Technical information

SAG rope construction

The SAG ropes are constructed from an even number of round, ordinary lay steel ropes, featuring a steel core with linear wire contact in strands, alternately right and left laid, vulcanized on their whole length in rubber coating.

Depending on the requested unit mass and the minimal force breaking the rope completely, there are steel ropes vulcanized in the product numbering 2, 4, 6 or 8 pcs with diameters from 12 mm to 24 mm featuring strength class 1370, 1570, 1670 N/mm2. For the personal – service elevators the elements are constructed from steel ropes with diameter of 4.2 mm and featuring strength class 1770 N/mm².

The measurement scope for mining hoist ropes

  • unit mass from 2.5 kg/m to 22.3 kg/m,
  • rope width from 60 mm to 212 mm,
  • rope thickness from 22 mm to 35 mm.

 

Description Minimal guaranteed breaking force Fmin [kN] for the Rr strength class
Rr 1370 N/mm2 Rr 1570 N/mm2 Rr 1670 N/mm2
PARAMETERS OF ELEMENTS WITH ROPES Ø 12
Scope: from min. SAG 2,5 – 60 × 22/2 × 12
to max. SAG 4,0 – 105 × 22/2 × 12
158 183 193
PARAMETERS OF ELEMENTS WITH ROPES Ø 14
Scope: from min. SAG 3,2 – 60 × 29/2 × 14
to max. SAG 13,5 – 212 × 35/8 × 14
224
896
250
1000
274
1000
PARAMETERS OF ELEMENTS WITH ROPES Ø 16
Scope: from min. SAG 4,1 – 60 × 29/2 × 16
to max. SAG 17,3 – 212 × 35/8 × 16
300
1200
344
1376
365
1460
PARAMETERS OF ELEMENTS WITH ROPES Ø 18
Scope: from min. SAG 4,5 – 60 × 29/2 × 18
to max. SAG 19,0 – 212 × 35/8 × 18
366
1464
419
1679
446
1784
PARAMETERS OF ELEMENTS WITH ROPES Ø 20
Scope: from min. SAG 13,2 – 170 × 35/4 × 20
to max. SAG 17,8 – 212 × 35/6 × 20
858
1287
984
1476
1046
1569
PARAMETERS OF ELEMENTS WITH ROPES Ø 22
Scope: from min. SAG 14,8 – 170 × 35/4 × 22
to max. SAG 20,5 – 212 × 35/6 × 22
1138
1707
1302
1953
1387
2080
PARAMETERS OF ELEMENTS WITH ROPES Ø 24
Scope: from min. SAG 15,5 – 140 × 35/4 × 24
to max. SAG 22,3 – 212 × 35/6 × 24
1348
2017
1494
2242
1643
2460
PARAMETERS OF ELEMENTS WITH ROPES Ø 4,2 Minimal guaranteed rope breaking force Fmin [kN] for strength class 1770 N/mm2
Scope: from min SAG 0,5 – 30×10/2×4,2
to max. SAG 2-102X10/8X4,2
22,6
90,4

Versions:

  • flame retardant- air temperature from – 25oC to + 60oC,
  • frost resistant- air temperature from – 45oC to + 60oC.

 

Testing and repairs of rubber coating.

During the technical acceptance at the manufacturer’s the SAG rope is subject to the reference magnetic testing using the LRM diagnostic magnetic system.
The rubber coating of the SAG ropes guarantees effective protection of steel ropes in the SAG rope against corrosion due to adverse impact of the work environment. Each accidental mechanical damage of the rubber coating can be repaired in short time. SAG Sp. z o.o. has the Service Department for repairs of the rubber coating of the SAG ropes during their exploitation in mining hoists.
Repairs of the rubber coating are performed depending on the kind of damage by means of:

  • bonding,
  • vulcanizing (replacement of the coating on the place of the damage).