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Easily Download Models & Pricing Tools

March 14, 2018

Lintech is known for an easily maneuverable website. When working on a design project, it is very helpful to be able to quickly access ballpark costing as well as dropping product models into a design to determine suitability.

Modeling & Pricing Toolds

Lintech enables the designer to work through this process simply and quickly. No need to play telephone tag to get costing answers or long, drawn out steps to obtain models. Lintech offers a huge selection of standard options as well as the ability to further customize a linear table if needed. That “further customization” process is NOT challenging and will NOT cause the lead-time to extend over the horizon.

Go to first when designing a linear motion table.


Precise Motion Linear Tables

March 2, 2018

Lintech considers itself to be manufacturer of medium to higher precision linear tables. Some manufacturers are capable of positioning within a few thousandths of an inch. On the other end of the spectrum are manufacturers that position to sub-micron levels. Lintech falls in the middle of this range. Attached is a table which represents the general accuracy capabilities of their “higher end” tables.

200 Series Accuracy Specifications

It is possible to push the envelope on some specifications, but that would need to be evaluated by their engineering department on a case by case basis. So, although Lintech is capable of some pretty extreme tolerances, some customer requirements call for even better.

When specifying a table, determining if accuracy capabilities are sufficient is only a piece of the information needed. Speed requirements, load, travel, environment, resolution and a variety of other considerations must be evaluated to arrive at the appropriate solution.

To help determine the appropriate solution for your linear motion requirement, contact Lintech at

Multi-Axis Mounting Configurations

February 15, 2018

Lintech provides the mounting brackets to mount multiple axes together in an assortment of configurations. In some cases one table can be mounted directly on top of another. However, often some sort of intermediate bracket is required in order to obtain the necessary orientation.

Since Lintech tables are used for high precision and significantly loaded applications, the brackets for different mounting arrangements need to be very strong and very accurate, not just a plate to which the tables can be attached. Hence, they represent a significant cost. Having many pre-configured standard designs allows for more efficient pricing.

Lintech will also perform the actual mounting of multiple axes to make sure all axes are aligned properly. In addition, they can also add motors, controls, switches, and etcetera, to complete the entire motion control system.

Mounting Configurations

If your company would like to “farm out” some of the expertise of building multi-axis assemblies, contact Lintech.

Custom Assemblies Are a Core Strength

January 31, 2018

Lintech designs and builds a lot of custom assemblies. Many customer specifications dictate that one of our standard tables does not offer the optimum solution to obtain the desired stiffness, speed, duty life, meeting an environmental condition, etc. So, it is best to start from scratch in these cases. Lintech has been offering custom assemblies for more than a generation and is accustomed to what is required. Some linear table manufacturers’ are best suited to standard product offerings. Lintech has had much success with customized solutions.

Success with a custom project requires many things, but good communication and a clear definition of what will be required are key components. Quite often, success requires the supplier to have some experience with associated components “outsourced” like motors, gearheads, frame structures, etc. Lintech has that experience.

X, Y, Z High Accuracy Coating

The photo represents 3 tables on a granite slab. The granite slab is supported by an aluminum frame structure. All 3 axes have servo motors which are wrapped parallel to the tables to reduce the overall table lengths.

Ball Screw Assembly Handling, Installation Tips, Mounting & Alignment

January 15, 2018

Lintech provides Service Manuals for the components and complete linear motion systems manufactured. There are some very helpful tools within the manuals. A critical process for putting a linear motion system together using individual components is the proper alignment of the screw and linear rails. If misalignment between these components is present in a linear motion, it could result in extreme overloading, high heat, increased torque/motor stalling, etc.

Attached is a segment from the Positioning Components Installation & Service Manual. There is a separate manual for the Systems which include screw driven & belt driven tables.

Ball Screw Assembly Tips and Installation

If you have questions about a particular application, please contact Lintech.

Motion Control “Accuracy” Considerations

January 3, 2018

There are some important terms pertaining to motion control positioning which sometimes get lumped together under the term accuracy.

Accuracy versus Repeatability:

Accuracy & Repeatability

Quite often, applications require good repeatability more than accuracy.

Accuracy is described as how well a positioning system makes a true relative move in reference to an absolute 3D location. In essence, if we lived in a perfect world, when a positioning system makes a 1.0 inch (25.4 mm) move, it truly moves 1.0 inches (25.4 mm). However, there are mechanical errors associated with every positioning system. These errors will cause the positioning system to be less than perfect when making moves. Move distances that will be something different than what were truly desired.

For whatever reason, sometimes specific applications may require more emphasis on “characteristics” of the accuracy within the overall move.

Yaw, Pitch, Roll, Flatness & Straightness.jpg

Linear bearing & structure inaccuracies will cause a positioning system to move something other than what is desired. LINTECH includes these errors in the overall “Position Accuracy” value described on the website and in catalogs. LINTECH also provides flatness & straightness specifications for each table series. These values can be used as a general gauge to the overall linear bearing & structural quality of a positioning table. The better these values are, results in better accuracy & repeatability of the positioning table.

Linear bearing & structure inaccuracies include:

  • angular (roll, pitch, & yaw)
  • vertical runout (flatness)
  • horizontal runout (straightness)

Some of the sources of these errors are:

  • straightness of the linear rail
  • entry & exit of recirculating balls in the linear bearings
  • variation of the preload when moving along the rails
  • contaminants between linear bearings & rails
  • machining of the rail mounting surface on the table
  • machining of the base, carriage, and other components

Inaccuracies in the linear drive mechanism of a positioning table also contribute to its overall position accuracy. LINTECH provides acme screw, ball screw, and belt driven linear positioning tables.

