The technology of decoupling devices is standard in all ball screw driven PMT 160 series stages from Steinmeyer. The PMT 160 offers travels from 50 mm to 300 mm, with standard positioning accuracy of less than 10 µm and repeatability of +/- 0.5 µm when driven by either dc servomotor (with rotary encoder) or dc stepper motor. Higher accuracies are possible through the use of linear encoders. The PMT series stages can be customized for vacuum and/or cleanroom operations as well. Production proven in thousands of units, they are ideal for applications in semiconductor, inspection, micromachining and other areas where high precision is critical to the application.
Precision Hybrid Ball Screws with Ceramic Balls by Steinmeyer
Posted Jul 24 2008
Filed under: Ball Screw Bearings
Steinmeyer, Inc. offers a new option to its standard line of precision ball screw products - hybrid ball screws using ceramic rolling elements. By using balls manufactured from silicon nitride instead of tool steel Steinmeyer is able to eliminate micro-welding in the ball nut. The major benefits include longer lifetime, lower friction and less lubricant required.
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New Precision Aerospace Grade Actuator Ball Screws Offered by Steinmeyer
Posted May 22 2008
Filed under: Actuator Ball Screw
Steinmeyer, Inc. announced a new high precision line of aerospace grade ball screws. Available in several diameters ranging from an incredibly tiny 3 mm to a much larger 100 mm, these aerospace screws are all manufactured from certified materials.
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New Low Profile Linear Motor Stage by Steinmeyer
Posted Apr 30 2008
Filed under: Linear Motor Linear Stage
Steinmeyer, Inc. announced a new low profile, high precision, linear stage model LT190-EDLM. Manufactured from high strength aluminum, the table is driven by an ironless core linear motor with travel ranging from 150 mm to 500 mm. Total table height is only 50 mm.
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New Precision Vertical Stage HT 16-LM by Steinmeyer
Posted Apr 04 2008
Filed under: X-Y Positioning
Steinmeyer, Inc. offers a new vertical positioning stage manufactured by its FMD division. The model HT 16-LM offers a travel of 16 mm with resolution of 33 nanometers and accuracy of 2 microns, making it ideal for wafer positioning! A compact piezo linear motor is used to drive a 3:1 ratio wedge. Precision crossed roller bearings ensure smoothness of motion and high rigidity. Manufactured from stable aluminum alloy, the HT 16-LM weighs 5.5 kg, and can support loads up to 50 Newtons!
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New Micro Manipulator System by Steinmeyer
Posted Feb 15 2008
Filed under: Robotics X-Y Positioning
Burlington, MA - Steinmeyer, Inc. announced a new high precision micro manipulator stage MT 130-50-DC.
Manufactured from high strength anodized aluminum, the standard table offers travel of 50 mm with positioning accuracy of 10 µm (micrometer), straightness/flatness runnout of +/- 1µm and repeatability of +/- 1µm. With a sleek low profile design, it has a square footprint of 130 mm x 130 mm, height of 43 mm and weighs only 1.8 kg.
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New Compact X-Y Stage by Steinmeyer
Posted Dec 18 2007
Filed under: X-Y Positioning Linear Stage
Steinmeyer, Inc. announced a new high precision XY linear stage model KT 310 – 210 – DC. Manufactured from high strength anodized aluminum, the standard table offers travel of 200 mm in both axes with positioning accuracy of 5 µm (micrometer), straightness/flatness of 3 µm and repeatability of +/- 1µm. With a sleek low profile design, it has a square footprint of 310 x 310 mm, height of 80 mm and weighs only 11 kg. Features include: preloaded cross roller bearings, precision ground ball screws, limit switches, and integrated dc motors with rotary encoders. With optional linear encoders, repeatability is +/- 0.1 µm.
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New Ultraminiature Ball Screws Available in Stainless Steel
Posted Nov 27 2007
Filed under: Ball Screw
Burlington, MA - Steinmeyer, Inc. offers an important addition to its standard line of miniature precision screws – the "world's smallest commercially available stainless steel ball screw." New ULTRAMINIATURE ball screws are available in stainless steel with diameters as small as 3 millimeter with choice of two pitches – 1 millimeter or 0,5 millimeter.. Steinmeyer now offers an extensive range of miniature screws in stainless steel from 16 mm diameter (with up to 30 mm pitch), down to this incredibly tiny 3 mm diameter. These products are manufactured especially for demanding applications in clean room, high vacuum or corrosive environments, The screws are equipped with one of four types of ball nuts, with or without preload.
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Steinmeyer Offers New High Speed Ball Screws with Elastic Spacers
Filed under:
Steinmeyer, Inc. announced a significant new option to its high speed ball screw product line – the UltraSpeed KES ball nut. By incorporating spacers between the balls and plastic tubes in the recirculating channels, Steinmeyer has succeeded in producing a ball nut specifically designed for applications demanding high speed capability as well as consistent pulsation-free motion at slow speeds.
As in our UltraSpeed nuts, that are increasingly popular among machine designers where compact design and high speed capability are important, the new UltraSpeed KES has dual ball return systems with deflectors. These deflectors guide balls in a tangential direction away from the shaft and into the return channels integrated inside the nut body.
Two important features reduce friction inside this new nut. First, the redesigned ball deflectors are compatible with Steinmeyer Elastic Spacers (ES) which are located in between the balls. And second, the ball return channels include plastic tubes.
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Steinmeyer Offers Ball Screws with Elastic Spacer Technology
Filed under:
Steinmeyer, Inc. announced an important advance in ball screw technology - the use of elastic spacers to separate recirculating balls inside the nut. The primary benefit of ball nuts with elastic spacers is the ability to achieve extremely fine and slow motion consistently, for example moving a distance of one micron per second.
Intermittent, short strokes, or frequent oscillations are conditions where balls in regular ball nuts tend to back up to each other, significantly increasing inter-ball friction and idling torque, potentially causing instability in the servo loop control. This is eliminated with Steinmeyer elastic spacers. Although offered now in some linear guideways, spacers have not been readily available in ball screws due to reliability concerns.
A flexible ball chain, ...
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