Q: What is the proper break-in procedure on NSK electro spindles? If the spindles have been idle for some time, does the user need to warm them up before use?

The iSpeed3 Series is a high-precision, high-speed motor spindle. The following procedure must be followed to ensure proper motor spindle operation and longevity.

• The grease inside the bearings will settle during transportation, storage or service. If the motor spindle suddenly runs at high speeds, grease will evacuate from the bearings, causing excessive heat resulting in bearing damage.
• After initial installation, repair, or long periods of non-operation, please follow the break-in procedure detailed in Table 3. For 60,000 rpm spindles, follow steps 1 through 5. For 80,000 rpm spindles, follow steps 1 through 6.

Steps	1	2	3	4	5	6
Rotation Speed	15,000	30,000	40,000	50,000	60,000	80,000
Running Time (min)	15	10	10	15	10	10
Items to Check	No Abnormal Noise	Spindle housing no hotter than 20C . If hotter than 20C stop for at least 20 minutes , check installation and restart Break-in Procedure. (20C=68F)			Spindle housing no hotter than 20C

Note: This data only applies to NSK High Speed Electro Spindles. Other brand electro spindles, or NSK air driven spindles have different procedures, however the NSK is far and a away the most popular and commonly used brand of high speed spindle. The electro spindles are preferred over the air spindles due to their higher cutting power and quiet operation. Air spindles also consume shop air and can tax the air supply system especially when many spindles are in use at the same time.