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Linear Units with Ball Screw feed Axis 
LES 3 (Double-Track Lifting Unit) 
Ball Screw Feed Axis
- precision feed units L 300, W 175 und H 88 mm
- precision lifting unit L 300 x W 175 x H 88 mm
- stroke clearance-free, max. 70 mm, with stepping motor
- NC coupling via a 15-pole amphenol plug on the stepping motor
- ball spindle drive, 16 x 5 mm, with two flange bearings
- repeatability ± 0.1 mm (reproducibility)
- clamping surface L 220 x W 175 x H 8 mm with holes
- face-milled surfaces, accuracy < 0.05 mm
- great stiffness and capacity due to eight linear bearings
- lip seal with teflon coat
- limit and/or reference position at 5 mm pitch > 0.0125 mm
- The double-track lifting unit from isel is available in closed design with ball screw drive and stepping motor drive.
The lifting unit consists of a rectangular aluminium profile (L 300 x W 175 x H 30 mm) with two double-track feed guides. On the top of it, a clearance-free and torsion-resistant precision feed with eight clearance-free linear ball bearings is mounted. The feed has a face-milled clamping surface (L 220 x W 175 x H 8 mm) with clamping and centre holes. Two eight-millimetre thick aluminium covers serve as fixing elements for the flange bearings and the stepping motor drive.
With regard to a vertical operation, the lifting unit is delivered with an integrated magnetic brake.
The stepping motor drive consists of a stepping motor with coupling, hand wheel and limit switch. The stepping motor drives a clearance-free ball screw drive (16 x 5 mm) with a repeatability of ± 0,01mm mm (reproducibility).
The maximum torque (approx. 1 Nm) and the maximum speed (approx. 250 mm/s) depend on the applied stepping motor.
Options:
pitches: 2,5 and 4 mm
Copyright © 2009 Micromech Ltd. All rights reserved.
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