Symbiosis Brand Centrifugal Blowers & Fans

Usha Die Casting Industries (Industrial Equipment Division)Specializes in the Custom Design, Manufacture and Testing of SYMBIOSIS Brand Industrial Fans and Blowers in materials of construction like MS, CS, SS, FRP Lined and in Impeller types like Backward Curved and Radial Blades.

We offer a complete range of Sizes and Impeller Designs which allow us to meet
all Industrial Air Moving requirements. Our company success is based upon our Experience, High degree of flexibility, Excellent product range and a Strong commitment to Quality Assurance.

Regardless of the type of fan we recognize that Reliability is of prime importance. We understand that downtime is expensive for our clients and we do the Utmost to Design and Build our Fans with Reliability and Low Maintenance in mind.

We cater to numerous applications for Blowers in industries and areas like

Steel Plants

Palletizing Plants

Alluminium Smelters

Fertlizer & Petrochemical industry

Fumes Exhaust for Welding and Painting

Air Pollution Control systems

Incineration

Wooden Furniture manufacturing

Mancooling application in Hot areas

Furnace

Boilers

Textile machinery

Oil & Gas Exploration Installations

Chemical & Paper Industry

Coal Handling

Cement & Lime

Pharmaceutical & Dairy

Foundries

Outlet position viewed upon the drive side

The design of a centrifugal fan is mainly determined by the geometrical conditions of the installation. The following gives an overview of our most common designs. In addition we manufacture a large number of special designs to customer specifications.

Types

Direct Drive

In most cases one attempts to use a direct drive. It is more compact, has less parts to be serviced and in most cases is cheaper than other designs.


V-Belt Drive

When fan speeds that cannot be achieved with direct drives or there are installation specific requirements, a V- belt drive is used. The motor mounting can be done in a number of different ways.


Coupling Drive

For accommodating a starting torque or variable torque e.g. when using the fan for material transport to be dampened while protecting the motor, then a drive using an elastic coupling is being used.

Impeller Designs

Narrow width fully shrouded Radial bladed High pressure Impellers of Centrifugal Fans suitable for clean air applications such as combustion air, fluid bed aeration, blow off, cooling, conveying, drying and high pressure industrial process systems.

Type: Narrow Radial Blade (SWSI)
Efficiency Range: 64% to 69%
Shroud Style: Conical
Advantages: High Speed & High Strength
Application: As a Pressure Blower


Radial bladed impeller is non-clogging and is suitable for heavy dust loadings and materials handling. Although this design is less efficient than a backward bladed impeller, this fan can withstand the impact of large solids and the self-cleaning blade configuration prevents the accumulation of residue on the impeller.

Type: Medium Radial Blade (SWSI)
Efficiency Range: 74% to 76%
Shroud Style: Conical
Advantages: High Speed & High Strength
Application: Good for Dust Laden Air Streams

Type: Medium Radial Tipped (SWSI / DWDI)
Efficiency Range: Upto 75%
Shroud Style: Conical
Advantages: High Speed & High Strength
Application: Good for Dust Laden Air Streams

Type: Wide Radial Tipped (SWSI / DWDI)
Efficiency Range: Upto 79%
Shroud Style: Conical
Advantages: High Speed & High Strength
Application: Good for Dust Laden Air Streams


Backward Curved Impeller designs generally represent High Efficiency and cost effective Centrifugal Fans for both clean air and light dust loads. The absorbed power curve has a flat peak non-overloading characteristic. These fans can surge or pulsate when their air volumes are reduced to the point where they operate to the left of their pressure peaks

Type: Narrow Backward Curved (SWSI)
Efficiency Range: 80% to 82%
Shroud Style: Conical / Parallel
Advantages: High Speed & High Strength

Type: Medium Backward Curved (SWSI / DWDI)
Efficiency Range: Upto 82%
Shroud Style: Conical / Parallel
Advantages: High Speed & High Strength

Type: Wide Backward Curved (SWSI / DWDI)
Efficiency Range: Upto 82%
Shroud Style: Conical
Advantages: Low to Medium Speed & Medium Strength

Plug units

Plug units are solidly welded, non-overloading fans which can be square panel mounted to the side or top of oven dryer panel. The mounting panel is insulated. These fans are designed for internal operation in furnaces, ovens or kilns where air has to be exhausted, re-circulated, or distributed. Plug units eliminate ductwork and special mounting platforms.

Balance & vibration

There are many factors that can have a substantial effect on the Vibration level of air movement equipment; such as Wheel balance, Rotational speed, Drive components, Motor operation and Wiring. Providing equipment that operates well within acceptable Vibration levels requires Consistent Quality in Production and attention to details. At UDCI, we spend the extra time and money required to make this kind of commitment.

Vibration is defined as "the Alternating mechanical motion of an elastic system, components of which are Amplitude, Frequency and Phase." The two components of Vibration that demand utmost attention are Amplitude and Frequency. Amplitude defines how far the Rotating body moves from the center rotating axis, and the frequency is the number of cycles, or revolutions that occur within a specified time period.

Drives

Positions

Installation positions and direction of rotation of the Impeller for Centrifugal Fans defined from the Drive Side is given as below.