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Low-rise

DRAKO 250 T
Low D/d-Ratio

8-strand steel core rope

Ropes for Traction Sheave Elevators
Steel Core Ropes

In million ways established steel core rope with 8 outer strands in ­Warrington design also with smaller rope diameters. By intense testing and verification of safety now approved for very low D/d ratio! Also for indirect hydraulic elevators according to EN 81-2.

TÜV Süd Certificate KP067/2*

  • very low D/d ratio of up to 8 mm in diameter
  • required drive torque is greatly reduced
  • cost saving drives possible
  • space saving in indirect hydraulic elevators thanks to very small pulleys

So customized elevator systems with an optimized cost benefit ratio are possible.

Field of Application

The customer-focussed and cost optimized solution for individually designed and more frequented elevators.

Extended application range

With the aid of our TÜV Süd certificate concerning the examination of ­conformity KP 067/2 is the application of wire ropes Ø ≤ 8 mm with ­reduced D-/d-ratio possible.

Advantages

flexible with good bending ­endurance

low elastic and plastic elongation

high breaking strength in relation to diameter

Characteristics

preformed, ­prestretched, bright, right hand, ­ordinary lay

Rope grades
(N/mm2)

1570 and 1770

DRAKO 8 x 19S

8-strand suspension ropes with natural fibre core

Ropes for Traction Sheave Elevators
with Fibre Core (FC)

Field of Application

The rope construction 8 x 19 Seale – NFC, see drawing, is without doubt the worldwide most common traction drive suspension rope. But also the rope construction 8 x 19 Warrington – NFC has its market share in Germany and UK due to better fatigue bending properties.

Anyway, 8-strand ropes with natural fibre core are the best solution for the normal traction drive elevator.

The rope quality of this rope construction depends on the quality of the fibres and the resulting fibre core. This is the reason, why DRAKO is only using DRAKO-made fibre cores.

Advantages

rounder than 6-strand ropes, i.e. more contact points rope to groove

deformable in cross-section, i.e. the new rope adapts a little bit to slightly worn out grooves

easy to install

Characteristics

preformed, ­prestretched, bright, right hand, ­ordinary lay, lang lay on request

Rope grades
(N/mm2)

1570 and 1370/1770