Equipment — UTEK-DELE Axial Fan Range

Blade geometry is only half of a fan. The other half is what happens after moulding: assembly, balancing and the checks that decide whether an impeller will run quietly for years or shake itself loose in months.

UTEK-DELE balances every impeller on a hand laser balancing machine before shipment. Because blade count and hub are treated as a matched set, the balance achieved in the workshop is repeatable: a replacement blade set mounted on the same hub reproduces the original running condition.

Model Range and Specifications

Balancing is the step that turns a set of moulded blades into a fan impeller that can be fitted without a field balancing procedure.

Blade Materials and Temperature Range

Blade material is selected from the working temperature and from the atmosphere around the impeller:

Typical Applications

This series is normally specified for the following duties:

• Production balancing of new impellers

• Re-balancing after a blade replacement

• Large impellers where imbalance grows with diameter

• Service workshops that re-blade fans in the field

Specification Support

When a fan is being specified or replaced, the following points are confirmed before a blade set is released. They are the same checks used for OEM programs and for retrofit projects.

• Duty point: airflow and static pressure required at the working speed, taken from the cooling pack or ventilation requirement

• Installation: available diameter, shroud clearance, mounting pattern and the shaft interface of the existing hub

• Environment: maximum air temperature, dust or gas atmosphere, and whether static discharge has to be avoided

• Drive: available power, belt or direct drive, and whether the fan has to reverse in service

• Service: blade weight for handling during maintenance and spare-part availability across the machine fleet

Blade count, profile and material are then matched to those conditions in a fixed order: material first, then blade count, then hub family, with diameter confirmed against the shroud. Working in that sequence keeps the mechanical interface stable when the duty requirement changes later in the project, and it is why the same blade family can often stay in production while the cooling pack is revised.

Quality Assurance and Dynamic Balancing

The balancing routine is the same across the range, from small H Series impellers to 2200 mm U Series wheels, which keeps service behaviour consistent across a machine fleet.

Customization and Series Overview

Blade count, blade profile, hub family and material can be customized for OEM programs, and existing fans can be reviewed when airflow, noise or durability has to be improved on a running machine. The balancing step is also why blade and hub are sold as a matched set rather than as interchangeable parts.

Related ranges: Balancing machine capability | H Series small impellers | W Series large industrial fans | U Series large fans.