KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
30of36
15
Please note protection
mark ISO 16016.
Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
Hints and Instructions Regarding the Use in Hazardous Areas
5.2 Control Intervals for Couplings in Hazardous Areas
explosion group
control intervals
3G
3D
For couplings which are classified in category 3G or 3D the operating and assembly
instructions that are usual for standard operation apply. During the standard operation
which has to be subject to the analysis of danger of ignition the couplings are free from any
ignition source. Merely the temperature increase produced by proper heating and
depending on the coupling type has to be considered:
for ROTEX
®
GS: ∆T = 20 K
II 2GD c IIB
T4, T5, T6
A checking of the circumferential backlash and a visual check of the flexible spider must be
effected after 3,000 operating hours for the first time, after 6 months at the latest.
If you note an unconsiderable or no wear at the spider after this first inspection, the further
inspections can be effected, in case of the same operating parameters, respectively after
6,000 operating hours or after 18 months at the latest.
If you note a considerable wear during the first inspection, so that a change of the spider
would be recommended, please find out the cause according to the table „Breakdowns“, as
far as possible.
The maintenance intervals must be adjusted according to the changed operating
parameters.
II 2GD c IIC
T4, T5, T6
A checking of the circumferential backlash and a visual check of the flexible spider must be
effected after 2,000 operating hours for the first time, after 3 months at the latest.
If you note an unconsiderable or no wear at the spider after this first inspection, the further
inspections can be effected, in case of the same operating parameters, respectively after
4,000 operating hours or after 12 months at the latest.
If you note a considerable wear during the first inspection, so that a change of the spider
would be recommended, please find out the cause according to the table „Breakdowns“, as
far as possible.
The maintenance intervals must be adjusted according to the changed operating
parameters.
Hub types 1.1, 2.0, 2.5, 2.8, 7.5 and 7.8 (without feather key) may only be used in category 3.
ROTEX
®
GS backlash-free shaft coupling
Illustration 27: ROTEX
®
GS backlash-free shaft coupling Illustration 28: ROTEX
®
GS spider
If the drive allows, the backlash between the cams of the coupling and the flexible spider has to be measured by
means of a feeler gauge. Regardless of the inspection intervals, the spider has to be replaced immediately if the
wear limit maximum wear has been achieved.
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