NSK LS25JM Linear Guide
The NSK LS25JM is a standard-flange, high-rigidity linear motion guide from NSK's LS series. Engineered with a 4-row Gothic arch groove design and optimized ball circulation, it delivers exceptional radial, reverse-radial, and lateral load capacity, high rigidity, and stable precision for general industrial and precision machinery. The JM-type flange slider features side-mounted mounting holes for versatile installation, ensuring strong rigidity and easy assembly in compact automation systems.
Product Overview
The NSK LS25JM is a standard-flange, high-rigidity linear motion guide from NSK’s LS series. Engineered with a 4-row Gothic arch groove design and optimized ball circulation, it delivers exceptional radial, reverse-radial, and lateral load capacity, high rigidity, and stable precision for general industrial and precision machinery. The JM-type flange slider features side-mounted mounting holes for versatile installation, ensuring strong rigidity and easy assembly in compact automation systems.
Core Official Features (NSK Global Catalog)
- 4-Row Gothic Arch Grooves: 4-point contact architecture provides equal load capacity in radial, reverse-radial, and horizontal directions, with high resistance to moment loads.
- Optimized 50° Contact Angle: Delivers superior rigidity and load capacity for heavy-duty, high-precision applications.
- High-Speed & Smooth Motion: Precision ball recirculation minimizes friction, noise, and vibration for stable high-speed operation.
- Self-Alignment Capability: Absorbs minor installation surface errors, ensuring smooth motion and consistent accuracy.
- K1™ Maintenance-Free Lubrication: Compatible with NSK K1 lubrication units for long-term, low-maintenance operation.
- Interchangeable Design: Conforms to global dimensional standards for easy replacement and system integration.
- Wide Accuracy & Preload Options: Available in multiple accuracy and preload grades to meet diverse application requirements.
Official Dimensional Specifications (mm, NSK Official Data)
| Parameter | Value |
|---|---|
| Slider Height (H) | 33 |
| Slider Width (W) | 73 |
| Slider Length (L) | 73 |
| Rail Width (W1) | 23 |
| Rail Height (H1) | 23 |
| Slider Mounting Hole | M8×12 |
| Rail Mounting Hole Pitch | 60 |
| Rail Mounting Hole | φ7×11 |
| Grease Nipple | PT1/8 |
Official Performance Parameters (NSK Official Data)
| Parameter | Value |
|---|---|
| Basic Dynamic Load Rating (C) | 19.6 kN |
| Basic Static Load Rating (C0) | 27.5 kN |
| Static Permissible Moment (MR) | 0.64 kN·m |
| Static Permissible Moment (MP) | 0.64 kN·m |
| Static Permissible Moment (MY) | 1.18 kN·m |
| Mass of Slider | 0.44 kg |
| Mass of Rail | 1.35 kg/m |
| Standard Rail Length | Up to 3960 mm |
Standard Specifications
- Accuracy Grades: Normal (PC), High (PH), Precision (SP), Super Precision (UP)
- Preload Grades: Z0 (Clearance), Z1 (Light Preload), Z3 (Medium Preload)
- Material: High-carbon chromium bearing steel (standard)
- Seals: Standard double seals (UU), optional low-dust seals (SS)
- Lubrication: Standard grease lubrication; K1™ maintenance-free unit optional
- Surface Treatment: Black oxide finish (standard)
Typical Applications
- General industrial machinery
- Automated assembly lines
- Packaging equipment
- Semiconductor manufacturing equipment
- Precision measuring instruments
- Robotics & handling systems
- Machine tools & peripheral equipment
