The THK HSR30 is a standard-size, full-ball linear motion (LM) guide from THK’s globally acclaimed HSR series. It features a 4-way equal-load design and self-aligning capability, delivering high rigidity, precision, and versatility for general-purpose to heavy-duty automation applications.
Official Specifications
1. Standard LM Block (HSR30A / HSR30R) Dimensions
| Parameter | Value (A/R Type) |
|---|
| Model Number | HSR30 (A: Flanged, R: Standard) |
| Block Height (M) | 42 mm |
| Block Width (W) | A: 62 mm / R: 42 mm |
| Block Length (L) | 96 mm |
| Mounting Bolt Size | M8 × 12 (4 holes) |
| Bolt Pitch (F) | 70 mm |
| Grease Nipple | B-M6F |
| Standard Seal | UU (Non-contact side seal) |
| Material | High-carbon chromium bearing steel (Rail/Balls), Cast Iron (Block) |
2. Rail Specifications (HSR30 Series)
| Parameter | Value |
|---|
| Rail Height (H3) | 30 mm |
| Rail Width (W1) | 28 mm |
| Number of Ball Rows | 4 rows (2 per side) |
| Contact Angle | 45° (4-way equal load)THK |
| Precision Grade | Standard (Normal Grade) |
| Operating Temperature | -10°C to +70°C |
3. Load & Performance Ratings
| Parameter | Value |
|---|
| Basic Dynamic Load Rating (C) | 39.2 kN |
| Basic Static Load Rating (C0) | 51.0 kN |
| Static Permissible Moment (Ma) | 2.94 kN·m |
| Static Permissible Moment (Mb) | 2.94 kN·m |
| Net Weight (Block only) | Approx. 2.8 kg (A/R type) |
Key Features (THK Official)
- 4-Way Equal Load CapacityThe 45° contact angle design provides identical load ratings in radial, reverse-radial, and lateral directions, allowing universal mounting in any orientation.
- Self-Adjusting (Auto-Aligning) CapabilityTHK’s proprietary DF (Double Front) circular-arc groove configuration absorbs mounting errors while maintaining smooth, backlash-free motion even under preload.
- High Rigidity & DurabilityThe 4-row ball structure offers exceptional rigidity and minimal differential slip under offset loads, ensuring long-term precision and wear resistance.
- Ball Retention SystemAn integrated ball retainer holds balls securely, preventing them from falling out when the block is detached from the rail.
- Global Standard ComplianceAdheres to international size standards for broad interchangeability and compatibility across systems.
Typical Applications
- General industrial machinery
- Semi-automatic assembly lines
- Precision measuring equipment
- Packaging machines
- Material handling systems
- Woodworking CNC routers
