THK SL25UU Linear Bushing Encased Type (Long Type)
THK SL25UU is a long‑type LM case unit integrating two standard LM25UU linear bushings into a rigid aluminum housing, designed for high‑rigidity, low‑friction linear motion in medium‑to‑heavy load applications.
THK SL25UU is a long‑type LM case unit integrating two standard LM25UU linear bushings into a rigid aluminum housing, designed for high‑rigidity, low‑friction linear motion in medium‑to‑heavy load applications.
Official Specifications
| Parameter | Value |
|---|---|
| Inscribed Bore Diameter (dr) | 25 mm |
| Overall Length (L) | 130 mm |
| Housing Dimensions | Height (M) 51.5 mm; Width (W) 76 mm |
| Basic Load Ratings | Dynamic (C) 1,400 N; Static (C₀) 2,750 N |
| Mass | 520 g |
| Retainer Material | Synthetic resin |
| Seal Type | UU (double‑lip seals on both ends) |
| Mounting | Tapped holes M8×18; Through bolt M6 |
| Center Height (J) | 26 mm (±0.02) |
| Material | Aluminum housing; bearing steel outer cylinder |
| Lubrication | Pre‑lubricated with anti‑rust oil; supports grease replenishment |
| Operating Temperature | −15 °C to 80 °C |
| Bore Tolerance | 0 to −0.010 mm |
Key Features
- Dual linear bushings for exceptional rigidity and load capacity
- Seamless aluminum housing for stable bolt‑on installation
- UU double seals for superior dust and contamination protection
- Synthetic resin retainer ensures quiet, smooth linear movement
- Compatible with hardened precision shafts; self‑aligning for minor misalignment
Applications
Widely used in industrial automation, packaging machinery, conveying systems, machine tools, and heavy‑duty linear motion systems requiring robust, long‑stroke guidance.
