EL-Salam Workshop is specialized in on-site and in-shop balancing. We have solved the most intriguing problems on site (balancing, alignment) and balanced the most sensitive rotors in-shop.
 In-Shop Capabilities

Weight	80 gm - 90,000 kg (90 Tons)
Length	According to the length of rotor
Diameter	Up to 7m

All our balancing machines are of soft bearing type. The soft bearing balancing machine operate by rotating the workpiece at speeds above the natural frequency of the suspension system. The suspension system is soft and it has a rather very low natural frequency.
Why is soft bearing balancing machines the more sensitive type?
The free moving suspensions and support rollers provide a high degree of sensitivity because they do not restrain the free vibratory motion of the rotor. This provides for optimum balancing accuracy at low rotational speeds & linear response to unbalance vibration displacement throughout the balancing speed range.

Type	Advantages	Disadvantages
Gravity	Low cost Simple, safe   Three-dimensional balancing	Static balance only Limited by friction
Soft bearing	Most sensitive type  Rotor inertia absorbs energy of unbalance Not affected by nearby activity Simpler electronics High signal-to-noise ratio Low-speed balance sensitivity Can be relocated and set up elsewhere “Hand” calibration	Requires calibration for each rotor weight Large motion when going through resonance  Parasitic mass of suspension limits sensitivity
Hard bearing	Permanent calibration Absorbs high initial unbalance Direct readout of unbalance  No phase shifting Cross-effect easy to deal with More suitable for production because of low motion	Less sensitive Requires massive foundation Sophisticated electronics Affected by nearby activity High-speed operation dangerous Transmits vibration into floor Not suitable for moving around

Excerpt from “Machinery Vibration:Balancing”
"The best spectrum analyzer in the world and the most powerful expert diagnostic software will not solve a single vibration problem. A competent person with good problem solving skills is needed to apply the data that instruments provide. Eventually, someone with toolbox must fix the vibration problem. In that toolbox must be a variety of corrective methods that match the variety of possible problems. Unbalance is the most common cause of excessive vibration and balancing tools will occupy a major portion of that toolbox " - Machinery Vibration: Balancing.