THK SVR35R Ultra-Heavy Load Radial LM Guide Block
The THK SVR35R is a high-rigidity, ultra-heavy load radial-type LM Guide (Linear Motion Guide) with a caged-ball structure, belonging to the SVR series. Specifically designed for machine tools and heavy industrial equipment, it features a narrow-width block (R-type) optimized for space-saving installations while delivering exceptional load capacity, damping, and precision.
The THK SVR35R is a high-rigidity, ultra-heavy load radial-type LM Guide (Linear Motion Guide) with a caged-ball structure, belonging to the SVR series. Specifically designed for machine tools and heavy industrial equipment, it features a narrow-width block (R-type) optimized for space-saving installations while delivering exceptional load capacity, damping, and precision.
Official Specifications
1. Standard Block Dimensions (SVR35R: Narrow, Tapped Hole Type)
| Parameter | Value |
|---|---|
| Model Number | SVR35R |
| Block Height (M) | 44 mm |
| Block Width (W) | 70 mm |
| Block Length (L) | 109.5 mm |
| Mounting Bolt Size | M8×12 (4 holes) |
| Bolt Pitch (L1) | 79 mm |
| Standard Seal | UU (Non-contact side seal) |
| Grease Nipple | B-M6F |
| Material | High-carbon chromium bearing steel (Rail/Balls), Cast Iron (Block) |
| Operating Temperature | -15°C to +80°C |
2. Rail Specifications (SVR35 Series)
| Parameter | Value |
|---|---|
| Rail Height (H3) | 35 mm |
| Rail Width (W1) | 52 mm |
| Number of Ball Rows | 4 rows (2 rows per side) |
| Contact Angle | Radial (Optimized for vertical load capacity) |
| Raceway Design | Deep circular-arc groove (near ball diameter curvature) |
| Precision Grade | Normal (Standard), H (High), P (Precision) |
| Preload Options | Normal (no symbol), C1 (Light), C2 (Medium) |
3. Load & Performance Ratings (SVR35R Standard Block)
| Parameter | Value |
|---|---|
| Basic Dynamic Load Rating (C) | 89.6 kN |
| Basic Static Load Rating (C0) | 116 kN |
| Static Permissible Moment (Ma) | 5.25 kN·m |
| Static Permissible Moment (Mb) | 3.53 kN·m |
| Static Permissible Moment (Mc) | 5.25 kN·m |
| Net Weight (Block only) | Approx. 3.0 kg |
| Rail Weight | Approx. 5.8 kg/m |
4. Long Block Dimensions (SVR35LR: Long Narrow Type)
| Parameter | Value |
|---|---|
| Model Number | SVR35LR |
| Block Length (L) | 135 mm |
| Bolt Pitch (L1) | 104.5 mm |
| Dynamic Load Rating (C) | 112 kN |
| Static Load Rating (C0) | 160 kN |
| Net Weight (Block only) | Approx. 3.7 kg |
Key Features (THK Official)
- Ultra-High Rigidity & Radial Load CapacityThe deep circular-arc raceway design significantly increases ball contact area under load, providing exceptional rigidity and ultra-high radial load capacity, ideal for heavy vertical machining operations.
- Superior Damping & Vibration ResistanceOptimized ball-groove contact delivers enhanced damping performance, effectively reducing chatter during heavy cutting and improving workpiece surface finish.
- Caged Ball TechnologyIntegrated ball cages eliminate metal-to-metal ball friction, ensuring low noise, high-speed travel, excellent lubricant retention, and long-term maintenance-free operation.
- Narrow Width Design (R-type)The slender block profile (70mm width) is specifically engineered for installations with limited table width, maximizing design flexibility in compact machine tools.
- High Precision & DurabilityPrecision-ground raceways and high-hardness steel ensure minimal wear, consistent positioning accuracy, and extended service life under extreme loads.
- Excellent Dust ProtectionStandard side seals and compatibility with THK's LaCS (Multi-layer Contact Scraper) provide superior contamination resistance, maintaining performance in harsh, dusty environments.
Typical Applications
- Machine Tools (Machining centers, milling machines, grinders, boring machines)
- Heavy-duty industrial machinery & press machines
- Large robotic arms & heavy positioning systems
- Die-casting & injection molding machines
- Precision measuring instruments
- Woodworking machinery
