APPLICATION OF CN 400-105 PUMP
The pump belongs to the general-purpose pump category and is designed for pumping water and liquids with properties similar to water in terms of viscosity and chemical activity, with temperatures up to 100 °C, solid content not exceeding 0.05% by mass, maximum particle size 0.2 mm, and microhardness no more than 6.5 MPa (650 kgf/mm²). It is suitable for industrial and municipal water supply systems, agriculture, land reclamation for irrigation and drainage, and other applications.
TECHNICAL SPECIFICATIONS
Rated parameters of the CN 400-105 pump and its variants depend on the impeller outer diameter. This parameter is critical for designing the external network (pipeline system and fittings) and selecting pump equipment.
Overall dimensions and weight of the CN 400-105 pump and its variants also depend on the impeller outer diameter.
As a drive, CN 400-105 pumps and their variants use three-phase asynchronous motors with a squirrel-cage rotor.
The overall system efficiency (η) ranges from 76% to 73%.
MAIN DESIGN REQUIREMENTS OF CN 400-105 PUMP:
- High reliability and cost-efficiency
- Extended operating range via impeller trimming
- Long service life – average service life before overhaul at least 32,000 hours (with proper maintenance)
- Dynamic stability across all operating modes
- Stable, continuously declining head curve to ensure stable operation in parallel operation
- Proper material selection for main components to ensure required service life
- High degree of standardization
- Ease of assembly, disassembly, maintenance, and high maintainability under operating conditions
DESIGN FEATURES OF CN 400-105 PUMP:
- Horizontal configuration: ensures high vibration resistance, reduces shaft misalignment, and increases the service life of components
- Volute type with horizontal split along the pump axis: provides high maintainability, easy technical service, and simple operation. Inlet and discharge nozzles located at the bottom of the casing allow assembly/disassembly without disconnecting pipelines
- Two-stage pump with single-suction impellers
- Casing: cast iron, two parts (upper – pump cover, lower – pump body), with semi-volute inlet channels, volute outlet, and interstage transfer channel. Inlet and discharge nozzles, bearing supports, leak collection trays, and mounting for bearing housings are cast in the lower part. Nozzles are opposite and perpendicular to pump shaft. Stage cavities are separated by an intermediate sealing ring
- Rotor: assembled unit with shaft, impellers, protective bushings, rings, bearings, fasteners, and pump half-coupling. Impellers are axially fixed with split rings
- Symmetrical impeller arrangement (discs facing each other) unloads rotor from axial force
- Rotor supports: external rolling bearings. Drive side – single-row radial ball bearing (radial loads), opposite side – double-row angular contact ball bearing (radial + residual axial loads). Bearings lubricated with grease, cooled by air
- Shaft seals: gland type with hydraulic seal; sealing fluid supplied to hydraulic seal ring
- Torque transmission: elastic pin-bushed coupling between motor and pump
MATERIALS OF CN 400-105 PUMP BY CHT SLOVAKIA S.R.O.
Reliability, durability, and efficiency are ensured by high-quality materials. Pump casing, bearing housings, and impellers are made of SCh200 cast iron for strength and corrosion resistance. Shaft, protective bushings, sealing rings, and intermediate sealing rings are made of carbon steel grade 40 for strength and wear resistance.
ADDITIONAL SUPPLY OPTIONS FOR CN 400-105 PUMP:
- High-grade materials and coatings for hydraulic parts to improve erosion resistance
- Optimized pump and hydraulic design to reduce maintenance costs and extend service life
- Mechanical seal: reduces leakage and increases energy efficiency, easy maintenance
- Seal chamber designed according to API 682 for compatibility with various mechanical seals
- Bearing units with liquid, ring (sump) lubrication and oil cooling for longer service life and efficiency
- Provision for sensors on bearing housings to monitor temperature and vibration, preventing damage and ensuring high reliability
- Rolling bearings by SKF with high precision and low friction for low noise, wear, heat generation, and energy consumption
- Elastic disc coupling (between motor and pump) for improved vibration characteristics and unit reliability
- VDS monitoring system: includes vibration, speed, and temperature sensors to collect, analyze, and store pump data, allowing timely detection of issues and planned maintenance
PURCHASING CN 400-105 PUMP FROM CHT SLOVAKIA S.R.O.
To order a specific unit or receive consultation on selection, contact our sales department by phone listed on the website or submit a request via the feedback form. Products are delivered to all CIS countries (except Russia and Belarus) and Europe.
