Type RSX-NM SERIES

THK’s LM Guide Model RSX Type RSX NM SERIES represents a significant advancement in miniature linear motion technology, specifically engineered to prevent ball fallout while maintaining high precision and reliability in compact applications. This full ball type LM guide incorporates a unique ball retainer mechanism that securely holds the balls within the guide, eliminating the risk of dislodgement during transportation, installation, or maintenance. The design ensures smooth, uninterrupted motion even in vertical or inverted orientations, making it ideal for space-constrained environments where traditional guides may fail.

Key technical features of the RSX NM SERIES include its compact cross-sectional dimensions, which allow for seamless integration into miniature assemblies without sacrificing load capacity or rigidity. The guide employs a high-precision, ground raceway with optimized ball groove geometry, reducing friction and minimizing torque variation for consistent performance. Its full ball contact design distributes loads evenly across all rolling elements, enhancing durability and extending service life under demanding conditions. The series also features corrosion-resistant materials and optional seals to protect against contaminants like dust and moisture, ensuring reliable operation in harsh industrial settings.

Performance advantages are evident in the RSX NM SERIES’s ability to deliver high accuracy, low noise, and minimal maintenance requirements. The anti-fallout mechanism prevents operational disruptions, reducing downtime and increasing productivity in automated systems. With a high allowable load capacity and excellent positional repeatability, these guides support precise linear movements critical for applications requiring micron-level accuracy. Their lightweight yet robust construction contributes to energy efficiency by minimizing inertial losses in high-speed operations.

Typical applications span various industries, including industrial machinery where the RSX NM SERIES is used in CNC machining centers for tool positioning, semiconductor manufacturing equipment for wafer handling, and assembly robots for pick-and-place tasks. In automotive systems, these guides facilitate precise movements in engine component testing rigs, braking system calibrators, and electric vehicle battery production lines. For precision equipment, they are integral to medical devices like MRI scanners and surgical robots, optical alignment systems in metrology instruments, and 3D printing mechanisms requiring stable, repeatable motion. By combining anti-fallout reliability with miniature dimensions, the RSX NM SERIES enables innovation in compact, high-performance designs across diverse sectors.

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Model No. Outer dimensions Basic load rating
Radial
Height
M
Width
W
Length
L
Dynamic
rating
C
Static
rating
C0
mm mm mm kN kN
RSX 5NM LM Guide
6
12
20.1
0.45
0.7
RSX 7NM LM Guide
8
17
31
1.63
2.51
RSX 9NM LM Guide
10
20
40.8
2.94
4.59
RSX 12NM LM Guide
13
27
47.7
4.72
6.83
RSX 15NM LM Guide
16
32
60.7
8.27
11.8