NJSKT,SYK,FST Fixed side Ball Screw Support Unit FK06

Ball screw support unit

• T he Support Unit comes in six types: models EK, FK, EF, and FF, which are standardized for standard Ball Screw assembly provided with finished shaft ends, and models BK and BF, which are standardized for ball screws in general . The Support Unit on the fixed side contains a high precision JIS Class 5-compliant angular contact ball bearing provided with an adjusted preload.
• The ball screw of the supported side rectangular used the deep groove ball bearings with the high preformance and high accurauy.
• NJSKT bearings offers a full range of support bearings to be fitted on the machined ends of precision rolled ball screws.
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• Installing the suport unit( NJ1 )
  

1. I nstall the fixed side support unit with the screw shaft.
2. After inserting the fixed side support unit,Secure the lok nut using the fastening set piece and the hexgonal socket- head setscrews.
3. Attach the supported side bearings to the screw shaft and secure the bearing using the snap ring,And then install the assemblu to the housing on the supported side.

• Installation onto the table and the base.( NJ2 )

1. If using a bracket when mounting the ball screw nut to the table,insert the nut into the bracket and temporarily fasten it.
2. Temporarily fasten the fixed side support unit to the base.Nowpress the table toward the fixed side support unit to align the axial center,and adjust the table so that it can travel freely.
3. Press the table toward the fixed-side support unit to aligh the axial center,Make the adjustment by reciprocation the table several times so that the nut travels smoothly throughout the whole stroke,and teporarily secure the support unit to the base.

• Checking the accuracy and fully fastening the support unit.( NJ3 )

1. 1. While checking the runout of the ball screw shaft end the axial clearance using a dial gauge,fully fasten the ball screw unt,the nut bracket, the fixed side support unit and the supported-side support unit.
      

• Connwction with the motor( NJ4 )

1. Mount the motor bracket to the base.
2. Connect the motor and the ball screw using a coupling.

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