Product Overview

The TBD series is one of the most widely used horizontal single-suction, multistage segmental clean-water centrifugal pumps in Chinese industry. It is mainly used to handle clean water or liquids physically and chemically similar to water (free of solid particles, mildly corrosive), and is widely applied in mine dewatering, plant water supply, municipal water supply and boiler feed duties.

Core Structure & Working Principle

High-efficiency hydraulic model (CFD-optimised)

Impeller and guide vanes are designed using three-dimensional flow plus CFD simulation. Selected models achieve IE3 efficiency. The wide high-efficiency band suits variable-duty operation, such as mine dewatering with changing water levels.

Axial thrust balancing system

A balance disc and balance sleeve automatically counteract the axial thrust generated by the multistage impellers. Optimised balance-clearance control reduces leakage and extends service life.

High-strength rotor system

The main shaft is 40Cr alloy steel or 2Cr13 stainless steel, quenched and tempered with surface hardening. Impellers are HT250 cast iron (clean water) or ZG230-450 (DG high-temperature version) with precision dynamic balancing to G2.5 grade. Replaceable shaft sleeves protect the main shaft from wear.

Bearings and lubrication

Rolling bearings at both ends (SKF/FAG cylindrical roller bearings), grease-lubricated, with maintenance-free intervals of 8,000 hours or more. Bearing housings include a temperature-measuring port (PT100 optional).

Wear- and Corrosion-Resistant Material Options

Configuration Options

Sealing Method：

• Mechanical seal: Suitable for normal clean-water duty; a single-face mechanical seal is used, giving minimal leakage and high sealing reliability for applications where leakage is not permitted

• Gland packing seal: Simple, easy to maintain and cost-effective; a small amount of leakage is permissible.

TBD series multistage centrifugal pump performance chart

Note: Approximate performance on clear water; for preliminary selection only.