THK LRA & LRA-Z LM Roller
The THK LRA & LRA-Z LM Roller is designed for smooth and accurate linear motion. Its rollers circulate along a precision-ground raceway, while the guide structure helps prevent skewing. This supports stable movement and high accuracy.
The LRA is a compact LM Roller that fits into a groove for installation. It can be secured with SM or SE fixtures and bolts. The LRA-Z uses a resin retainer for a lighter design. It also has a groove for fitting a seal and supports travel speeds of up to 1 m/s.
Both LRA and LRA-Z models are available in 15 to 50 mm sizes. Basic dynamic load ratings range from 21.6 to 285 kN, while basic static load ratings range from 39.9 to 577 kN.
