NSK NH25AN Linear Guide
The NSK NH25AN is a high-performance, standard-profile linear guide featuring a square-type slide block designed for high-load applications. Engineered with NSK's advanced tribology and ball circulation technologies, it delivers 1.3 times the dynamic load rating and twice the service life compared to the conventional LH Series. It maintains full interchangeability of mounting dimensions with LH/LS models, ensuring seamless upgrades.
Product Name: NSK NH25AN Linear Guide (Square Type, Standard High-Load)Series: NH Series (Successor to LH Series)
1. Product Overview
The NSK NH25AN is a high-performance, standard-profile linear guide featuring a square-type slide block designed for high-load applications. Engineered with NSK's advanced tribology and ball circulation technologies, it delivers 1.3 times the dynamic load rating and twice the service life compared to the conventional LH Series. It maintains full interchangeability of mounting dimensions with LH/LS models, ensuring seamless upgrades.2. Key Dimensions (mm, Official)
- Slide Block (NH25AN):
- Length (L): 79
- Width (W): 48
- Height (H): 40
- Rail Width (W1): 23
- Rail Height (H1): 22
- Mounting Holes: M6×1×9
- Weight: Approx. 0.67 kg (Slide Only)
3. Load Ratings (N, Official)
- Basic Dynamic Load Rating (C): 26,800
- Basic Static Load Rating (C₀): 46,000
- Static Moment Ratings (Single Slide):
- Rolling Moment (MR): 360 N·m
- Pitching Moment (MP): 320 N·m
- Yawing Moment (MY): 1,840 N·m
4. Performance Specifications
- Preload Options:
- Fine Clearance (ZT/Z0): 0~3 µm
- Slight Preload (ZZ/Z1): Standard
- Medium Preload (ZH/Z3): High Rigidity
- Rigidity (N/µm):
- Vertical: 206 (Z1) / 380 (Z3)
- Lateral: 147 (Z1) / 284 (Z3)
- Max. Speed: 3.2 m/s (Standard)
- Operating Temp.: -10°C to +80°C
- Accuracy Grades: Normal (PN/PC), Precision (P6), High (P5), Super (P4), Ultra (P3)
- Material: Special High-Carbon Steel (Standard) / Stainless Steel (Optional)
- Standard Protection: Double End Seals + Bottom Seals
- Lubrication: Compatible with NSK K1-L Lubrication Unit (Optional, Maintenance-Free)
5. Features & Benefits (Official)
- Superior Durability: Optimized ball groove geometry for 2x longer life vs. LH Series.
- High Load Capacity: 50° contact angle for exceptional vertical/horizontal load resistance.
- Smooth & Quiet: Refined ball circulation path for low noise at high speeds.
- Easy Installation: Self-aligning DF design absorbs mounting errors.
- Interchangeable: Rails/slides freely match; mounting dims identical to LH Series.
- Maintenance-Free: Optional K1-L unit enables >100,000 km service without re-lubrication.
