Choose corrosion-resistant materials (316/316L, Duplex 2205, Titanium Alloy) based on media chemistry.
- Opt for sealed components (e.g., mechanical seals) to prevent media contact with electrical parts.
- Conduct regular corrosion inspections per industry guidelines.
8.2 Are horizontal submersible pumps suitable for continuous operation?
- The 2900 rpm motor is designed for long-running durability with Class F insulation.
- IP68 protection prevents overheating and moisture damage during extended use.
- Wear-resistant materials and heat treatment ensure components withstand prolonged stress.



















