Fixed Point Center Point of Total Travel
Important Things To Remember (continued)
L S
L S 2
15. In applications where lateral accelerations in excess of 1 meter/second 2 exist, in either vertical or horizontal applications, it is highly recommended that the section of carrier extending and retracting beyond the loop is properly supported on both sides to prevent the carrier system from flexing out of alignment and being damaged. 16. On extended long travel applications, when using a guide channel system, be absolutely certain that the guide channel sections are properly aligned end to end, with no impact points or misalignments. 17. Never raise the extended half of the gliding channel section above the applicable link height. This will cause an impact point ultimately leading to system fatigue, damage, or catastrophic failure. 18. On high speed (> 10M/Sec² and >10M/Sec) applications where the carrier system is in a self- supporting mode, for proper operation and to prevent “hopping” during the retracting mode, angle the driven end connection toward the loop-diameter center line 2° to 3° to give the carrier a slight pre-tension. 19. On heavy and/or extended travel plastic carrier systems with accelerations and speeds in excess of 1 meter/second 2 and 1 meter/second respectively, it is recommended that the moving end ( ME ) mounting height be lowered equal to 3 x the applicable link height. When this recommendation is applied, care should be taken to either extend the depot 8 x the KR and overall carrier length 16 x the KR to allow for the elasticity factor ( tB ) or to extend the depot 3 x the KR and add enough reverse bend radii ( RKR ) links to mechanically lower the moving-end mounting height equal to 3 times the link height.
L B
Moving End
15
Fixed Point
Center Point of Total Travel
L S
L S 2
Moving End
L B
† B
L S
L S 2
Fixed Point Center Point of Total Travel
Moving End
L B
Fixed Point Center Point of Total Travel
19
L S
L S 2
L B
Moving End
Fixed Point
Center Point of Total Travel
20. Operating Modes:
20
a.) Self-Supporting (no sag) When the carrier fully “bridges” the span between the top of the loop and the moving end in the extended mode without sag due to the system content’s weight - this operating mode is RECOMMENDED. b.) Permissible Sag When the system content’s weight (or “applied-load”) and extended length span forces the system to sag up to 50% of the loop diameter once fully extended - 50% of the loop diameter sag is the maximum recommended in this operating mode. c.) Critical Sag When the system content’s weight and extended length span forces the system to sag more than 50% and up to 90% once fully extended - this operating mode is not recommended without using a KabelSchlepp designed carrier system guide channel with a reduced mounting height. Note: you can also solve critical sag problems by selecting a sturdier carrier type and style that doesn’t have critical sag at the required self-supporting length. d.) Gliding When the system content’s weight together with the extended length force the system to sag all the way down onto itself or the running surface prior to being fully extended - this operating mode is RECOMMENDED only when a KabelSchlepp designed guide channel is to be used!
a
carrier self-supporting w/ no sag
< 50%
† B
L S
L S 2
Moving End
b
L B
carrier with permissible sag
Fixed Point Center Point of Total Travel
> 50%
c
carrier with critical sag
d
carrier gliding on itself
21. Never grab, hang and/or step on any carrier system irrespective if the system is constructed from nylon or steel, especially when machinery is powered-up.
Specifications are subject to change without notice. KSA-0810-GC
2.38
Made with FlippingBook Digital Proposal Creator