The THK LM Guide Actuator SKR55 represents a sophisticated integration of linear motion technology, combining a Caged Ball LM Guide Actuator with a motor wrap, long nut block (types A and B with cover), motor flange angle, and a 60×60 series frame. This system is engineered for high-precision, high-load applications where reliability and accuracy are paramount. The Caged Ball LM Guide Actuator utilizes a unique caged ball design, where precision balls are retained in a cage to minimize friction, reduce heat generation, and eliminate ball-to-ball contact. This results in smoother motion, extended service life, and consistent performance even under high-speed or heavy-load conditions. The actuator incorporates a long nut block that provides enhanced rigidity and load capacity, with variants A and B offering flexibility in mounting and alignment options, while the cover ensures protection against contaminants like dust, chips, and moisture.
Key technical features include the motor wrap and motor flange angle, which facilitate seamless integration with servo or stepper motors, enabling precise control over linear positioning. The 60×60 series denotes a compact, square profile that optimizes space utilization in machinery layouts, while maintaining high moment load resistance. Performance advantages stem from THK’s precision manufacturing, which ensures low noise operation, minimal backlash, and high repeatability. The system supports high acceleration and deceleration rates, making it ideal for dynamic applications. Additionally, the caged ball design reduces the need for frequent lubrication, lowering maintenance requirements and total cost of ownership.
Typical applications span industrial machinery, such as CNC machining centers, where the actuator provides precise table movements for milling, drilling, and grinding operations. In automotive systems, it is used in assembly robots for tasks like welding, painting, and part handling, where durability and accuracy are critical. For precision equipment, this actuator finds use in semiconductor manufacturing devices, optical alignment systems, and medical automation, where smooth, vibration-free motion is essential. Its robust construction and anti-contamination features make it suitable for harsh environments, ensuring long-term reliability in sectors like packaging, material handling, and aerospace. Overall, the THK LM Guide Actuator SKR55 delivers a balance of precision, durability, and efficiency, meeting the demanding needs of modern automation and motion control systems.
| Model No. | Stroke (stroke between mechanical stoppers) |
Outer rail length |
Overall length L1 |
|||
| Type A | Type B | Type C | Type D | |||
| mm | mm | mm | mm | mm | mm | |
1200(1226) |
1080(1098) |
— |
— |
1380 |
1464 |
|
800(826) |
680(698) |
— |
— |
980 |
1064 |
|
900(926) |
780(798) |
— |
— |
1080 |
1164 |
|
1000(1026) |
880(898) |
— |
— |
1180 |
1264 |
|
1100(1126) |
980(998) |
— |
— |
1280 |
1364 |
|