Super-Heavy Load (Four-Way Equal Load) Model SVS for Machine Tools｜LM Guide｜Product Information

Types

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Basic load rating (kN): Basic dynamic load rating 37 to 208 / Basic static load rating 52.2 to 269
Size : 25,30,35,45,55,65

Basic load rating (kN): Basic dynamic load rating 43.7 to 260 / Basic static load rating 66.1 to 370
Size : 25,30,35,45,55,65

Basic load rating (kN): Basic dynamic load rating 37 to 208 / Basic static load rating 52.2 to 269
Size : 25,30,35,45,55,65

Basic load rating (kN): Basic dynamic load rating 43.7 to 260 / Basic static load rating 66.1 to 370
Size : 25,30,35,45,55,65

Basic load rating (kN): Basic dynamic load rating 68.6 to 136 / Basic static load rating 88.6 to 180
Size : 35,45,55

Basic load rating (kN): Basic dynamic load rating 86.1 to 164 / Basic static load rating 123 to 237
Size : 35,45,55

Basic load rating (kN): Basic dynamic load rating 68.6 to 136 / Basic static load rating 88.6 to 180
Size : 35,45,55

Basic load rating (kN): Basic dynamic load rating 86.1 to 164 / Basic static load rating 123 to 237
Size : 35,45,55

Features

Structure and Features

Models SVR/SVS have higher rigidity and load-bearing capacity than other models in the Caged-Ball LMGuide series. In addition, they maintain the performance of LM Guide and achieve high reliability by enhancing the dust-control performance with a wide range of options that take into account the service environments of machine tools and other machinery.

* Since models SVR/SVS have very high rigidity, their structures are easily affected by the misalignment of the mounting surface and the installation error. If affected by these factors, their service life may be shortened or their motion may be disrupted. When considering using these models, contact THK.

Super Heavy Load, Increased Damping

The raceway of models SVR/SVS adopts a circular-arc deep groove with a curvature approximate to the ball diameter. Since the ball contact area increases as the applied load increases, a large load carrying capacity is achieved and damping is also improved.

Increased Dust-proof Performance

The foreign material removal function is improved with a newly developed protector to strengthen the dust-proof performance. In addition, use of a side scraper reduces the entrance of foreign material into the LM block, thus maintaining the LM Guide performance for a long period even in adverse environments.

High Rigidity

Models SVR/SVS achieve the highest rigidity among the Caged Ball LM Guide series. Both the radial type SVR and the 4-way equal load type SVS are available for the same size. Depending on the intended use, you can select either type.

Wide Array of Options

Various options are available, including end seal, inner seal, side seal, Laminated Contact Scraper LaCS, protector, side scraper and Cap GC, to respond to diversifi ed service environments.

Models SVR/SVS Contamination Protection Performance Evaluation

Models SVR/SVS maintain their performance under severe conditions with fine particles or liquid contamination.

Test conditions

Item		Description
Tested model		SVS45LR1TTHHYYC1+2880LP×2set
Maximum speed		200m/min
Stroke		2500mm
Grease used		THK AFB-LF Grease
Environmental conditions	Foreign Matter	Type: Metal powder (Atomized Powder)(particle diameter: 125 μm or less)
	Foreign Matter	Amount: 0.4 g/20 min
	Coolant	Water-soluble coolant
	Coolant	Amount: 0.2 cc/10 s

Models SVR/SVS with option (TTHHYY option)

TTHHYY Option:
	Double Seals Laminated Contact Scraper LaCS Protector Side Scraper

Test Result

Models SVR/SVS maintain their performance even after traveling 3000 km under severe conditions with exposure to coolant and contamination.

Detailed information for each model number

Dimensional drawing/Dimensional table

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Products	Contents
LM Guide	LM rail standard lengths and maximum length, tapped-hole type LM rail, frame for LM rail clamps, steel plate for LM rail clamps, etc.
Ball Screw	Axial clearance, maximum manufacturing length of shaft, etc.
Actuator	Movable part mass, etc.

Standard Lengths and Maximum Lengths of LM Rails