igus® terms in alphabetical order

The glossary contains the most important abbreviations, terms, formulae, and pictograms having to do with energy chains.

Abbreviations		Explanation:	Unit
α	=	Angle of rotation	[°]
ΔM	=	Deviation of the centre point	[mm]
a	=	Acceleration	[m/s²]
AR	=	Outer radius, e-chains® (for twisterchain)	[mm]
Ba	=	e-chain® outer width	[mm]
Bi	=	e-chain® inner width	[mm]
B_Ra	=	Guide trough outer width	[mm]
B_Ri	=	Guide trough inner width	[mm]
D	=	Over length e-chain® radius in final position	[mm]
D₂	=	Over length for long travels gliding	[mm]
FL_B	=	Unsupported length with sag	[m]
FL_G	=	Unsupported straight length	[m]
FL_U	=	Unsupported lower run	[m]
FL_P	=	Projected unsupported length [m]	[m]
FL₉₀	=	Side-mounted applications [m]	[m]
FZ_max	=	Maximum fill weight	[kg/m]
H	=	Nominal clearance height	[mm]
H₂	=	Clearance height with lowered moving end	[mm]
ha	=	Outer e-chain® height	[mm]
H_F	=	Required clearance height	[mm]
hi	=	inner e-chain® height	[mm]
H_Ra	=	Outer trough height	[mm]
H_Ri	=	Inner trough height	[mm]
IR	=	Inner radius e-chain®	[mm]
K	=	Add-on for bend radius (K is taken from the data tables of the individual series)	[mm]
K₂	=	Add-on for bend radius if the mounting point is lowered (for long travels)	[mm]
L_K	=	e-chain® length	[mm]
n	=	Number of links	[1]
n_Mon	=	Number of installation sets (left/right)	[1]
n_Ri	=	Number of trough sets (left/right)	[1]
R	=	Bend radius	[mm]
RBR	=	Reverse Bend Radius	[mm]
S	=	Travel	[mm]
S/2	=	Half length of travel	[mm]
T	=	e-chain® pitch	[mm]
v	=	Speed	[m/s]
X₁	=	Inner machine limit (twisterchain)	[mm]
X₂	=	e-chain® outer radius, including clearance	[mm]

Formula		Description
SFL_B = 2 * FL_B	=	Calculation of maximum travel length, unsupported with sag
SFL_G = 2 * FL_G	=	Calculation of maximum travel length, unsupported straight
B_RI ≥ Ba + 5	=	Calculation of the minimum guide trough width
H_RI ≥ 2 * ha	=	Minimum height of guide channel on gliding application
K = R * π + (2 x T)	=	Add-on for bending radius
L_K = S/2 + ΔM + K	=	e-chain® length, fixed end outside the center of the travel distance (on FL_G, FL_B and ΔM)
L_K = S/2 + K	=	e-chain® length, all installation types, fixed end in the center of the travel distance, except circular motions and most long travel distances (on FL_G, FL_B) [m]
L_K = S/2 + K₂	=	Calculation of chain lengths for long travels, fixed end in the center of travel