7-Flex® wire ropes

We offer 7-Flex ropes for many applications that currently use 6 x 19 or 6 x 36 classification ropes. Their operating characteristics are similar in many ways to 6 x 36 classification ropes. Typical applications such as container cranes, logging portal cranes and sawmill carriages have reported increased service life with the 7-Flex.

The 7-strand construction offers improved resistance to bending fatigue compared to a 6 x 26 due to a combination of the outer wire size and the seventh strand. These products are also available in a TUF-KOTE^® / PFV option to further enhance their service characteristics.

Minimum Breaking Force and weights for all 7 strand XIP^® classification ropes

Diameter (in.)	Approximate wt./ft. (lbs.)	Minimum Breaking Force (tons of 2000 lbs.)
3/8	0.26	7.55
1/2	0.46	13.3
9/16	0.59	16.8
5/8	0.72	20.6
3/4	1.04	29.4
7/8	1.42	39.8
1	1.85	51.7
1 1/8	2.34	65.0
1 1/4	2.89	79.9

8 x 19 classification

Standard constructions are regular lay and either 19 Seale or 25 Filler Wire. The size relationship between strands and core gives these ropes increased bendability over 6 strand ropes of the same diameter. It has less crushing resistance than a 6 strand rope.

Minimum Breaking Force and weights for 8 x 19 IPS classification ropes

	Approximate wt./ft. (lbs.)		Minimum Breaking Force  (tons of 2000 lbs.)
Diameter (in.)	Fiber core	IWRC	Fiber core	IWRC
3/16	0.055	--	1.33	--
1/4	0.098	--	2.35	--
5/16	0.15	0.18	3.65	4.01
3/8	0.22	0.26	5.24	5.76
7/16	0.30	0.36	7.09	7.80
1/2	0.39	0.47	9.23	10.1
9/16	0.50	0.60	11.6	12.8
5/8	0.61	0.73	14.3	15.7
3/4	0.88	1.06	20.5	22.5
7/8	1.20	1.44	27.7	30.5
1	1.57	1.88	36.0	39.6
1 1/8	1.99	2.39	45.3	49.8
1 1/4	2.45	2.94	55.7	61.3
1 3/8	2.97	3.56	67.1	73.8
1 1/2	3.53	4.24	79.4	87.3