THK HCR25A Curved Guide Rail – Heavy-Duty Arc Rail for Circular Motion
| Parameter | Value / Description |
|---|---|
| Model | THK HCR25A |
| Material | High carbon chromium bearing steel (SUJ2) |
| Hardness | HRC 58~62 |
| Matching curved block | THK HCR25C |
📐 Arc length formula: Arc length = radius × angle (rad). Example: R800mm, 90° → arc length ≈ 1257mm.
Heavy-Duty Arc Linear Motion Guide for Large Circular Applications
The THK HCR25A curved guide rail is a heavy-duty arc rail designed for smooth, high-load circular motion. With a wider rail (25mm) and larger capacity, it handles significantly higher loads than the HCR15A series while maintaining low friction and high rigidity. Ideal for large rotary tables, heavy robotics, circular packaging lines, and industrial automation equipment.
Feature of HCR15A Curved Guide Rail
Customization Options
Arc radius (mm): R200, R300, R400, R500, R600, R800, R1000, R1200, R1500, R2000, R2500, R3000, R4000 (others available on request)
Arc angle: 30°, 45°, 60°, 90°, 120°, 180°, 270°, 360° (full circle)
Surface treatment: Standard untreated / Black chrome plating / Anodized (corrosion protection only)
Accuracy grade: N (Normal) / H (High) / P (Precision)
🔧 Need a non-standard radius or angle? Provide a CAD sketch or radius/angle requirements, and we will produce a custom solution.
Application
🏭 Industrial Automation
Used in automated assembly lines, rotary transfer machines, and material handling systems for reliable curved motion of workpieces and tool changers.
🏥 Medical & Lab Equipment
Ideal for medical imaging devices, diagnostic scanners, and lab automation workstations, where high precision and low noise are critical.
🎭 Stage & Amusement Systems
Perfect for rotating stage platforms, theme park ride mechanisms, and moving display systems, with durability for frequent use and heavy loads.
📦 Packaging Machinery
Applied in rotary packaging machines, sorting systems, and curved conveyor lines for precise product movement at high speeds.
Why Choose Our THK HCR15A Curved Guide Rail?
✅ 100% genuine original THK products with full quality verification
✅ Flexible MOQ options: small prototype orders to large industrial bulk purchases
✅ Custom solutions: curved radii, pre-lubricated options, and modified assemblies available
✅ Fast global shipping with secure anti-rust packaging and door-to-door delivery
✅ Professional technical support for installation guidance and compatibility checks
RFQ
Q1: Can the HCR25A curved rail be combined with straight HSR25A rails to form an oval loop?
A: Yes. THK provides transition blocks (straight-to-curve adapters) for racetrack layouts. Provide your layout drawing for a compatibility check.
Q2: What is the maximum speed for HCR25A on a curved path?
A: Recommended ≤ 1.2 m/s for radii ≥R500mm. For smaller radii (R300–R500), keep ≤ 0.8 m/s to minimize wear and noise.
Q3: What is the maximum load per block on a curved rail?
A: The dynamic load rating (C = 12.8 kN) applies to curved motion as well, but actual allowable load depends on radius and speed. Contact us for detailed calculation.
Q4: Is the HCR25A curved rail in stock?
A: Common radii (R500, R800, R1000) with 90°/180° arcs and HCR25C blocks are usually in stock. Non-standard radii require custom production (15–20 days).
Q5: Can I use the HCR25A rail with a different THK curved block?
A: Only HCR25C is fully compatible. Other block series (e.g., HCR15C) have different raceway geometry and will not fit.
Q6: What lubrication is recommended?
A: THK AFJ-LF grease or equivalent lithium soap base grease. Lubricate every 6 months or 2000 km of travel; more frequently in dusty or wet conditions.
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