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Shaft Assemblies (TRSA) & Carriage Assemblies (TRCA)

July 15, 2019

Lintech provides both single and dual, precision round rail steel shaft assemblies. These shaft assemblies have a precision machined 6061-T6 aluminum black anodized base that runs the entire length of the shaft which not only supports the user load as it moves along the shaft, but the support also has pre-drilled base mounting holes that allow for easy customer mounting to a machines’ frame. The shaft straightness specifications 0.001/0.002 in/ft. cumulative. Shaft diameters are available from 0.500 to 2.0 inches in 6 to 192-inch standard lengths. Some standard sizes can be shipped in less than 2 days, while any length can be provided as a custom in as little as 1 week.

P_TRSA

The TRCA series is a pre-engineered carriage assembly which has either SLBO or DLBO pillow blocks mounted to a 6061-T6 black anodized precision machined aluminum plate. The pillow blocks are doweled to the carriage plate and are pre-aligned to match Lintech’s TRSA series shaft assemblies. The use of a TRCA carriage assembly and a TRSA shaft assembly in a mechanical positioning application greatly reduces the time-consuming process of mounting & aligning two shafts and pillow blocks. Each carriage surface is precision machined which allows for accurate mounting of customer loads. Also, carriage assemblies are available with pre-machined stainless-steel inserts, which allows easy mounting of customer loads to the carriage plate. Carriages are provided with pillow blocks for shaft diameters from ½ to 2 inches and come in standard carriage lengths from 6 to 30 inches.

P_TRCA

 

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Miniature Linear Guides

July 1, 2019

MR

The MR series is a miniature 2 row re-circulating profile rail linear guide bearing. The block and LM linear profile rail are made from 440c stainless steel and there is an option for seals on both ends of the block and on the bottom of the block. There is also an option for a self-lubrication block and another for a reinforced block seal which allows the block to move at a higher rate of speed. Three different accuracy grades are available – N grade, H grade, and P grade. The blocks are available in either a standard or long length, while the rail width is available in a normal or wide version. These various sizes allow for different block load capacities.

Screw driven tables – Maximum Speeds

June 14, 2019

Screw driven linear motion tables secure the screw at each end with different types of end supports. The screw is also held in place where it is driving the carriage. As high rotational speeds reach the natural frequency of the screw, they cause it to vibrate and whip. Every linear table will have a maximum safe operating speed which is dependent upon the screw diameter, lead and length. It is also impacted by the ball screw supports.

Below is an example of a group of Lintech tables reflecting maximum speeds. The foot note at the bottom also reflects the basic factors affecting speed potential.

Ball Screw Max Speeds

If we are not talking about a standard Lintech table, Lintech also offers a tool to help determine the screw maximum(critical) speed. On the right-hand side of the Lintech home page there is an area with a link called “sizing apps”. On that page, there is a link to “critical speed”. There you will find a calculator that enables you to plug-in numbers for screw variations and come up with the maximum safe speed.

Critical Speed

For further information on screw speeds or any other design criteria, please contact Lintech.

 

Lintech

June 3, 2019

mechanical motion

Lintech Offers Rotary Tables

May 15, 2019

Lintech is more commonly known to manufacture linear positioning tables. However, there are 2 rotary table series for precision rotary positioning along with relatively high capacity.

300 Series:

300-blue-100  300 series features

The 300 series tables utilize a preloaded pair of angular contact bearings which produce very smooth tabletop rotation. The tables have low backlash and provides exceptional accuracy and repeatability. There is also a ¾” through hole in the center enabling access from below.

400 Series:

Rotary Series  400 series features

The 400 series tables utilize a pair of 4-point contact precision radial bearings which produce smooth rotation but also more than 4X the capacity of the 300 series table. It is very compact for that capacity. The through hole at 4.5” is larger than the 300 series and the table also has very low backlash, accuracy and repeatability.

550 Series Belt Drive

May 1, 2019

550 Features & Benefits

Steps To Obtain 3D Models

April 15, 2019

The process is always a little different to obtain 3D models depending upon who’s software is being used. To save and download a Lintech model, the process is as follows:

The first step is to configure the product in a way that suits you requirement. In the example below, we’ll build a 550 series belt drive table. A 48” travel table has been configured. Once the product has been configured, select “Generate” and the part will soon appear to the right.

Generate

If you are satisfied with the way it was configured, you can begin to download it by clicking on “Download CAD File”.

Download 3D Model

After clicking on “Download CAD File”, you will be presented with a screen asking for the file format desired and if a 2D or 3D model is preferred. Select your choice.

3D Formats

The next screen prompts you to either left click(download) or right click(save as). Move your curser to the area asking for left or right click and make your choice. In the example, left click was chosen and the file created shows up on the bottom left of the screen indicating it has been downloaded to your computer.

Save As

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