Bahr Modultechnik - Bahr Modultechnik - (Version JPG) - Page n° 20 - PDF Catalogue | Technical Documentation

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Linear unit, Linear module, Linear guide, Positioner, Guide

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Positioning system ELT/ELK 30, 40, 60, 80, 80S, 100, 125

Specifications

Spindle driven with trapezoidal- or ballscrew spindle

Function:

This linear unit consists of an aluminium hollow section with integral, parallel ground and hardened steel guide rods. The carriage has play-adjustable ball-bearing rollers which engage with the guide rods. The rotating ballscrew causes linear motion of the ballnut, which is connected to the carriage. The slot necessary for this is covered by a stainless steel strip, making the unit dust - and splash-proof. Lateral adjustment of movement for parallel units, or when two carriages are mounted on one unit, is provided by the ballnut mounting.

Fitting position: As required, max. length 3.000 mm Carriage mounting: By T-slots and tapped holes

Unit mounting: By T-slots and tapped holes in the mounting surfaces.


Size	EL 30		EL 40		EL 60		EL 80		EL 80S		EL 100		EL 125
Forces/Torques	static	dyna.	static	dyna.	static	dyna.	static	dyna.	static	dyna.	static	dyna.	static	dyna.
F_x (N)	750	600	1500	1200	2500	2000	5000	4000	5000	4000	10000	8000	15000	12000
F (N)	90	60	1200	700	3000	2000	3000	2000	4600	3600	8000	6500	12000	9000
F_z (N)	90	60	900	650	1700	1100	1700	1100	3000	1800	3600	2200	6000	4500
M_x (Nm)	12	10	25	20	67	43	90	55	170	140	300	230	600	450
M (Nm) ^y	12	10	32	18	90	70	110	80	270	230	400	270	750	600
M_z (Nm)	15	12	35	25	120	100	150	120	300	220	750	500	1350	1150
All forces and to existing values values of table	rques relate to the following: Fy + Fz + Mx + My + Mz							<1
All forces and to existing values values of table	Fydyn ^Fzdyn ^Mxdyn ^Mydyn ^Mzdyn							<1
No-load torque
Trapezoidal thread	10x3		18x4/1 8x8		24x5/24x10		28x5/28x10		28x5/28x10		32x6/32x12		40x7/40x14
(Nm)	0,3		0,4/0,5		0,6/0,8		0,8/1,0		0,8/1,0		0,9/1,1		1,2/1,4
Ballscrew	8x2,5		16x5/16x10		25x5/25x10		32x5/32x10		32x5/32x10		32x5/32x10		40x10/40x20
(Nm)	0,15		0,2/0,4		0,4/0,6		0,6/0,8		0,6/0,8		0,7/0,9		1,0/1,2
Geometrical moments of inertia of aluminium profile
l_x mm⁴	4,09x10⁴		1,32x10⁵		6,79x10⁵		18,99x10⁵		18,99x10⁵		44,4x10⁵		101,5x10⁵
l mm⁴ ^y	4,00x10⁴		1,34x10⁵		6,97x10⁵		18,97x10⁵		18,97x10⁵		44,8x10⁵		101,5x10⁵
E-Modulus N/mm²	70000		70000		70000		70000		70000		70000		70000

Forces and torques

For life-time calculation of rollers use our CD-ROM or homepage!

Formula: ELT/K

Driving torque: F*p*s ^Ma= 2000* ** u^+M'^e

^Pa" 9550


F	_ force	(N)	Efficiency of lead	screws:		_f _ FL³ p- E\|*192 ^---—
P	_ thread pitch	(mm)	A'' ballscrew	0.900
S,	_ safety factor 1,2 ... 2		Tr 10x3 0.375	Tr 32x6	0.360	f _def'ection	(mm)
M_leer	_ no-'oad torque	(Nm)	Tr 18x4 0.399	Tr 32x12	0.524	F _'oad	(N)
n	_ rpm of screw	(min^-1)	Tr 18x8 0.565	Tr 40x7	0.344	L _free 'ength	(mm)
M_a	_ driving torque	(Nm)	Tr 24x5 0.384	Tr 40x14	0.509	E _e'astic modu'us 70000	(N/mm²)
	_ screw efficiency		Tr 24x10 0.550			\| _second moment of area	(mm⁴)
	_ motor power	(KW)	Tr 28x5 0.349
	_ motor power		Tr 28x10 0.513

The diagram for critical speeds of lead screws refer to chapter 5.2 page 3

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Bahr Modultechnik - Bahr Modultechnik - #20

Linear unit, Linear module, Linear guide, Positioner, Guide