HGL25HA2R280ZAC
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Overview |
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| Part Number | HGL25HA2R280ZAC |
Brand: LILY ![]() |
Interchangeable With: HIWIN |
Characteristics |
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| System of Measurement | Metric |
| Series | Heavy Load Ball Type Linear Guideway |
| Assembly Type | Low Assembly |
| Block Model | HGL25HA |
| Block Type | Square Type |
| Load Type | Extra Heavy Load |
| Rail Mounting Type | Locking(R) |
| Mounting Hole Size (M) | M6*6 |
| Number of blocks | 2 |
| Standard Lubrication Nipple | M6*0.75P |
| Rail Model | HGR25R280 |
| Rail Fixing Bolt Hole (mm) | M6*20 |
| Number of Rail Holes | 5 |
Dimensions |
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| Size | 25 mm |
| Assembly Height (H) | 36 mm |
| Distance from Block Bottom to Rail Bottom (H1) | 5.5 mm |
| Distance from Both Sides of Rail to Both Sides of Block (N) | 12.5 mm |
| Block Width (W) | 48 mm |
| Block Mounting hole Width (B) | 35 mm |
| Distance from Mounting Hole Center to Block Edge (B1) | 6.5 mm |
| Grease Nipple Length (G) | 12 mm |
| Block Mounting hole Length (C) | 50 mm |
| Block Length (L) | 104.6 mm |
| Rail Length | 280 mm |
| Rail Width (WR) | 23 mm |
| Rail Height (HR) | 22 mm |
| Outer Diameter (D) | 11 mm |
| Hole Depth (h) | 9 mm |
| Inner Diameter (d) | 7 mm |
| Pitch (P) | 60 mm |
| End Distance (E) | 20 mm |
Performance |
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| Accuracy Classs | Normal C |
| Preload Code | ★Z0-Light Preload 0~0.02 of dynamic raled load ★ZA-Medium Preload0.05~0.07 of dynamic rated load ★ZB-Heavy Preload0.10~0.12 of dynamic rated load |
| Basic Dynamic Rated Load (C) | 42.2 kN |
| Basic Static Rated Load (C0) | 69.07 kN |
| Static Rated Moment (MR) | 0.56 kN-m |
| Static Rated Moment (MP) | 0.57 kN-m |
| Static Rated Moment (MY) | 0.57 kN-m |
Properties |
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| Block weight | 0.57 kg |
| Rail weight | 3.21 kg/m |
The Heavy Duty Ball Linear Guideway features a Square Type block, characterized by its symmetrical, cube-like profile that provides exceptional rigidity and the ability to withstand high loads from multiple directions — including radial, reverse, and lateral forces. This block type is ideal for heavy-duty industrial applications such as CNC machining centers and gantry systems where stability and precision are critical.
The Heavy Duty Ball Linear Guideway is designed for Extra Heavy Load applications, capable of withstanding extraordinarily high radial, lateral, and reverse loads simultaneously, surpassing the capacity of standard heavy load configurations. Its robust construction and precision ball recirculation system ensure smooth, reliable linear motion even under the most extreme load conditions, making it the ideal choice for heavy-duty industrial environments such as CNC machining centers, large gantry systems, and heavy press machines.
The Heavy Duty Ball Linear Guideway features a Low Assembly type, characterized by its minimized mounting configuration that positions the rail and block at th…The Heavy Duty Ball Linear Guideway features a Low Assembly type, characterized by its minimized mounting configuration that positions the rail and block at the lowest possible installation height, maximizing space efficiency within the machine structure. This assembly type is specifically designed for installations where vertical clearance is critically limited, while still maintaining the guideway's robust load-bearing capability and precision linear motion, making it the ideal choice for heavy-duty industrial applications such as compact CNC machining centers and flat-bed systems where an ultra-compact footprint and high performance are both essential.
How does the Square Type block perform under multi-directional loading?
Thanks to its balanced, square cross-section, the Square Type block is engineered to distribute load evenly across all directions. When subjected to simultaneous radial, reverse, and lateral forces — which is common in complex machining operations — the block maintains its structural integrity and motion precision without deflection. The precision ball recirculation system within the block further ensures that contact stress is evenly spread across all load-bearing balls, minimizing localized wear and maintaining consistent performance over extended periods of operation, even under the most demanding multi-directional load conditions.
What defines the Extra Heavy Load capacity of a Heavy Duty Ball Linear Guideway?
The Extra Heavy Load capacity of a Heavy Duty Ball Linear Guideway is defined by its ability to withstand extraordinarily high radial, lateral, and reverse loads simultaneously — surpassing the capacity of standard heavy load configurations by a significant margin. This exceptional load-bearing capability is achieved through an even more robust construction featuring enlarged rail and block cross-sections, an increased number of oversized precision ball circuits, and premium-grade hardened steel components that maintain structural integrity under extreme and sustained force conditions. The internal geometry is specifically optimized to maximize load distribution across the maximum possible contact area, while the overall system stiffness is elevated to prevent any measurable deflection at the point of load application, ensuring uncompromised motion accuracy even in the most demanding extra heavy load environments.
What installation considerations should be observed when using the Low Assembly type?
When installing the Low Assembly type, particular attention must be paid to the flatness and surface finish of the mounting surface, as the reduced block height means any irregularity in the mounting interface will have a proportionally greater impact on rail alignment and motion accuracy. Mounting bolt torque must be carefully controlled and regularly verified, and adequate lubrication access must be ensured despite the compact assembly configuration to maintain reliable long-term performance.





