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igus® do Brasil Ltda

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BR(PT)

drylin® T - System design, vertical, 1 rail and 1 carriage

2nd Step:

Check whether the clearances of the aggressive forces lie within the permitted values (see Maximum permitted clearances).

Maximum permitted clearances:

Option: 1 rail, 1 carriage
sy + sz	<	2 Lx - Y0
ay + az	<	2 Lx - Y0
sy	<	5 Zm
sz	<	5 Zm

3rd Step:

Calculate the required driving power

Initially four calculations should be carried out:

The driving power Fa corresponds to the calculated maximum value:

4th Step:

Calculate the maximum bearing load

4.1

Maximum bearing load in y-direction

4.2

Maximum bearing load in z-direction

A = Point of origin

Variables in the calculation:

Fa:	Driving power	[N]
Fs:	Mass force	[N]
Fy, Fz:	Bearing load in y- or z-direction	[N]
sx, sy, sz:	Clearance of the mass force in x-, y- or z-direction	[mm]
ay, az:	Clearance of the driving power in y- or z-direction	[mm]
wx:	Clearance of the carriage on a rail	[mm]
LX:	Constant based on the installation size	[mm]
Zm:	Constant based on the installation size	[mm]
Y0:	Constant based on the installation size	[mm]
b:	Clearance of the guide rails	[mm]
µ:	Coefficient of friction, µ = 0 in static loads, µ = 0.2 in dynamic loads
ZW:	Number of carriages per rail

The constant values:

Order no.	LX	ZM	Y0
	[mm]	[mm]	[mm]
TW-01-15	29	16	11,5
TW-01-20	35	23	15,0
TW-01-25	41	25	19,0
TW-01-30	49	29	21,5

Coefficients:

	1 rail, 1 carriages
K₁	\|(ay+Y0)/Lx\|
K₂	(sy+Y0)/Lx
K₃	\|az/Lx\|
K₄	\|sx/Lx\|
K₅	sz/Lx
K₆	\|(sy+Y0)/Zm\|
K₇	\|sz/Zm\|

5th Step:

Check the maximum bearing load of the most strongly stressed bearing with the calculated load in Step No. 4.

Maximum permitted load:

Order no.	Fymax, Fzmax [N]
TW-01-15	2000
TW-01-20	3700
TW-01-25	5000
TW-01-30	7000

6th Step:

Determination of the maximum permitted speed for the load in Step No. 4

Diagram for the determination of the maximum permitted speed for the determined bearing load.
X = centric bearing load [N]
Y = permitted mean velocity [m/s]