Bearings

Question 1

Upper guide bearing alarms and shutdown

Answer 1

2 - RTD - 70C Alarm - goes to Yokagawa
1 - TBB11 - 105C - Alarm and Shutdown 5A
1 - Mercoid - 75C - Alarm and Shutdown 5A
1 - Foxboro - 65C - Alarm - goes to Actuator Cabinet

Question 2

Lower guide bearing dimensions

Answer 2

16 Shoes
14.5” W, 9” T, 3” Thick
1/2 babbitt, lead, tin, copper, antimony
1/4” deep, 3/4” wide groove diagonally across shoe to distribute oil on bearing

Question 3

Lower guide bearing alarms and shutdown

Answer 3

2 - RTD - 70C Alarm - goes to Yokagawa
1 - TBB11 - 105C - Alarm and Shutdown 5A
1 - Mercoid - 75C - Alarm and Shutdown 5A
1 - Foxboro - 70C - Alarm - goes to Actuator Cabinet

Question 4

Thrust bearing dimensions

Answer 4

10 Shoes
25.5” OD, 13.25” ID, 24.25 deep, 2.5” thick
1/2 Babbitt, lead, tin, copper, antimony
96 springs per shoe

Question 5

Thrust bearing parts

Answer 5

Runner - 2 pieces, polished steel, held together with allen head screws
Shoes - 10 shoes, steel with babbitt material
Springs - 96 springs per shoe - pre-compressed and machined at the same time

Question 6

Thrust bearing alarms and shutdown

Answer 6

4 - RTD in shoes - 70C Alarm - Yokagawa
1 - TBB11 - 105C Alarm and Shutdown 5A
1 - Mercoid - 75C Alarm and Shutdown 5A
1 - Foxboro - 70C Alarm - Actuator Cabinet

Question 7

Thrust bearing oil alarm

Answer 7

2 - RTD - 70C Alarm
1 - Foxboro - 55C Alarm
1 - Magnetrol - High oil level - Thrust Bearing Oil Level Alarm
1 - Magnetrol - Low oil level - Thrust Bearing Oil Level Alarm

Question 8

Upper guide bearing dimensions

Answer 8

15.25” W, 9” T, 3” Thick
1/2 babbitt, lead, tin, copper, antimony
1/4” deep, 3/4” wide groove diagonally across shoe to distribute oil on bearing