Linear drive mechanism sources of errors include:

  • lead error of the screw
  • end support mounting of the screw
  • nut and screw quality & wear
  • lead error of the belt
  • belt stretch
  • end pulley quality & alignment

So, it is important to consider what move characteristics are most important to the performance of each application and maybe also to clarify what is undesirable for the application in order to consider the most suitable components.

For more information on component choices, contact Lintech.

Application Example: Matching a Motor with a 180 Series Lintech BELT DRIVE Table to Meet a Performance Requirement

December 15, 2017

Let’s say that the determination has been made that the Lintech 180 series table 18412054-CP0-1-D1-M04-C130-L04-E00-B00 is suitable to perform the mechanical task for an application.

  • 18612054 – 11,670lb dynamic horizontal capacity rating for 50km of travel life, 54” of travel capability.
  • CP0 – No top or side cover plates necessary.
  • 1 – English mount inserts in the carriage for mounting the load.
  • D1 – Drive shaft/right hand single shaft
  • M04 – NEMA 34(English interface) motor mount adapter.
  • C157 – “H” type, 3 member clamp style design coupling. Bores of .375”(table side) and .500”(motor side).
  • L04 – “Reed” End-of-travel & home switches.
  • E00 – No linear or rotary encoder mounted directly on the table.
  • B00 – No “power-off” brake mounted directly to the table.

The table selection process has been omitted for our purposes. Naturally, careful thought goes into selecting the part number such that the table will meet the accuracy, load/life, environmental, and overall performance necessary for the application.

Having determined the appropriate table for the mechanical specifications, a motor package needs to be chosen which will move the application load in the desired time frame. There are many motor sizing programs available which assist with calculations. However, they require some information about the drive mechanism (belt drive in this case), load, orientation of load, speed and start/stop times.

For the 180 series table, the belt/pulley information below is found on the website (

Pulley Weight: 0.39lbs.

Pulley Diameter: 1.128 Inches

Number of Pulleys: 2

Belt weight for 54” Travel Unit: 15.8 Ounces

Breakaway Torque: < .75 oz.-in

Friction Coefficient: < .01

Load Weight: ?

Load Angle: ?

Motor Inertia: ?

Maximum Speed Desired: ?

Move Distance: ?

Acceleration Time: ?

Now, some information from the application is needed to answer the items with a “?” above. So, some assumptions will be created for this fictitious application.

Load: 80lbs.

Load Angle: Horizontal motion – “0” angle

Maximum Speed: 20”/second

Move Distance 49”

Acceleration Time: .5 seconds adequate time to get to 20”/second

At this point, the belt specifics and application requirements can be plugged into any sizing software program to determine the basic torque requirement and motor speed. However, before searching for a motor having the required torque at that motor speed, it may be a good time to step back and consider “potential” application variables. For instance, should there be a safety factor built in so the motor is not required to perform at its highest torque capability? Is there a chance that at some point down the road, the load, speed, or some other application change could occur? By the same token, having too much of a safety factor might mean that the resulting motor selection is too large and/or expensive. The safety factor chosen should be somewhat application driven. Typically, Lintech would suggest a safety factor between 25% – 100%. A 50% safety factor will be used for this fictitious application.

So, by using a 50% safety margin in the software being used in this example, the torque total maximum to move the load horizontally at 20”/second is calculated to be 237.47 oz.-in.(different software programs will calculate slightly different results). The program also calculates that the motor needs to be able to have this minimum torque available at 338.62 rpm to achieve the application linear speed. Now that the torque and motor speed have been determined while considering a safety margin, the search for a capable motor begins.

When sizing a motor to an application load and speed, it is generally assumed that an inertia ratio of less than 10:1(load:motor) is needed to perform properly. However, obtaining the 10:1 ratio often requires belt driven applications to utilize a gearhead in order to meet the ratio between the load and the motor. If a gearhead is necessary, it is best to utilize the lowest ratio which will comply with the inertia ratio target of within 10:1. The reason is that a higher gearhead ratio equals a higher motor speed to achieve the application requirement. If the motor speed requirement gets too high, motor “options” may become reduced.

It is assumed for these purposes that the choice of servo or stepper has been made along with the desired feedback, control capabilities, budget, physical size available, etc. So, the focus here is to find a motor with a suitable torque curve.

So, an inertia ratio of 10:1 will be used for the load:motor in addition to the motor having a torque curve which obviously reflects the power to move the load at the desired speed.

34HC-1 Torque Curve

Working through the sizing program, the motor above was selected. In order to meet the inertia goal, a 3:1 gearhead was incorporated with a NEMA 34 frame motor having a rotor inertia of 7.8 oz-in squared. The 3:1 gearhead reduced the torque required to 93.35 oz-in but it also tripled the motor speed necessary to reach 20 linear inches per second. Therefore, the selection required a motor to have at least 93.35 oz-in of torque at 1015.88 rpm. The red line in the graph represents about 1015.88 rpm. The different dotted lines in the graph also indicate that any of the acceptable voltages of 12, 24, 36 or 48v would offer the necessary torque at the target speed. The sizing program indicates that the inertia ratio of the load to the motor chosen is 5.92:1 which is within the 10:1 goal.

If you have more questions regarding motor sizing or would like assistance, please contact Lintech.

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