EGHS175F Covered Ball Screw Linear Stage

A covered exterior with an accessible mounting platform

The EGHS175F Covered Ball Screw Linear Stage places the moving mechanism inside a longitudinal housing while keeping the tooling connection accessible above it. The stainless-steel cover strip shields the working section from direct exposure, and the carriage provides the interface for the machine's moving fixture.

This arrangement is useful where tooling must travel over the axis without leaving the screw fully exposed beneath it. The cover separates the working area from much of the internal mechanism, but it is not a substitute for a machine enclosure where coolant, fine powder or machining chips are present. No IP rating is specified for this model.

The product photographs show two complementary views: the covered assembly and an open view of the screw, rails and carriage. In the open view, the ball screw runs between two parallel guides, allowing the drive and load-support components to share the same base rather than requiring separate mounting structures.

Follow the load from the fixture into the stage

A fixture connects to the carriage, which transfers its load into four EGH20 blocks running on two EGR20 rails. The Ø25 mm C7 ball screw supplies movement along the axis. Keeping these functions within one assembly reduces the number of separate screw-support and guide-mounting interfaces that the machine builder must provide.

The installation drawing identifies eight M8 threaded mounting holes and two Ø6 H7 locating holes at the moving interface. The threaded holes secure the attached plate; the locating holes provide a reference for its position. A matching adapter can therefore use separate features for fastening and location instead of relying only on clearance around mounting screws.

That interface deserves attention when a second axis is mounted on top. The lower stage carries the upper module, its adapter, motor and tooling as well as the workpiece. The height and offset of this assembly also affect the moment applied to the guides. The combination illustrations show possible arrangements, but they do not establish a load rating for a complete XY or XYZ machine.

The following specifications define the available drive configurations:

The EGHS175F Covered Ball Screw Linear Stage must be evaluated using one corresponding set of lead, speed and handling figures. Repeatability describes return-to-position consistency and should remain separate from an absolute positioning requirement.

For machine integration, the BC drawing also distinguishes usable travel from body length: a 500 mm stroke corresponds to dimension A of 740 mm. Motor projection and service access require additional space. Using the complete drawing preserves the intended travel without crowding the end assembly or obstructing access to the drive connection.

About Us

Guangyuan manufactures linear-motion components and assembled stages, including this covered ball screw series. Our EGHS175F catalog provides BC, BL, BR and BM motor arrangements, with compatibility listed for an 86-frame stepper motor or a 400 W/750 W servo motor.

We accept drawing-based OEM/ODM enquiries for mounting interfaces and integration requirements. For a combined-axis project, include the connecting plates and the weight of the upper assemblies in the application drawing so the requested configuration can be reviewed as a complete moving load.

The minimum order quantity is 1 unit. Motor, brake, driver and controller inclusion should be identified in the quotation.

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