# Coke pusher No. 2, screw-nut gearbox — OJSC Severstal, coke-chemical plant

**IE S035**  
OJSC Severstal, coke-chemical plant · Russia · 2005

The nut outlasted its rated service life without replacement, weekly lubricant top-ups stopped. Russia · 2005. Observation in an operating shop, without…

## Measured

- nut service life: 3–4 months on the standard grease → 5 months 26 days with no replacement, no failure occurred — **1.5×**
- grease consumption over 177 days: 12.6 kg of weekly top-ups (calculated at 0.5 kg per week) → 2 kg charged once — **6.3×**

## Conclusion

The nut outlasted its rated service life without replacement, weekly lubricant top-ups stopped

Page: https://industry.xado.com/case/akt_oao_severstal_smazka_dlia_pary_vint_gaika_g
PDF report: https://industry.xado.com/pdf/TIER%20S/Severstal/Koksovytalkivatel-2/IE-S035_XADO_Severstal_Koksovytalkivatel-2_EN.pdf
Original scan: https://industry.xado.com/scans/akt_oao_severstal_smazka_dlia_pary_vint_gaika_g.pdf