5
Startup
Helical-worm gear units and SPIROPLAN® W gear units
Assembly and Operating Instructions – Gear unit series R..7, F..7, K..7, K..9, S..7, SPIROPLAN
®
W
85
5.3
Helical-worm gear units and SPIROPLAN
®
W gear units
Helical-
worm gear
units and
SPIROPLA
N® W gear
units
5.3.1
Run-in period
SPIROPLAN
®
and helical-worm gear units require a run-in period of at least 48 h be-
fore reaching their maximum efficiency. A separate run-in period applies for each di-
rection of rotation if the gear unit is operated in both directions of rotation. The table
shows the average power reduction during the run-in period.
Helical-worm gear units
Worm
i range
η reduction
1-start
Approx. 50 ... 280
About 12 %
2-start
Approx. 20 ... 75
About 6 %
3-start
Approx. 20 ... 90
About 3 %
4-start
-
-
5-start
Approx. 6 ... 25
About 3 %
6-start
Approx. 7 ... 25
About 2 %
SPIROPLAN
®
gear units
W10 / W20 / W30
W37 / W47
i range
η reduction
i range
η reduction
Approx. 35 ... 75
About 15 %
Approx. 20 ... 35
About 10 %
Approx. 10 ... 20
About 8 %
Approx. 30...70
About 8 %
About 8
About 5 %
Approx. 10 ... 30
About 5%
About 6
About 3 %
Approx. 3...10
About 3%
5.4
Helical/parallel shaft helical/helical-bevel gear units
No special startup instructions are required for helical, parallel shaft helical and heli-
cal-bevel gear units providing the gear units have been installed in accordance with
section "Mechanical Installation" (
→
21932786/EN – 05/2015