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High-rise

DRAKO 300 T and
DRAKO 300 TX

9-strand heavy duty rope

Ropes for Traction Sheave Elevators
with Steel Core (IWRC)

The strand construction of DRAKO 300 T and 300 TX is dependent on the rope ­diameter to optimize fatigue bending performance and wear resistance.

This rope has been probably the first elevator rope in the world with a steel core (IWRC). It has been designed in 1955 by DRAKO. After this rope being nationally and internationally successful in demanding building projects, ropes with steel core are now also implemented in the relevant European and ISO-standards.

Standard wire strength will soon reach the height limit in the challenge of the highest elevator shafts. Increasing the tensile strength of the rope wires can be a feasible way to shift this limit further. For example as 300TX with nominal wire strength of 1960 N/mm² the rope offers new advantages to high and super high rise applications. The number of ropes, and thereby the rope mass, could be reduced in many hoist ways. Invest and installation costs can be reduced. Weight savings in rope mass enable a sustainable reduction of the power consumption.

Field of Application

DRAKO 300 T is the most efficient solution as suspension rope for high and very high elevators and for all traction drive elevators with many deflection sheaves.

Advantages

very round cross-section

many thin wires, hence very flexible with good bending ­performance

high flexural performance

small elastic and plastic ­elongation

Characteristics

preformed, ­prestretched, bright ­(galvanized on request, in some ­diameters ex stock)

Rope grades
(N/mm2)

1570 and 1960 as DRAKO 300 TX

DRAKO 250 TPC

8-strand compacted double-parallel steel core rope

Ropes for Traction Sheave Elevators
Double-Parallel Steel Core Ropes

Thanks to the compaction of the strands, the metallic cross-section is additionally enlarged. This, in turn, leads to a further increase in breaking strength as compared to non-compacted double-parallel ropes. Moreover, the compacted outer strands are well-rounded and go easy on traction and deflection sheaves. The run is particularly quiet, which thus enhances ride comfort. Due to compaction, rotation is reduced during the installation process.

Field of Application

Suitable for systems with large loads and high demands not just on ­precision stopping for loading and unloading procedures but also in terms of ride comfort.

Advantages

very rounded rope cross-section

very high flexural performance

unrivalled large metallic filling factor

high cross-stability

very low elastic and plastic ­elongation very high breaking strengths with rope grade 1570 already

super quiet smooth run

Characteristics

preformed, ­prestretched, bright, ­compacted

Rope grades
(N/mm2)

1570 and 1770

DRAKO 300 TP

9-strand double-parallel steel core rope

Ropes for Traction Sheave Elevators
Double-Parallel Steel Core Ropes

This is the strand design of the time-proven DRAKO 300 T, here with a double-parallel rope. The wide metallic cross-section leads to higher breaking strengths and reduced elastic and permanent elongation. The simplified stranding process with double-parallel ropes leads to a different rope behaviour during installation compared to our independently stranded IWRC ropes.

Field of Application

Suitable for systems with high demands on precision stopping for loading and unloading procedures.

Advantages

well-rounded rope cross-section

very high flexural performance

very large metallic filling factor

high cross-stability

very low elastic and plastic ­elongation

high breaking strengths

Characteristics

preformed, prestretched, bright

Rope grades
(N/mm2)

1570