Choosing between the HGH and EGH square linear guide series depends primarily on your system's vertical envelope constraints, payload requirements, and target dynamic speeds:
1. HGH Series: High-Rigidity Industrial Standard
Part of the HG (Heavy Load) family, the HGH series is engineered for high structural stiffness and heavy cutting loads.
Design Profile: Standard high-assembly square block with a tall cross-section.
Engineering Advantage: High Load Capacity & Rigidity. The taller block and rail profile accommodates larger-diameter internal ball bearings and deeper raceway grooves, maximizing resistance to elastic deflection under heavy loads.
Ideal Applications: Heavy-duty CNC milling machines, industrial lathes, large gantry axes, and machinery subjected to high cutting forces, shock loads, and heavy moment (twisting) loads.
2. EGH Series: Low-Profile, High-Dynamics Specialist
Part of the EG (Low Profile) family, the EGH series is engineered specifically for compact automation where vertical space is constrained.
Design Profile: Low-profile assembly height (H) with a shortened, lightweight block body.
Engineering Advantage: Compact Envelope & Low Inertia. The EGH series reduces vertical stack height by 4 mm to 6 mm (depending on nominal size), while its lower mass reduces moving inertia to support rapid acceleration and high cycle rates.
Ideal Applications: High-speed pick-and-place robotics, automated assembly cells, semiconductor handling, medical diagnostics, and compact auxiliary slides where minimized moving mass is essential.