nord 6052902/0213, Руководство с инструкциями по установке, Страница: 41 / 128

3 Transport, storage, assembly
B 1050 en-3921 41
3.8 Installing a flange version gear unit (Option: F, FK, VL2/3/4/5, KL2/3/4)
NOTICE
Risk of gear unit damage from distortion
• Flange version gear units must only be bolted to the flange of the driven machine.
The bolting surface of the driven machine must comply with the tolerances in Section 7.5 "Tolerances
for bolting surfaces". The flange of the driven machine must be free of vibration and torsionally rigid.
The diameter of the hole circle and the size of the threaded holes on the flange of the gear unit can be
obtained from the order-related dimension sheet.
The bolting surfaces of both flanges must be clean.
3.8.1 Agitator version (Option: VL2, KL2)
These options provide reinforced drive shaft bearings with a greater bearing spacing. These can
absorb high radial and axial forces for a longer service life.
For Option VL2, the bottom bearing is an oversized, double-row spherical roller bearing.
For Option KL2, the bottom bearing is a conical roller bearing.
On the flange, there is a grease nipple for the bottom bearing as well as a screw plug, through which
excess grease can escape from the grease chamber.
Legend
1: Grease nipple
2: Closing cap for grease escape
Figure 17: VL2 Option
3.8.2 Agitator version with Drywell (Option: VL3, KL3)
NOTICE
Check the leak indicator regularly (see chapter 5.2.5.5 "Checking the leak indicator (Option: VL3, KL3
with Drywell)").
These options have the same dimensions and load limits as Option VL2/KL2 (see 3.8.1 Agitator
version (Option: VL2, KL2).
The difference is that in the area of the lower roller bearing an oil-free space is created by sealing with
two radial shaft sealing rings.