Quality Vision International

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AG SlidesAG Slides are recognized around the world for their superior linear positioning. Automation Gages Inc. was founded in 1956 to specialize in the design and manufacture of fixtures and special machines used for optical gaging. AG Slides is a division of Quality Vision International, the world leader in vision measurement systems.

AG Slides offers a line of precision ball and roller slides for the OEM and design engineering markets. Both standard and custom designed slides are available. Engineers around the world have come to rely on AG Slides for precise, reliable performance and high quality.

Technology

AG linear motion products use either ball slide or crossed roller slide bearings. Although both offer long life and precision motion, there are some important differences.

AG Slides Ball Slides
Ball Slides


Ball slides are self-cleaning, since the point contact tends to "push away" dirt and debris

Ball slides are lower in cost

AG ball slides incorporate the bearing ways into both the base and carriage. V-ways are formed by four round rods, two in each bearing way. Precision steel ball bearings are pre-loaded against the rods, creating four point contact.

 

AG Slides Crossed Roller Slides
Crossed Roller Slides

AG roller slides are similarly constructed. However, the V-ways are formed by four partially flatted rods. Precision steel roller bearings, alternately placed and rotated 90°, are pre-loaded against the rods.

Since the rods are free to rotate, they will self-align with the rollers, assuring perfect line contact

The increased contact area enables roller slides to carry increased loads and withstand higher cycling rates.

Products

J-Series Ball Slides

AG J Series Ball Slides incorporate all of the features and construction used in our Ironman slides in a smaller, shorter travel, linear slide. Their compact design and light weight make the J Series ideal for instrumentation applications.

Our exclusive wedge adjustment provides the most precise, yet easy-to-use pre-load adjustment in the industry.

AG Slides J and J1

The following information is for the J-Series Ball Slides model J.

TravelLoadMaterialFinish
0.5"2.0 lbsAluminumClear Anodize
AccuracyRepeatabilityAB
within 0.0001/in0.00005"1.56"1.56"
CD
1.25"1.25"

The following information is for the J-Series Ball Slides model J-1.

TravelLoadMaterialFinish
1"2.0 lbsAluminumBlack Anodize
AccuracyRepeatabilityAB
within 0.0001/in0.00005"2.00"2.00"
CD
1.687"1.687"

 AG Slides CJ1

The following information is for the J-Series Ball Slides model CJ-1.

TravelLoadMaterialFinish
1"3.0 lbsAluminumBlack Anodize
AccuracyRepeatabilityAB
within 0.0001/in0.00005"2.50"2.50"
CD
1.75"1.75"

 

Service

Ball Slide Repair

AG Slides
Disassembly

1. Provide a confined work area, such as a tray or box cover, to prevent the loss of ball bearings or other components.

Lay the slide flat inside the box/tray with the base plate up and the wedge adjusting screws to the far side.

Back off pre-load adjusting screw marked "T" at left end of slide, then screw in the adjusting screw at right end (either marked "L" or unmarked).

Remove end stop at right end of tag side. Slowly push base plate outward to the right (some assemblies require noticeable force to completely remove the base plate). The ball bearings, keeper, and finally the rods, will fall out.
AG Slides
Reassembly

1. Clean all components and ensure all are accounted for. Quantity of ball bearings will vary depending on model.

Be sure tapered wedge is in the same released position as when disassembled
AG Slides2. Place carriage on edge with tag side up and support with a block.
AG Slides3. Place two (2) of the short rods in lower groove of carriage. Place ball keeper over the rods. Put half of the balls in the ball keeper. Press downwards on end balls to be sure that rods are separated to extreme edge of groove.
AG Slides4. Hold base plate with forefingers on tapered wedge side and place two of the longer rods in opposite groove. Use the thumbs of each hand to hold the rods separated in groove.
AG Slides5. Carefully position the base plate into the carriage so that the rods straddle the balls previously placed in the ball keeper. Use thumb and forefinger to keep base plate from falling out.
AG Slides6. Slide base plate right until it extends out of carriage approximately 1".
AG Slides7. Insert remaining long rods in base plate and separate to bear against the side of groove.
AG Slides8. Start feeding ball keeper into position and insert remaining balls in keeper. Push keeper and balls flush with end of sliding member and push base plate in nearly flush with carriage.
AG Slides9. Carefully insert 2 remaining short rods. Use care in doing so; you will feel the rods fall into true position.

Immediately attach end stop to prevent accidental disassembly. Move base plate back and forth with slight pressure until the limits of travel are approximately equal at each end of carriage.

To pre-load, retract the unmarked wedge adjusting screw (sometimes marked "L") at right end and slowly screw in the adjusting screw ?T? at left. Move the base plate back and forth continuously during the pre-load adjustment. Continue adjusting until the desired "feel" of action is obtained.

As final step, be sure both adjusting screws are snug against the ends of the tapered wedge.

