Definition
A linear guide is a mechanical guide device that converts rotational motion into high-precision linear motion. It consists of a guide rail (fixed component) and a slider (moving component). It achieves low-friction, high-rigidity linear displacement through the cyclic motion of rolling elements (steel balls/rollers). The core function is to provide precise guidance and load-bearing for industrial equipment.
Core structure and working principle
I. Basic structure
2.Workflow
Load application → Slider moves under force → Rolling body rolls on the rail surface → Circulates through the end return channel → Forms infinite continuous motion
Technical classification and comparison
3.Key performance parameters
Accuracy level
General level (±50μm/m)
Precision level (±15μm/m)
Ultra-precision level (±5μm/m, constant temperature environment required)
Load capacity
Radial load (acting vertically on the track surface)
Torque load (anti-overturning capacity when eccentrically loaded, divided into three directions: Ma/Mb/Mc)
Life calculation
Adopt ISO standard formula:
text
L10 = (C/P)^3 × 50km
(L10: rated life, C: dynamic rated load, P: equivalent load)