ABB IRB 920 Product Manual page 446

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5.6.3 Replacing the pulley on the ball screw upper position

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Refit the mechanical stopper to the ball screw at

1 mm position to the upper of the ball screw.

For robots with protection class IP54 (option 3350-

For robots with protection type Clean Room (op-

tion 3351-1)

Refit the mechanical stopper to the ball screw at

2 mm position to the upper of the ball screw.

Hold the ball screw to prevent it from dropping.

Or the ball screw may be destroyed.

If the ball screw nut or ball screw spline nut go

out of the screw shaft, the ball screw is destroyed.

Be careful when you do any work that may cause

xx1800002859

For robots with protection class

IP30 (option 3350-300)

xx1900002012

For robots with protection class

IP54 (option 3350-540)

For robots with protection type

Clean Room (option 3351-1)

xx1900002011

Product manual - IRB 920

3HAC075721-001 Revision: C

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