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HG vs EG Linear Guides: Profile, High Rigidity and Mounting Differences

2025-11-23

HG is a heavy-duty, high-profile series with high rigidity, mainly used on CNC machine tools and rigid gantry axes. EG is a low-profile, lighter series that keeps reasonable rigidity but reduces overall height and weight, making it better for automation modules, pick-and-place units and compact machines.

In addition to profile and rigidity, the rail width and mounting hole pitch of HG and EG are not always the same, so they are usually not drop-in interchangeable. If you plan to switch from HG to EG or vice versa on an existing machine, you must check the rail width, hole spacing and counterbore dimensions carefully against your base.

Although EG is overall lower in rigidity than HG in pure vertical load, some EG variants have relatively wide rails and blocks, so their moment load ratings around roll/pitch/yaw are still quite good. For axes where overturning moment is more critical than extreme vertical rigidity, a properly sized EG guide can still be a very practical choice.

HIWIN Linear Guide

Ball Screw

3D Printer Linear Guide

Linear Guide Rail

Ground Ball Screw

Linear Bearing

Ball Screw Support

Shaft Coupling

Ball Spline

Ball Nut Housing

Linear Shaft

Stainless Steel Shaft

Linear Shaft Supports

CNC Linear Guide

HIWIN Linear Guide

Ball Screw

3D Printer Linear Guide

Linear Guide Rail

Ground Ball Screw

Linear Bearing

Ball Screw Support

Shaft Coupling

Ball Spline

Ball Nut Housing

Linear Shaft

Stainless Steel Shaft

Linear Shaft Supports

CNC Linear Guide

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HG vs EG Linear Guides: Profile, High Rigidity and Mounting Differences

HG vs EG Linear Guides: Profile, High Rigidity and Mounting Differences