Selecting the correct linear guide system requires balancing requirements for precision, load capacity, mounting surface preparation, and environmental conditions.
1. HG Series (Heavy Load Ball-Type)
The HG Series utilizes recirculating steel balls as the rolling elements and serves as a global industry standard for high-precision, mid-to-heavy automation.
Elastic Compliance (Self-Alignment): Due to its point-contact geometry, the ball-bearing design possesses a calculated degree of elastic compliance. This allows the blocks to absorb minor mounting surface imperfections-such as slight flatness errors in welded or non-ground frames-without binding.
Lower Operating Friction: Ball-type guides generally exhibit lower frictional resistance than roller guides. This results in smooth linear translation, minimal heat generation at elevated speeds, and reduced driving torque requirements.
Cost-Effectiveness: Offering simplified manufacturing, ball-type guides are highly economical, providing an excellent performance-to-cost ratio for standard industrial projects.
Design Versatility: These units are straightforward to clean and maintain, with a wide variety of carriage configurations (including Standard, Low-Profile, and Miniature) to fit diverse spatial constraints.
Ideal Applications: CNC routers, pick-and-place robotics, wood/plastic machining, and general industrial automation where the mounting frame is not precision-ground.
2. RG Series (High-Rigidity Roller-Type)
The RG Series replaces traditional steel balls with cylindrical rollers that interface with the rail along a solid line. It is the robust choice for high-precision, heavy-duty industrial metal cutting.
Superior Rigidity: Because cylindrical rollers utilize line contact, they resist deformation under high loads. This design significantly reduces structural deflection compared to ball-type guides, ensuring excellent stability during heavy machining.
Exceptional Shock Resistance: Roller-type guides are highly resistant to the sudden impact forces encountered in heavy metal cutting or industrial pressing, drastically reducing the risk of raceway brinelling (denting) under extreme shock.
High Moment Load Capacity: The large surface area of the rollers provides excellent resistance to complex torsional and moment loads, which is a critical requirement for long, cantilevered gantries.
Extended Fatigue Life: Distributing loads across a linear contact path lowers sub-surface stress concentrations on the raceway. This significantly extends the L10 rated fatigue life under continuous, heavy-duty 24/7 operations.
Ideal Applications: Heavy-duty boring mills, large gantry milling machines, stone or metal grinding centers, and large-scale metal stamping presses.