Roller Slide Repair

AG Slides1. Provide a confined work area, such as a tray or box cover, to prevent the loss of roller bearings or other components.

Lay the slide flat with the base plate up and the wedge adjusting screws to the far side.

Back off pre-load adjusting screw marked "T" at left end of slide, then screw in the adjusting screw at right end (either marked "L" or unmarked).

Remove end stop at right end of tag side. Slowly push base plate outward to the right (some assemblies require noticeable force to completely remove the base plate). The ball bearings, keeper, and finally the rods will fall out.
AG Slides
Reassembly

1. Clean all components and ensure all are accounted for. Quantity of ball bearings will vary depending on model.

Be sure tapered wedge is in the same released position as when disassembled
AG Slides2. Place sliding member on edge with tag side up and support with a block.
AG Slides3. Place two (2) of the short rods in lower groove of sliding member. Place roller keeper over the rods. Insert rollers into keeper. Be sure that each successive roller is alternated 90° with the previous one. Press downwards on end rollers to be sure that rods are separated to extreme edge of groove and that rollers are bearing on flatted area of rods
AG Slides4. Hold base plate with forefingers on tapered wedge side and place two of the longer rods in opposite groove. To keep the rods properly oriented in the base plate, place a roller on edge in one end of the rods and hold firmly with thumb. This will keep the flats aligned to the rollers already placed in the sliding member.
AG Slides5. Carefully position the base plate into the sliding member so that the rods straddle the rollers previously placed in the roller keeper with rollers bearing on flatted side of rods. At this time, simply allow the extra roller to fall into the work tray. Use thumb and forefinger of left hand to keep base plate from falling outward.
AG Slides6. Slide base plate right until it extends out of sliding member approximately 1".
AG Slides7. Insert two (2) remaining long rods in base plate and separate so round side of rods bear against the side of groove.
AG Slides8. Start feeding roller keeper into position and insert remaining rollers in each keeper hole. Make sure that each roller is 90° offset from previous one. Push keeper and rollers flush with end of sliding member and push base plate in nearly flush with sliding member.
AG Slides9. Carefully insert the remaining short rods. Use care in doing so to be sure that the rollers bear on flatted side of each rod. You will feel the rods fall into position.

Immediately attach end stop to prevent accidental disassembly. Move base plate back and forth with slight pressure until the limits of travel are approximately equal at each end of sliding member.

To pre-load, retract the unmarked wedge adjusting screw (sometimes marked "L") at right end and slowly screw in the adjusting screw "T" at left. Move the base plate back and forth continuously during the pre-load adjustment. Continue adjusting until the desired "feel" of action is obtained.

As final step, be sure both adjusting screws are snug against the ends of the tapered wedge.

Specifications

Rated Life Cycle

The useful life of a slide is given by the following formula.

AG Slides Life Cycle Tech Formula

* The rated load capacity shown in the technical specifications for each slide is the load for which the slide will achieve an L10 life of 10 million inches when the speed factor, temperature factor, and load type factor are all equal to 1.

  • L = life of slide (total travel in inches) 
  • fr = reliability factor (from above table)
  • C = rated load capacity (in pounds)* 
  • fs = speed factor
  • ft = temperature factor
  • Pc = calculated effective load (in pounds)
  • fw = load type factor
  • m = constant (3 for ball slides; 10/3 for roller slides)

How long a ball or roller slide will last under operational conditions depends on many factors. It is customary to allow for variation between samples of the same slide by using the L10 life rating. In this case, the rated life is defined as the total travel (in linear units) that 90% of the same model slide will complete before the first failure. However, the useful life can be calculated for other reliability values as shown by the following table:

Reliability"L" RatingReliability Factor
99L1.21
97L3.44
95L5.62
90L101.00

 Coefficient of Friction

The average values for the coefficient of friction are as follows:

  • Static Friction: 0.0005
  • Sliding Friction: 0.0003

Specifications and Tolerances

Unless otherwise indicated, the following tolerances are held on the dimensions shown below:

Accuracy and Repeatability

Linear straightness accuracy and positioning repeatability are given for each linear motion slide.

Linear straightness accuracy is a composite specification covering deviation from true straight travel in any plane, horizontal or vertical, and is generally measured by use of a gage or electronic indicator, mounted on the moving member of the slide, against a master straightedge or parallel.

Position repeatability is defined as the ability of the slide to repeat the error profile resulting from the measurements described above.

Dimensions in inches

  • Two (2) place decimal ± 0.01
  • Three (3) place decimal ± 0.005

Dimensions in millimeters

  • One (1) place decimal ± 0.5
  • Two (2) place decimal ± 0.05

Contact

QVI
850 Hudson Ave.
Rochester, NY 14621
Sales: agslides@qvii.com
Service: agslides@qvii.com
Toll Free: 800-922-0329
Fax: 585-544-4998
Direct: 585-544-2067