Linear Axis Robot
BER Economic Type
BBR Ballscrew Driven
BTR Timing Belt Driven
BSF Ballnut
BDF Ballnut
BSE Ballnut
BSR Ballnut
BSM Ballnut
Linear Guide
BLH-F/FL Carriage
BLH-N/NL Carriage
BLH-M/ML Cariage
End Support
BK/BF Support
FK/FF Support
EK/EF Support
AK/AF Support
Jaw Coupling
Single Disc Coupling
Double Disc Coupling

Installation method of ball screw nut

First of all, it is not recommended that users remove and install nuts by themselves, especially high-precision ball screws.

If the nut accidentally falls off or you have disassembled it now, please reinstall the nut according to the following method: Turn an outer diameter slightly smaller than the bottom diameter of the screw raceway (about 0.1mm smaller) and the inner diameter slightly larger than the outer diameter of the end of the screw. (Large 0.5 ~ 2mm), the hollow sleeve is longer than the nut length (10 ~ 50mm).

Defective installation of ball screw pair in old method

1.According to the traditional process, the ball screw pair is installed with a mandrel and positioning sleeve to connect the bearing support at the two ends and the middle wire mother seat together for correction. Use a dial indicator to align the mandrel axis with the machine tool guide. And make the mandrel drive free and brisk method. This installation method is more convenient to apply to small CNC machine tools and machining centers with small strokes in three coordinate directions.

Due to the gap between the core rod and the positioning sleeve, the positioning sleeve and the bearing holes supported at both ends, and the wire socket hole in the middle, the coaxiality error between the installed bearing bearing hole and the wire socket hole is often large, causing Increasing the screw lead, increasing the radial offset load, causing a series of serious consequences such as temperature rise, thermal deformation and transmission torque increase in various parts of the screw shaft system, leading to overload and overheating of the servo motor and servo system alarm , Affecting the normal operation of the machine.

In addition, the actual difference between the bearing holes at both ends and the center wire mother seat hole cannot be accurately measured, which affects further accurate adjustment. For three CNC machine tools and machining centers with large strokes in the coordinate direction, because the required mandrel is more than 1500mm, it is difficult to process and it is difficult to ensure accuracy. Therefore, the alignment method of the mandrel and positioning sleeve cannot be used to perform the ball screw pair. installation.
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Who we are
FBT INDUSTRIES,loacated in Zhejiang,China,the professional solution provider for linear motion project and products,with more than 12 years experiences in Linear Automation filed.

Chinese manufacturer for Linear Axis Moudel, Linear Motion Robot,Linear Guide,C7 Rolled Ballscrew ,C5 C3 Ground Ballscrew,BK BF End support,FK FF End Support,EK EF End Support,AK AF End Support,Jaw Flexible Coupling,Disc Coupling