Description

Elevator Steel Wire Rope 6/8/10/11/12/13/16mm Introduction

1. What Our Steel Rope Really Is

• Construction: 8×19 Seale + fibre core, right-hand lay, ultra-drawn wire rod
• Grade: 1770 MPa tensile, 1960 MPa on request; breaking load 1.5× rated load
• Lubrication: factory-filled with polymer grease, -30 °C to +80 °C
• Diameters: 6, 8, 10, 11, 12, 13, 16 mm — one-stop for any lift from 320 kg to 3,200 kg
• Lengths: 30–600 m, laser-cut and sealed ends, colour-coded tags
• Certs: EN 12385, ISO 4344, CE, factory test certificate included

2. Where Each Diameter Is Used

• 6 mm: scenic lifts, observation elevators, 2:1 roping, 320–630 kg
• 8 mm: machine-room-less (MRL) passenger lifts, 1:1 roping, 630–1,000 kg
• 10 mm: standard passenger elevators, 1:1 or 2:1, 1,000–1,600 kg
• 11 mm: heavy-duty passenger or light freight, 1,600–2,000 kg
• 12 mm: freight elevators, hospital beds, 2,000–2,500 kg
• 13 mm: high-rise freight, car lifts, 2,500–3,000 kg
• 16 mm: super high-rise or machine-room (MR) goods lifts, 3,000–3,200 kg

3. Installation – Safety First

1. Measure old rope — add 0.3 % for stretch, mark both ends for lay direction.
2. Cut new rope — laser hot-seal ends, attach pulling sock, lubricate with polymer spray.
3. Pull through — use existing rope as fish-tape; maintain lay direction (right-hand).
4. Anchor — pour resin sockets or use tapered wedges; torque to factory chart.
5. Tension — equalise strands within ±2 % using hydraulic tension gauge.
6. Run 10 cycles — check elongation <0.05 %, no bird-caging or strand pop.

4. Daily Operation – What the Rope Actually Does

• Carries 100 % of car + load weight; safety factor ≥12 (EN 81-20)
• Transmits motor torque without slip; 1:1 or 2:1 roping ratio
• Factory grease releases micro-film, preventing internal corrosion
• Pre-stretched lay eliminates “constructional stretch” first year
• Temperature range -30 °C to +80 °C — outdoor scenic lifts included

5. Replacement Cycle & Mandatory Discard

• High-rise office (>1,000 trips day⁻¹) – inspect every 3 months, replace every 4 years
• Residential tower (300–600 trips day⁻¹) – inspect every 6 months, replace every 6 years
• Low-rise freight (≤200 trips day⁻¹) – inspect annually, replace every 8 years

• Broken wires ≥2 per lay or ≥1 in 30 d (visual)
• Diameter reduction >6 % (caliper test)
• Corrosion pits >0.2 mm depth
• Bird-caging, kinking, heat damage
• Tension difference >5 % between ropes

6. Extending Life – 3 Pro Tips

1. Keep equal tension — use hydraulic gauge every 6 months
2. Clean ropes monthly; brake-dust paste acts like sandpaper
3. Never over-grease — factory polymer is sufficient; excess attracts grit

7. Why Buy from Nanjing Zhuye Elevator Parts?

• Factory-new, not recycled; passes 1,000-hour salt-spray and 2,000-cycle bend test
• Pre-stretched and pre-lubricated — no re-tensioning after 3 months
• Dual stock: 50 km Nanjing, 20 km Dubai — next-day to 65 countries
• Bundle kit: rope + resin sockets + tension gauge — 5 % cheaper than single OEM spool
• 24 months warranty against broken wires or abnormal wear
• 7×24 WhatsApp/WeChat video support; average response 10 minutes

Conclusion