Spindle Maintenance & Initial Operation

A schedule of preventive maintenance will help keep your spindle operating at peak performance.


Keep the spindle housing, fans and ductwork clean to allow free movement of cooling air. Clean tool tapers, collet cavities, shafts and collets clean using denatured alcohol. Never use lubricants or oils on tooling items. Failure to keep tooling clean can cause tool misalignment, out of balance, tool slip and poor quality cuts.


For stored as well as for new spindles it is important to consider the following points:

1. The STORAGE PLACE must be dry and free from dust and dirt.
2. The temperature should be between 10 and 25°C and it should not fluctuate.
3. During the storage the spindle must be kept in secure packaging and shock-free.
4. After the storage the spindle may only run at the rated speed after “RUN IN” has been effected.

Initial Operation

To reach an ideal operating temperature the spindle must be taken into service as described below in order to reach the running temperature slowly. Thereby the lubricant for the bearings will be tempered and spread.

This “RUN IN” guarantees max. reliability and life expectancy of the bearings.

RUN IN - INSTRUCTIONS for the initial operation of your spindle


The quality of the storage location and the environmental influences can lead to harmful effects for the condition
of the lubricating grease, i.e. that during long storage times (> 1 year) the environmental influences (such as humidity, temperature etc.) can cause changes for the lubricating function of the grease.


  • The spindle must always be run-in with tool.
  • For first- and re-entering into service, especially for clamping systems with hydraulic clamping, the setting dimension of HSK or ISO taper must always be tested.
  • The spindle must always be installed and run-in according to the operating and instruction manual.
  • Only adequate assembly tools may be used for the mounting and dismounting. See the max. torque-speed and tightening forces of the screw- and clamping connections during assembling.
  • Spindles are high precision instruments! Protect your spindle of shocks and mechanical damage during the installation, especially near the clamping system and near the supplies (electricity, cooling, air, sensors etc.).
  • Check the pull-in force regularly during spindle run and take care of cleanliness of the clamping system.
  • Use only balanced high precision tools and balanced HSK / ISO tool fittings (< G2) – During the spindle run take care of the max. tool lengths acc. to country specific work and environment regulations!
  • Inspect your tools and tool fittings regularly for signs of damages / bursts etc.
  • Always inspect the flow-through and the flow volume of the coolant at liquid-cooled spindles. Change and replace regularly the old cooling liquid acc. to the manufacturer instructions.
  • Take care of the prescribed settings for sealing air, oil-air and oil mist acc. to your instruction manual and check these regularly.

Also decisive for a long-life time of your spindle is the correct installation and operation acc. to the spindle documents.


Brand Cross spindle service and manufacturing Motor spindle. For every application the appropriate spindle.

  PDS GmbH Deutschland

Tichelbrink 68, 32584 Löhne, Deutschland




0573 1744 889-0


Zentrale: +49 (0) 57 31 / 74 48 89-0
Fax: +49 (0) 57 31 / 74 48 89-20
E-Mail: info@pdsspindeln.de

Zentrale: (704) 922-1206
Fax: (704) 922-1217
E-Mail: spindles@pdsspindles.com
Web: www.pdsspindles.com