40°C CLEAN, LITTLE CORROSION DEEP GROOVE BALL BEARING
50°C MODERATE DIRT, CORROSION BALL THRUST, ROLLER
>50°C* OR
CLASS H INSULATION
SEVERE DIRT, ABRASIVE DUST
ALL BEARINGS
<-30°C** CORROSION
* Special high temperature grease is recommended.
** Special low temperature grease is recommended.
**
2,700 hr 5,500 hr 12,000 hr 18,000 hr 22,000 hr
3,600 hr 9,500 hr 15,000 hr 18,000 hr
*2,200 hr 7,400 hr 12,000 hr 15,000 hr
*2,200 hr 3,500 hr 7,400 hr 10,500 hr
* Lubrication intervals are for ball bearings For roller bearings, divide the listed lubrication interval by 2
** For 6205 and 6806 bearings For 6807 bearings, consult oil mist lubrication (MN410)
Relubrication interval for 6205 bearing is 1,550 hr (Using grease lubrication)
Relubrication interval for 6806 bearing is 720 hr (Using grease lubrication)
STANDARD 1.0
SEVERE 0.5
EXTREME 0.1
LOW TEMPERATURE 1.0
Bearing grease will lose its
lubricating ability over time. The lubricating ability of grease
depends primarily on the type of grease, the size of the
bearing, the speed at which the bearing operates and the
severity of the operating conditions. Good results can be
obtained if the following recommendations are used in your
maintenance program:
• A high-grade ball or roller bearing grease should be used.
Recommended grease for standard service conditions is
Polyrex EM (Exxon Mobil).
– Maximum operating temperature for standard motors =
110°C.
– Shutdown temperature in case of a malfunction = 115°C.
• Proper Lubrication Intervals – Recommended lubrication
intervals are shown in Table 4. It is important to realize
that the recommended intervals of Table 4 are based on
average use. Refer to additional information contained in
Tables 5 and 6.
• Motor Lubrication Procedure (Figure 52)
– With Grease Relief Plug
1. Clean all grease ttings.
2. Remove grease relief plug.
3.
Add only the recommended amount of grease
.
4. Reinstall grease relief plug
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