JWM Spiral Jack Load Diagram - Corresponding Measures
JWM Spiral Jack Load Diagram - Allowable Lateral Load, Buckling Stability, and External Guidance Requirements
What This Chart Covers
| Section | What It Shows | Why It Matters |
| Allowable Side Load | Maximum lateral force Fr (N) vs. unsupported screw length L (mm) | Prevents screw bending and premature wear |
| Buckling Stability | Allowable buckling load vs. stroke distance (SF=4) | Prevents screw buckling under compression loads |
| External Guide | When and how to add linear guides | Protects the jack from side loads |
How to Read the Chart
For side load verification:
Find your stroke distance L (mm) on the horizontal axis
Find your JWM model on the chart
The curve shows the maximum allowable Fr (N) – stay below this line
If your side load exceeds the limit, external guides are required
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