Linear Bearings – Which Type is Right for Your Application?

LM76-Difference-01

 

Compare linear bearing types and ask for a “Squadron Patch” or Poster.

 

LM76-Difference-02

 

Yes

Requires Lubrication

Yes

Yes

High Loads

No

Yes

Rapid Oscillation

No

Yes

High Acel/Decel

No

Yes

Shock/Vibration

No

Yes

Contamination

No

Yes

Special Configurations

No

Yes

FDA Compliant

No

Yes

Chemically Inert

No

No

Catastrophic Failure Mode

Yes

No

Groove Shafting ( Brinelling)

Yes

Yes

Vacuum Rated

No

Yes (400F)

High Temp

No (180F)

Yes

Linear + Rotary

No

Yes (100 million linear feet)

Life Tested

Yes (2 million linear inches)

.04 – .08 Coefficient of Friction .010 – .001

Poor Self-Alignment/Compliant Very Good

At first glance, Black Racer linear bearings wipe the floor with linear ball bearings. However, linear ball bearings provide the lowest coefficient of friction for mechanical bearings – only surpassed by air bearings. Linear ball bearings are more compliant than sleeve bearings, thus they are more forgiving in applications where shaft parallelism is not exact. Linear ball bearings offer more self-alignment capability than sleeve bearings. Although Black Racer bearings are direct drop-in re­placements for inch linear ball bearings, you should call LM76 to ensure your application is a good candidate. For more information call Mike Quinn: 1-800-513-3163 or email: mquinn@LM76.com

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Motion Control – Roller Drives Controlled by JVL MAC Motors!

Motion Control Application – The world’s largest manufacturer of motorised roller drives is now ready with the first servo-motor controlled roller drive in the world.

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Birkerød, Denmark and Morrow, OH (USA) -Motion Control – JVL Industri Elektronik and Interroll have announced that in cooperation they have developed a completely new servo-motor controlled roller drive based on JVL’s unique integrated MAC motor. The new development arose from Interroll customers’ increased requirements for roller drives that offered more precise and preferably dynamic control facilities. Interroll had met these requirements using frequency converters and, in many cases, through the use of new vector-based models, but many applications presented additional demands on other factors such as positioning, which required the use of an external encoder. Approximately 2 years ago, Interroll came up with the idea of replacing its AC motor with the JVL MAC servo-motor, not least because:

  • The price of servo motors had fallen
  • The MAC motor’s compact design meant that it could be used to replace the normal AC-motor with relatively few adjustments
  • Two acknowledged and well-proven components would be combined:
  • JVL’s MAC motor with its 5 year proven track record
  • Interroll’s 20 years of extensive experience with the design and manufacture of mechanical units

In only 3 months, JVL produced the first servo roller drive in the world, based on well tried and tested components and technology. Interroll now had a price and performance competitive alternative to the ”old” three-component solution.

The intention was to present the new innovative design to existing Interroll customers in order to “test” the concept in the real world. And the response was very positive, so after a final market analysis Interroll decided in January 2004 to beta-test IntelliDrive® (as the new addition to the family had been christened).

  • The feedback from the market was very positive:
  • Quick and easy to install
  • Very user-friendly software
  • Competitive compared to traditional solutions
  • Greatest interest in applications for packaging machines and food processing.

Based on the positive results, Interrroll decided to introduce IntelliDrive® on the market. The first IntelliDrive® units appeared in August 2004, and the first application has already been commissioned and is operational.

Interroll’s expectations of the new product are great, despite the fact that in many ways it breaks with the company’s traditional core expertise in mechanical design and construction.

Motion Control MAC Moter used in Interroll Roller Driver is from JVL

(Left)The drive unit with built-in MAC motor and gear

Experience has shown that the new technologies are very applicable to specialised machinery in particular, a fact that is currently being demonstrated with the incorporation of IntelliDrive® into numerous customers’ developments of new and performance improved machinery for various purposes. These include:

  • Automatic sowing machines – indexing
  • Simpler and cheaper
  • Meat slicing machinery – positioning
  • Greater accuracy — higher yield for end-user
  • Dynamic weighing machines — velocity and torque
  • Greater accuracy and more compact design
  • Machinery for folding bed linen — torque and positioning
  • Compact and cheaper

One new development project that merits special mention is a customer’s development of a video-controlled robot, in which the key factors are simplification and cost reduction.

The opportunities afforded by the innovative new product are numerous, and already now Interroll sees potential for the use of JVL’s larger MAC motors in Interroll’s large roller drives. The decision to implement such solutions will depend on market success of the small IntelliDrive®, which so far looks very promising.

For more information about Integrated AC Servo Motors MAC050-141 – Click here!

Motion Control - Interroll Roller Driver is from JVL

To go to Interroll homepage – Click here!

About JVL – JVL is recognized as a leader for its development of modern, compact stepper motor drivers and VAC and VDC controllers as well as MAC motor series of integrated VAC servo motors (up to 3000W), and the QuickStep integrated stepper motors (up to 25Nm). Both the servo motor and stepper motor series includes the controller and encoder integrated into one compact unit.

JVL with more than 20 years of motion control experience enjoys a reputation for the development of specialized, customized equipment. They work together with their customers and representatives to find an economic, yet technically advanced solution to complicated control applications.

JVL’s wide selection of quality products for motion control components include: Integrated VAC Servo motors, Integrated Stepper motors, VAC Servo motor controllers, VDC Servo motor controllers, Motor drivers (Stepper, VAC and VDC), Keyboard/Display (Input/Output- and Counter Modules).

 

JVL USA • Att: Mike Fisher • National Sales Manager
8610 Morrow-Rossburg Rd • Morrow • OH 45152-9444
E-mail: mfisher@jvlusa.com3/877-3134 •Tel.: 513/282-0888 (Tech Support Line) •
Fax: 513/877-2471•
For Additional Information about Mike Fisher and JVL USA – Click Here

 

USA and Canada – Reps & Distributors: – Click Here

 

All Other Countries:

Further information can be obtained from:

JVL Industri Elektronik A/S

Blorkken 42, DK 3460, Birkerød, Denmark

E-mail: jvj@jvl.dk Tel.: +45 4582 4440 ; Fax.: +45 4582 5550 ;

For JVL Home Office and World Wide Directory of Reps & Distributors Click Here

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Shimpo Drives New STH Motion Control Rotary Actuator!

Servo2Go - Motion Control Motors & Drives from AMP

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Greenville, DE –— Shimpo Drives announces its new Motion Control STH servo-driven rotary actuator. The STH is a mid-performance rotary actuator that sets a new price/performance point in rotary positioning.

A Motion Control Shimpo Able servo reducer is the interface between the servo motor and STH output actuator. The Able gearbox features simple mounting of nearly any small to medium servo motor and gives the complete STH package net ratios ranging from 12:1 through 324:1.

STH’s very large crossed roller output bearing allows for impressive thrust loads and tilting moments. A generous hollow through-bore allows wiring or tubing to be passed through to effectors, fillers, or other active machinery.

Features include:

  • 85 mm pass-through hole allows use of air lines or wiring
  • Input is compatible with most servo motor brands
  • Available ratios range from 12:1 through 324:1
  • Shipped from stock

For more information on the STH Rotary Stage series from Shimpo, click on the link below:

https://www.servo2go.com/product.php?ID=105503&cat=

For further information on this new product or others in our extensive product portfolio, call or e-mail Warren Osak at warren@servo2go.com or visit Servo2Go.com at: www.Servo2Go.com

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