Catalog: Ball Screws
Company/Brand: RBC Bearings
design of lead screw in Ball Screws by RBC Bearings
bearings rbc has had a long tradition of innovation commitment and quality since ... grown into a world-class manufacturer of standard and custom-engineered bearings ... on research testing and development of the best product for specific ... precision ground and rolled ball screws rbc precision ball screws offer high ... and smooth operation is the result of precision processing assembly and ... in preloaded rbc precision ball screws rbc precision ball screws are available ... in a wide range of materials with numerous options to ... from either precision ground ball screws in either inch or metric sizes ... the application rbc will supply a ball screw with either internal or external ball ... are all available produced with short lead times to minimize downtime many ... material handling transportation and off-highway equipment robotics and automation ...

table of contents pages 1 rbc ball screws 4-5 1.1 classification of ball screws 1 ... .2 standard precision ground ball screw availability table 1.3 standard ... precision rolled ball screw availability table 6-7 2.1 reliability ... high stiffness 2.5 high durability 2.6 lead time 8 service life 8.3 allowable load ... static rated load coa 8.3.2 calculation of allowable load 8.3.3 standard material ... 4 hardness coefficient 25-27 2 features of rbc ball screws 9 driving torque 9.1 ... ball screw torque 9.1.1 normal operation 9.1.2 ... during acceleration 27-29 3 rbc ball screw selection procedure flow chart 4 ... accuracy of rbc ball screws 4.1 lead accuracy 4.2 mounting accuracy ... 8 9-11 10 lubrication safety design 10.1 lubrication 10.2 contaminant ... method 10.3.3 dog stop method 29-31 5 screw shaft design 5.1 ball screw ...

5.5 precautions for screw design 5.5.1 thread runoff adjacent diameter ... should be given to ensure an economical design for your ball screw application the ... ball thread runoff must extend off one end of the screw shaft for the ... this is to facilitate the loading of the ball nut package a internal ... 5.2 hardness/transition zone rbc s ball screw shaft is induction hardened thus an ... zone may be present at each end of the screw thread area depending on the design ... please consider this when designing the effective stroke consult rbc for ... details 6 nut design 6.1 nut selection 6.1.1 series the ... return tube type ˇ suitable for large lead screw shaft diameter ratio ball ... outside diameter ˇ suitable for small lead/shaft outside diameter ratio 18 ...

j jm js w l g total moment of inertia on motor lbins2 moment of ... inertia of the motor lbins2 moment of inertia of the screw shaft lbins2 ... moving weight lbs table workpiece lead in gravitational acceleration 386.4 in/ ... s2 10 lubrication and safety design 10.1 lubrication rbc s standard grease ... for highly loaded gears and actuator screw mechanisms with a viscosity of 3.1 cst ... °f and an operating temperature range of -100°f 73°c to 300°f 149°c rbc s ... specification can be used in most ball screw applications rbc s standard oil is an ... vg220 way oil has an operating range of -65°f to 250°f for lubrication under ... or water if allowed to enter the ball screw may increase friction and cause damage ... for example the entry of chips or cutting oil may be expected ...

12 rbc precision ground ball screws dimensional tables rbc s standard ... series for precision ground ball screws covers a wide range of ball screw ... ground series mm series is a metric lead series with an external ball return and ... and non preload units and a double nut offering im series is a metric lead series with ... nut preload non preload and double nut offerings based on screw major diameter two ... are provided gn series is an inch lead series with an external ball return and ... preload units and double nut preload offerings series also includes flange mount ... units as standard gv series is an inch lead series with an external ball return and ... patterns shown rb series is an inch lead series designed for high speed ... such as food processing this is an inch lead series this series is a non preloaded ...

14 quickturnŽ ball screw repair service rbc has repaired ball ... screws on the equipment of virtually every machine tool ... especially the southeast quickturnŽ is designed to allow us to respond quickly to the ... and provide a solution with a minimum of downtime see chart below please call ... .62.renew for details quickturnŽ ball screw repair planning guide repair type ... service lead time typical pricing of new free 10-30 40-60 40-60 30-50 50-70 ... with new components replace nut replace screw regrind screw new screw regrind nut ... regrind nut regrind screw new nut complete assembly replaced 2 1 ... weeks weeks weeks warranty all ball screws are repaired by highly skilled ... all workmanship on repaired ball screws for one year 64 ...

growth diameter and length as a result of elevated temperatures caused by the ... absorption of heat tolerance limits the bandwidth ... of allowable manufacturing dimensions from ... a nominal design specified value torque force applied ... the axial distance traversed by the screw or nut in one direction turns the ... number of revolutions that the ball nut track ... makes about the screw axis one circuit vee-thread threaded ... portion of ball nut or screw shaft variation rate of change in ... material and improve the retention of lubricate wobble error the total ... variation peak-to-peak in lead error for one revolution of the ball ...