Bearing Lubrication - Kruger BNA General Instructions Manual

Tensioning Forces
Belt Section
SPZ
SPA
SPB
SPC
A
B

BEARING LUBRICATION

Fan equipped with deep grooved ball bearing inserted in rubber damper has sufficient high grade

grease sealed in at the time of manufacture, there is no need for replenishment while in use at
normal speed & normal condition.

Fan equipped with deep grooved ball bearing inserted in pillow block also has sufficient high grade

grease sealed in at the time of manufacture, there is no need for replenishment while in use at
normal speed & normal condition. The pillow block housing has lubrication point suitable for
lubricating when the bearing operating temperature exceeding its nominal of 70 degree, or the
bearing is used in very dusty or damp or high contamination environment.

Fan equipped with spherical roller bearings and CARB toroidal roller bearings, assembled in plummer

block housings has lubrication point when the life of grease is expectancy.

Experience from bearing manufacture indicates a first relubrication exercised after a few days of

operation is very beneficial to all rollers bearings and may even be a prerequisite if the expected
relubrication interval is to be attained when operating speeds are high. For this first relubrication, half
of the normal quantity recommended for regular relubrication is sufficient.

Type of grease used for relubrication should be the same as that used during first fill (mounting).

Never mix greases if it is not known whether they are compatible.
Force required to deflect belt
16mm per metre of span
Small Pulley
Newton (N)
Diamter (mm)
56 - 95 13 - 20
100 - 140 20 - 25
80 - 132 25 - 35
140 - 200 35 - 45
112 - 224 45 - 65
236 - 315 65 - 85
224 - 335 85 - 115
375 - 560 115 - 150
80 - 140 10 - 15
125 - 200 20 - 30
8
Kilogram
force (Kgf)
1.3 - 2.0
2.0 - 2.5
2.5 - 3.6
3.6 - 4.6
4.6 - 6.6
6.6 - 8.7
8.7 - 11.7
11.7 - 15.3
1.0 - 1.5
2.0 - 3.1