Shaft End, A-Side; Shaft Seal; Protective Device - Kollmorgen AKM 2G Manuel D'installation

1.4.2.6 Shaft end, A-side

Power transmission is made through the cylindrical shaft end A, fit k6 to EN 50347, with a
locking thread but without a fitted keyway.
Motors are also available with keyway and inserted key according to DIN 6885. The shaft
with keyway is balanced with short (half) key.
Bearing life is calculated with 20.000 operating hours.
Order code
N
C
Radial force
If the motors drive via pinions or toothed belts, then high radial forces will occur. The per-
missible values at the end of the shaft may be read from the diagrams in chapter "Drawings"
from (➜ # 231). The maximum values at rated speed you will find at the technical data from
(➜ # 158). Power take-off from the middle of the free end of the shaft allows a 10% increase
in F .
R
Axial force
When assembling pinions or wheels to the axis and use of e.g. angular gearheads axial
forces arise. The maximum values at rated speed are found in the technical data.
Coupling
Double-coned collets have proved to be ideal zero-backlash coupling devices, combined, if
required, with metal bellows couplings.

1.4.2.7 Shaft seal

If AKM2G is connected to a machine flange with unsealed shaft region, then the shaft seal
(option "0T" or "0V") ensures the shaft sealing.
The shaft seal ensures the IP65 protection for the shaft area.
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The rated performance is achieved after some hours of shaft seal run-in. No special pro-
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cedure for run-in is needed.
Some "shedding" of Teflon material is normal and does not affect the function.
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Shaft seal operation in dry-running mode is prohibited. Contact Kollmorgen for special
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shaft seal solution in case the dry-running operation is required.
Shaft seal is pre-lubricated by grease.
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1.4.2.8 Protective device

The standard version of each motor is fitted with an electrically isolated PT-1000+ PTC. The
thermal sensors do not provide any protection against short, heavy overloading.
The motor can be delivered with a PT-1000, PTC, or KTY 84-130 equivalent sensors option-
ally (see Thermal Sensor options 1, 2, 3).
With digital feedback system SFD3, CA the temperature sensor status is transmitted digit-
ally and evaluated in the drive.
Provided that our configured feedback cables are used, the sensor is integrated into the mon-
itoring system of the digital servo amplifiers.
Shaft end Available for
Smooth shaft AKM2G 2-7
Keyway, closed AKM2G 2-7
Kollmorgen | kdn.kollmorgen.com | August 2018
AKM2G Instructions | 1 English
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