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Gerber FastFact #:
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Summary:
Tools used:
Referencing 0,0 position
The encoder pulse must be set to its original position after a new lead screw is installed. Before removing the
old lead screw, it is advised to use the pen tool to draw a line in the X direction on the table top. You can then
use this in setting the new lead screw's 0 position.
Note: In the case of an inoperable lead screw, see fast fact #2041, "Establishing the Y-Axis encoder pulse
position."
To Reference 0,0 position
1 Turn the Sabre on at the controller.
2 Orient system.
3 Place pen tool in spindle motor (without moving beam from position it stopped at when it finished
orienting).
4 Lower Pen tool to Table top to depress spring in pen so it can draw on table top.
SABRE™ 408 Y-Axis Lead Screw Replacement Procedure
2018
Gerber Hardware Support
Updated on December 8, 2009 (June 19, 2007)
The following procedure explains how to replace the Y-Axis lead screw on a
Sabre 408 Router.
• Metric Allen Wrench set – "Long-L" type
• Metric Allen Wrench set – "T handle" type
• Torque Wrench – INCH POUND
• Socket for Torque Wrench – 15mm for Lead screw bolts, ¼" for Chapman bits
• Metric Chapman Drive set
• Light duty thread locking compound. LocTite 222 or equivalent and LocTite 245
or equivalent
• Medium duty thread locking compound. LocTite 242 or equivalent
• Isopropyl alcohol for clean-up
Page 1 of 9
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Summary of Contents for Gerber SABRE 408
- Page 1 Updated on December 8, 2009 (June 19, 2007) Summary: The following procedure explains how to replace the Y-Axis lead screw on a Sabre 408 Router. • Metric Allen Wrench set – “Long-L” type Tools used: • Metric Allen Wrench set – “T handle” type •...
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Page 2: Removing The Front Cover
Page 2 of 9 5 Slew pen in X direction leaving a line 1” long. Removing the front cover To Remove the front cover 1 Remove the T-Vac™ T handles from the front of the router by pulling them off the valves. 2 Support the front panel and remove the four screws (3mm) attaching the T-Vac panel to the end covers and the two screws (2.5mm) attaching the T-Vac panel to the leg covers. - Page 3 Page 3 of 9 3 Remove the four ball valve mounting bolts (6mm) from the center ball valve and rotate it toward you and out of the way of the lead screw block. Removing the Y-Axis lead screw from the router To Remove the Y-Axis lead screw from the router 1 Unbolt the two (6mm x 25mm) cap screws that secure the front lead screw support block/bushing assembly from the tie beam using a 5mm Allen wrench.
- Page 4 Page 4 of 9 3 Remove the 17mm x 45mm hex-head bolts and flat washers from the front and rear of the lead screw using the 17mm socket. Then loosen the two (5mm x 30mm) clamping screws in each of the front and rear lead screw clamps (split blocks) using a 5mm Allen wrench to free the lead screw.
- Page 5 Page 5 of 9 7 Using the beam as a carrier, carefully slide lead screw forward out of the table. Installing the Y-Axis lead screw To install the Y-Axis lead screw 1 Orient the replacement lead screw and nut assembly so the machined flats in the lead screw are at the rear.
- Page 6 Page 6 of 9 2 Clean the four 8mm x 45mm cap screws with alcohol, install the flat washers, apply a dab of Loctite 242 to the threads. Slide the front clamp onto the lead screw and reinstall the clamp to the frame leaving the mounting screws and clamping screws finger tight.
- Page 7 Page 7 of 9 7 Clean the two (17mm x 45mm) hex-head bolts with alcohol, install the flat washers and apply a dab of Loctite 242 to the threads. Insert the bolts/washers into each end of the lead screw. Tighten finger tight.
- Page 8 Page 8 of 9 Installing the front cover To install the front cover 1 Rotate the center ball valve back towards the front of the router. Install the four ball valve mounting bolts (6mm) on the center ball valve. 2 Support the front panel while you install the four screws (3mm) attaching the T-Vac panel to the end covers and install the two screws (2.5mm) attaching the T-Vac panel to the leg covers.
- Page 9 Page 9 of 9 5 You will need to go under the machine and remove the four screws (5mm) from the motor cover on the y-axis motor housing with a 5mm Allen wrench. (The beam will be at the front of table so it will require someone to crawl under the machine.) When under the table, loosen the clamp screw (2.5mm) on the motor pulley.
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