L.M76 Direct Drop-In Replacements for Linear Ball Blearings 1-800-513-3163 www.LM76.com

HIGHER SPEEDS- The design of the JET Rail Roller Bearing Pillow Block incorporates a larger "rolling" diameter than ball bearing pillow blocks. This allows operation at significantly higher speeds and acceleration than the equivalent size recirculating ball pillow blocks. SHAFT PARALLELISM - JET Rail Roller Bearing Pillow Blocks feature a "Floating Option" which will permit shafts to be out of parallelism. JET Rail Roller Bearing Pillow Blocks are the only linear motion pillow blocks with this patented option to compensate for non-parallel shafts. For instance, a 1" JET Rail Bearing can float...

Roller Bearing Pillow Blocks LM76 Linear Bearings Designed to overcome the limitations of linear bearings with multiple re-circulating ball circuits and to provide a product with trouble free operation, LM76 Roller Bearing Pillow Blocks provide the following advantages: J E T ADVANTAGES: ADJUSTMENT LM76 Roller Bearing Pillow Blocks constructed with an adjustable eccentric stud feature to allow easy radial clearance adjustment. The clearance is set at the factory for optimum shaft clearance for LM76 Bearings 60 RC shaft tolerance “B”. This shaft clearance can easily be adjusted to provide for...

JET Rail Loading Data J E T Jet Rail Rail Roller Blocks offer smooth, very quiet and solid linear motion. Their design dictates that the load fall on the top rollers which have a center radius which meets the crown of the shaft. Thus a straight and uniform compressive load is ideal for their construction. They are not designed for side loading - where the side rollers are being loaded. Nor are they to be inverted (upside down/ceiling mounted), again loading the side rollers. Since the cam follower is a needle bearing with an inner and outer race, we do not want a load scenario where the inner...

J E T R A I L Our new High Temp bearings have been used in temperatures up to 200C (398F) and incorporate a high temperature grease typically used on oven conveyors or rotisseries. Developed around a specific high temperature application for a major corporation, JET Rail HT linear roller blocks have been operating successfully for over 2 years and have outlasted the original linear ball bearings by 6:1. P/N Description JRS 8 OPN-HT Single 1/2” Roller Block JRD 8 OPN-HT Double 1/2” Roller Block JRT 8 OPN-HT Twin 1/2” Roller Block JRS 12 OPN-HT Single 3/4” Roller Block JRD 12 OPN-HT Double 3/4”...

LM76 Linear Bearings Roller Bearing Pillow Block Options SCRAPER OPTION When pillow blocks run in an environment where chips or sludge accumulate on the top of the linear shaft, select the “scraper option”. The scraper is made from spring steel – tempered phosphor bronze and conforms to the shaft diameter. A scraper is mounted to each end of the bearing assembly which cleans the top of the shaft in either direction. The “scraper option” requires a specially machined pillow block, and cannot be added as a retrofit to a pillow block originally ordered without this option. This option may temporarily...

TOP GREASE OPTION The LM76 Roller Bearing Pillow Block rollers are lubricated and sealed, but in some applications it is desired to re-grease the main support roller. The “top grease option” can help achieve full bearing life in applications that reduce or contaminant the grease inside the roller. Such Conditions may exist in applications where solvents or contaminants leach out the grease through the vents in the seals, or where contaminants are so fine or extreme that they must be purged out of the roller with fresh grease. The “top grease option” is also recommended when high speeds or extreme...

LOW SHAFT SUPPORT ASSEMBLIES C P R E C I S I O N VIEW “A” A E Y G X STANDARD LENGTH 48” B PRE-DRILLED LOW SHAFT SUPPORT RAILS VIEW “A” VIEW “B” 12° TYP. 20° TYP. MATERIAL: STEEL OR ALUMINUM Suffix for Aluminum A Suffix for Steel S VIEW “B” S H A FT DIA. SHAFT SUPPORT ASSEMB LY PREDRIL L ED SHAFT SUPPORT RAIL *PL AIN SHAFT SUPPORT RAIL A +/-.001 B C 1/2 LSRA-8 LSR-8-PD LSR-8 .562 .370 1/4 5/8 LSRA-10 LSR-10-PD LSR-10 .687 .450 5/16 3/4 LSRA-12 LSR-12-PD LSR-12 .750 .510 3/8 1 LSRA-16 LSR-16-PD LSR-16 1.000 .690 1/2 1-1/4 LSRA-20 LSR-20-PD LSR-20 1.187 .780 9/16 1-1/2 LSRA-24 LSR-24-PD LSR-24 1.375...

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LM76 Linear Motion LM-Tarbell’s modern facility in East Longmeadow Massachusetts Home of the MINUTEMAN Linear/Rotary Bearing LM-Tarbell is the combination of two internationally prominent manufacturers of sleeve bearings: J.C. Tarbell Associates Founded in 1938, J.C. Tarbell Associates was one of the first exclusive regional distributors for Chrysler’s oil impregnated bronze bearing line - a technological innovation at the time. Over the past 60 years, Tarbell has engineered this material into every product conceivable from sewing machines to jet engines. Today, Tarbell supplies engineering expertise,...