Super Smart Ball Bushing Bearing - Hollin Applications

EngineeringApplication TipsTwo Ball Bushing* Bearings per 60 Case* LinearRace*When using the Super Smart, Super or Precision Steel BallBushing bearing it is recommended that two Ball Bushingsbearings be used on each 60 Case LinearRace. This will assuresystem stability as well optimum performance. If envelopeconstraints prohibit the use of two Ball Bushing bearings per60 Case LinearRace contact application engineering.Ball Bushing Bearing Spacing vs. 60 Case LinearRaceSpacingIn parallel 60 Case LinearRace applications, the ratio of 60 CaseLinearRace spacing to Ball Bushing bearing spacing shouldalways be less than three to one. This will assure a constantbreakaway and operating friction.60 Case LinearRace ParallelismIn most applications the maximum acceptable out ofparallelism condition is .001 inch over the entire full systemlength. In applications where preload is present (such as whenusing Die Set Ball Bushing bearings) a closer 60 CaseLinearRace parallelism is recommended.Three or More Parallel 60 Case LinearRace waysWhen aligning two 60 Case LinearRace ways parallel great careis required to assure a parallelism within .001 inch over theentire length of travel. When aligning multiple 60 CaseLinearRace ways, parallelism between each 60 CaseLinearRace should be held within the .001 inch specification.Measuring 60 Case LinearRace AlignmentMethods for establishing or checking 60 Case LinearRacestraightness and parallelism depends on the accuracy required.Lasers, collimator or alignment telescopes can be used for veryprecise applications, while accurate levels, straight edges,micrometers and indicators will suffice for the majority of applicationswhich have less stringent accuracy requirements.Installation of Super and Precision Steel Adjustable TypeBall Bushing BearingsWhen installing a Super Ball Bushing bearing into a slottedadjustable housing, the bearing plate should not align with theadjustment slot. When installing a Precision Steel AdjustableType Ball Bushing bearing into a slotted adjustable housing, thebearing adjustment slot should be 90º to the pillow blockadjustment slot. These important steps will assure accuratebearing adjustment.Access for LubricationThomson Super Smart and Super Ball Bushing Pillow Blocksare equipped with either an oil lubrication fitting or a 1 ⁄4-28access for lubrication. To use the oil fitting simply insert alubrication device into the oil nipple by depressing the springloaded ball. The 1 ⁄4-28 tapped hole is a standard size for mostgrease and lubrication fittings. Simply install the lubricationfitting of your choice and it is ready for immediate use. SuperBall Bushing Pillow blocks in sizes .250 through .500 inchdiameter are equipped with oil lubrication fittings. Super BallBushing pillow blocks in sizes .625 inch and above and allSuper Smart Ball Bushing Pillow Blocks are equipped with a1 ⁄4-28 access for lubrication.Waymount Support Block for Roundway BearingInstallationStandard Waymount LinearRace Support Blocks provide60 Case LinearRace adjustment in both the horizontal andvertical direction. This product reduces installation timedramatically, while assuring precise 60 Case LinearRacealignment. This versatile design allows the Waymount supportto be mounted vertically or horizontally and in many differentRoundway bearing applications. The number of Waymounts tobe used is based on the maximum allowable 60 CaseLinearRace deflection between supports and the accuracyrequired. Ordinarily indicators, sensitive levels and straightedges are adequate for most alignment conditions.Phone: 1-800-554-8466Website: www.thomsonballbushing.comWaymount Support BlockRight/lefthand screwRough BaseVerticalAdjustmentHorizontalAdjustmentRoundWay* Bearing/60 Case LinearRaceInstallation Using GroutGrouting is a very simple method of mounting a 60 CaseLinearRace on almost any kind of surface, smooth or uneven.Grouting can also be used in conjunction with standardWaymount LinearRace support blocks or other 60 CaseLinearRace supports to obtain maximum rigidity. Dams arefastened to the bed parallel to the 60 Case LinearRace whichis then aligned with its mating 60 Case LinearRace (Figure 1).A compound, such as Thomson Waystone*, is then pouredunder and around the lower circumference of the 60 CaseLinearRace. This dries quickly forming a solid support of highcompressive strength (over 12,000 psi) without affecting theinitial straightness of the LinearRace.If the bearing arrangement permits the grout to flow substantiallyaround the circumference of the 60 Case LinearRaceand side loads are light, Waymount LinearRace supports orother hold down bolts along the length made be unnecessary(Figure 2). Just one support at each end of the 60 CaseLinearRace will usually provide final alignment and hold the60 Case Linear-Race in position for grouting. If the length todiameter ratio is large, Waymount LinearRace supportsshould be equally spaced to minimize 60 Case LinearRacedeflection. Grout should always be in direct contact with thesurface of the bed or whatever base member providesprimary rigidity and support.Figure 1Figure 2GroutGrouting DamAdjustingScrewRoughBase60 CaseLinearRaceSnap RingWasher60 Case LinearRaceGroutJam NutBoltTemporaryBracketAdjustingScrewGroutingDamRough BasePage 142©2003 Danaher Motion. Printed in the U.S.A. The specifications in this publication are believed to be accurate and reliable.However, it is the responsibility of the product user to determine the suitability of Thomson products for a specific application.While defective products will be replaced without charge if promptly returned, no liability is assumed beyond such replacement.* Trademark of Danaher Motion. DANAHER MOTION is registered in the U.S. Patent and Trademark Office and in other countries.