Lubrication Delivery Methods Machinery's Handbook, 31st Edition
2516
20,000
For bearings at 150 F. Half periods for every 25 F increase in temperature. Where grease nipples are provided, lubricate at each,
4000 5000 6000 7000 8000 900 10,000
one-fourth of renewal period. Open and Repack at full period. Note:
One Working Year. 8 Hours/Day A) 2400 Hrs. 6 Day Week, 11 Holidays B) 2200 Hrs. 5.5 Day Week, 11 Holidays C) 2000 Hrs. 5 Day Week, 11 Holidays
3000
2000
Ball Bearings
700 800 900 1000
Plain Roller Bearings
400 500 600
300
Taper and Spherical
200
100
0
80,000
160,00
200,00
280,00
40,000
120,00
180,00
240,00
Speed Factor dn , mm
Fig. 12. Grease Renewal Period based on Running Time and Speed providing optimal full film lubrication to the bearing. Although more expensive initially, automated centralized systems are credited with significant savings by extending bear - ing life up to three times longer than manually lubricated bearings. They also reduce downtime in changing out bearings, reduce lubricant consumption, and reduce energy consumption. Table 18 compares the different types of methods and delivery systems and some of their features, and can be used as a guide in determining a suitable lubrication delivery approach. Table 18. Lubrication Method and System Comparison Guide Feature Hand Pack Manual Gun Single Point Centralized Total Loss Centralized Recirculating Self Contained Splash/Bath Gravity Fed Oil d d d d d d Grease d d d d Continuous Delivery d d d d Cyclic Delivery d d Automatic Control d d d d Manual Control d d d d Positive Displacement d d d d Line Monitor Protection d d # Lube Points Unlimited Unlimited 20 Min. 200 Max. 20 Max.
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