# 16K20 screw-cutting lathe — Zaporozhstal OJSC

**IE A026**  
Zaporozhstal OJSC · Ukraine · 2013

Spindle and gear-tooth geometry improved, vibration fell, turning surface finish improved. 16K20 screw-cutting lathe, Zaporozhstal OJSC. Ukraine · 2013.

## Measured

- gearbox tooth thickness, 5.8 → 5.9 and 6.0 → 6.15 mm — **0.05-0.15 mm**
- power draw under load, 3.48-3.74 → 3.2-3.45 kW — **7.6 %**
- vibration velocity at control points, 1.23-1.71 → 0.10-0.70 mm/s — **59-89 %**
- roughness of the turned surface Ra, 7.98 → 2.1-2.4 µm — **3.3-3.8×**

## Conclusion

Spindle and gear-tooth geometry improved, vibration fell, turning surface finish improved

Page: https://industry.xado.com/case/akt_oao_zaporozhmtal_tokarno_vintoreznyi_stanok_16k20_o10512
PDF report: https://industry.xado.com/pdf/TIER%20A/Zaporizhstal/Tokarno-vintoreznyy-machines-16K20/IE-A026_XADO_Zaporizhstal_Tokarno-vintoreznyy-machines-16K20_EN.pdf
Original scan: https://industry.xado.com/scans/akt_oao_zaporozhmtal_tokarno_vintoreznyi_stanok_16k20_o10512.pdf