Balancing Service

Balancing Service

bullet Balancing according to DIN-ISO 1940

If you have to balance just one, two or a small batch of rotors, but don’t have the right machine to do the job, we are the right place to go to – even with the most unusual rotor.

  • HSK, ISO, BT- tool holders
  • Spindle shafts
  • Rotors, Rotor shafts
  • Couplings
  • Air fans, ventilation systems
  • Grinding arbors
  • Special machine equipment and testing spindle devices is possible up to 200kg rotating mass and up to 500kg per piece possible

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ISO 1940/1 is an international standard used for qualifying the balance of rotating rigid bodies. The standard also specifies the method for verifying residual imbalance. G1.0 is a particular balance grade within the overall standard. Compliance with this standard requires that the maximum residual imbalance falls within certain limits dependent on the overall mass of the rotating body. Grade G1.0 is on the finer end of the spectrum and typically the qualifying range for high speed precision spindles.
※ Some standard ISO grades and their applications are listed below

  • G16 – Drive shafts, engine components, engine crankshafts
  • G6.3 – Marine main turbine gears, pump impellers, electric armatures
  • G2.5 – Marine main turbine gears, pump impellers, electric armatures
  • G1 – Grinding machine drives, small electric armatures, phonograph drives, Spindles, precision grinders
  • G0.4 – Gyroscopes

This chart shows the specific amount of residual imbalance that is allowed for different ISO 1940/1 grades. Note that the graph is logarithmic.

DK_12-ISO-1940-Graph DK_10816 DK_Vibration-Severity-Chart
*Click for larger image.

bullet Why?

A balancing of ALL stressed parts of the spindle system is unavoidable.
This applies to milling spindles, grinding spindles and turning spindles.
Small, high-precision rotors, or rotors running at speeds of several ten thousand revs per minute require highest demands on balancing accuracy. When the permitted residual unbalance is in the order of several micrograms, a balancing system will soon show itself for what it’s worth. To achieve this quality standard, you need a partner with superior expertise in his field.

Precision balancing requires the perfect interaction of man and machine. Not only are our specialists familiar with the relevant balancing processes, they also have extensive experience with rotors with a variety of properties and they know how to make optimum use of the advanced features offered by a modern balancing system.

Balancing quality of the spindle / drive
+ Balancing quality of the tool holder
+ Balancing quality tools

= Total balance quality (this must be below G2.5 tolerance to achieve longest spindle operation hours)

Balancing types

According to ISO, a rigid rotor can be balanced in 2 levels (perpendicular to the rotor axis) by adding or reducing masses in this two balancing levels. A rigid rotor is called as such if the balancing quality is independent of the operating speed (for the entire range from zero up to the permitted maximum speed). The condition just described can be assumed in most cases in milling and grinding spindles. For rigid rotors are two types of imbalance can be distinguished
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Whether you are dealing with precision spindles, rotors for the aeronautical or aerospace industries, high-speed tools or drive components: Our balancing service will assure a high level of quality for your high-performance products.

Contact us – we will be pleased to help you – quickly, reliably and competently.

Deuschle Korea Ltd. ㅣ CEO : Woo-Seok Heo, Jonathan Deuschle

104-1112, SK Ventium, 166, Gosan-ro, Gunpo-si, Gyeonggi-do, Korea
Tel : +82-31-436-2252(General), +82-31-436-2253
Fax : +82-31-436-2230 E-mail : office@deuschle.co.kr