404/406XR Series Product Manual Chapter 4 - Base Mounting Procedures
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Parker Hannifin Corporation
1140 Sandy Hill Road
Irwin, PA 15642
Chapter 4 - Base Mounting Procedures
Mounting Surface Requirements
Proper mounting of the 404XR is essential to optimize product performance. All specifications are based
on the following conditions:
The positioner must be bolted down along its entire length.
The positioner must be mounted to a flat, stable surface with a flatness error less than or equal to
0.013mm/300mm.
Catalog Specifications may deviate for positioners mounted to surfaces that do not meet the
above conditions.
If the surface does not met these specifications the surface can be shimmed to comply with these
requirements.
If mounting conditions require that the table base is overhung, table specifications will not be met over that
portion of the table. Additionally, in X-Y Systems the overhung portion of the Y-axis may not met
specifications due to the additional error caused by deflection and non-support of the base. Contact Parker
Hannifin Corporation for guidelines on specifications of overhang applications.
Base Mounting Methods
The 404/406XR Series can be mounted in one of two ways:
Base thru holes
The 404/406XR tables have M6 counter bored holes in the base of the unit. See dimensional drawings
for hole location.
To access the base mounting holes, remove the center cover.
Locate and remove bearing cover plate (opposite motor end) by removing (2) button head screws.
Note: If a brake or rotary encoder is employed the cover plate will not be present. Remove brake or encoder
according to appropriate mounting procedure.
Remove top cover by removing the (4) button head screws that are going through the corners of the cover.
These screws are also used to hold down the strip seal mounting plate.
Note: The strip seals do not need to be removed.
Slide the cover off from underneath the strip seals. The cover can only slide in the direction away from the
motor.
FOR THE 404XR ONLY: The base mounting holes are counter bored for M6 Low Head Cap Screws. It is
very important that LOW Head screws are used to allow clearance for the moving carriage.
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