Micromech Offers Complete Linear Motion Solution

Micromech's Promech linear actuators from Parker are for OEM instrument manufacturers looking to speed time to market and reduce the overall installed cost for linear motion axes. Promech Series LP28 and LD28 actuators come completely assembled and tested and include linear bearings, drive screw, thrust bearings, motor mount, coupling and motor. With a travel range from 5mm to 500mm, the LP28 has several linear bearing options and a variety of leadscrew and motor size options to match the positioner to the application requirements.

This compact actuator is suitable for positioning payloads up to 4.5kg and may also be fitted with optional seal strip, home and limit sensors. The LD28 is a complete linear actuator solution that offers greater screw and motor design flexibility, enabling OEMs to pursue optimal solutions for their applications. It offers a travel range from 5mm to 300mm and is offered with a variety of options to match the actuator to application requirements.

The LD28 is also suitable for thrusting applications requiring up to 4.5kg of thrust. The LP28 has a miniature cross section of 28mm x 28mm, is designed with an optimal length-to-travel ratio, has a high-performance leadscrew drive train and re-circulating linear bearing. Some competitive miniaturised drive trains use the radial bearings in the step motor to contain the motor rotor, manage thermal expansion as the motor heats, and bear the axial loads generated by the application.

In some cases this is an acceptable practice, but may prove to be a reliability risk further down the road. The LP28's bearing design results in a highly reliable and long life positioner, said Micromech. The leadscrew options are 1mm, 3mm and 10mm, and NEMA 11 or NEMA 17 stepper motors are included as standard. Fully adjustable home and limit sensors are available and the actuators can be configured for multi-axis platforms. The design has an extruded aluminium body that provides functionality and structural strength.

Internally, the drive train is highly integrated and includes the drive screw, screw nut, independent pre-loaded thrust bearing set, shaft coupling and motor. Externally, an optional linear bearing may be used to support heavier or cantilevered payloads. Installation is performed using toe clamp mounting. Home and limit sensors, which are triggered by a magnet in the carriage assembly, may be mounted using the T-slot and are fully adjustable over travel. The LP28 is engineered for transport of small payloads over distances as short as 5mm and as long as 500mm.

The LP28 is commonly used in life sciences, medical and semiconductor equipment although it is not limited to these markets. Typical applications include transport of 0.45kg to 0.9kg payloads such as microplates, vials and small syringe pumps. In inspection applications, the LP28 can be used as a focus axis for adjusting the position of a camera, optics or payload. The LP28's light weight also makes it suitable for mobile equipment. It is available with multiple lead options to match payloads over the life of the actuator.

The LD28 is also a miniature cross section actuator 28mm x 28mm and has an independent thrust bearing set resulting in a high thrust per package size. It can have either stepper (NEMA 11 or NEMA 17) or servomotor; it has backlash compensation and a high-performance leadscrew drive train with options of 1mm, 3mm and 10mm leadscrew. Designed for OEMs needing simple positioning solutions for instrument and light industrial applications, the Promech range of positioners offers a complete positioning solution.

The LD28 is also a packaged linear actuator having all the same 'completeness' attributes as the LP28 being fully assembled and tested. The Promech LD28 is engineered for thrusting small payloads over distances as short as 5mm and as long as 300mm. In addition to the standard configurations, the LD28 actuators can be customised to address the unique requirements of a particular high-volume application. These modifications may further reduce the installed cost and can include special motors (stepper, servo or DC), motors fitted with rotary encoders, special screws (finer leads, ballscrews, special nuts), and environmental preparation (vacuum, high temperature).

Here again the LD28 is commonly used in life sciences, medical and semiconductor equipment, although it is not limited to these markets. Typical applications include syringe pumps and positioning stages and its light weight makes it suitable for mobile equipment.

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more