Flexible Tube Fibre Optic Cables - Why should we choose flexible tube fibre optic cables? Nestor Cables Ltd. is one of the few cable manufacturers who are able to produce flexible tube optical fibre cables. Newly developed flexible tube cable has a special construction which has several clear benefits compared to the traditional optical fibre cable. Flexible loose tube has been developed some years ago and Nestor Cables has been applying those eg. in blowable micro duct cables and indoor riser cables in projects around the world. Flexible loose tubes have proven to make cable installation significantly easier while also fulfilling all the same optical and mechanical requirements as traditional constructions. One can say that flexible tube cable construction combines the benefits of the central loose tube and the stranded loose tube constructions.

1. A new cable construction for easier installation
Flexible tube fibre optic cables
Why should we choose flexible tube fibre optic cables?
Nestor Cables Ltd. is one of the few cable manufacturers who are able to produce
flexible tube optical fibre cables. Newly developed flexible tube cable has a special
construction which has several clear benefits compared to the traditional optical
fibre cable.
Flexible loose tube has been developed some years ago and Nestor Cables has
been applying those eg. in blowable micro duct cables and indoor riser cables in
projects around the world. Flexible loose tubes have proven to make cable
installation significantly easier while also fulfilling all the same optical and
mechanical requirements as traditional constructions. One can say that flexible
tube cable construction combines the benefits of the central loose tube and the
stranded loose tube constructions.
traditional tube
fle
xible tube
www.nestorcables.com
Some benefits of flexible tube fibre optic cables are:
• Higher packing density of fibres results in significantly smaller
cables
• High fibre amounts are possible
• Construction has features which make installing easier:
-- pulling from the jacket is possible
-- fibres are located in the middle of the cable
-- mid-span access
-- flexible tubes are easy to handle in splices and terminations

2. FZ2RMSU Flex Flexible tube cable for indoor and outdoor installation
Flexible fibre tubes
Dry core
Strength members
Outer sheath
Properties
Maximum tension during installation 600 N
Temperature range
Operation -45 - +60 ºC
Installation -15 - +60 ºC
Crush strength with 100 mm plate 600 N
FZ4RMU Flex 3,5 kN Flexible tube non-metallic cable for direct buried
installation
Flexible fibre tubes
Dry core
Strength members
Outer sheath
Properties
Maximum tension during installation 3500 N
Temperature range
Operation -45 - +70 °C
Installation -15 - +70 °C
Crush strength with 100 mm plate 4000 N

3. FZVD2PMU Flex Flexible tube cable for direct buried installation
Flexible fibre tubes
Steel tape
Wrapping
Steel wire
Outer sheath
Properties
Maximum tension during installation 5 000 N
Temperature range
Operation -45 - +70 ºC
Installation -15 - +70ºC
Crush strength with 100 mm plate 6 000 N
FZOMU-SD Micro Flex Flexible tube cable for microduct installation by
blowing
Properties
Maximum tension during
installation
12 – 48F 750 N
96 – 192F 1000 N
Temperature range
Operation -40 - +70 °C
Installation -15 - +60 °C
Crush strength with 100 mm plate 500 N
Optical fibres
Jelly filling
Flexible fibre tube
Dry core
FRP rod
Filler
Rip cord
Sheath

4. www.nestorcables.com info@nestorcables.fi
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please visit our website.
Product specifications of flexible tube fibre optic cables
cable name cable size
diameter
mm
weight
kg/km
minimum bending
radius mm
length
m
drum
during
installation
installed
FZ2RMSU
Flex
2x12xSML 7,6 51 160 80 2000 K8
4x12xSML 7,6 55 160 80 2000 K8
8x12xSML 8,6 70 180 90 2000 K8
16x12xSML 9,6 92 200 100 2000 K9
1x4xSML
+1x4xOM3
7,6 50 160 80 2000 P8
1x8xSML
+1x8xOM3
7,6 51 160 80 2000 K8
1x12xSML
+1x12xOM3
7,6 51 160 80 2000 K8
2x12xSML
+2x12xOM3
7,6 51 160 80 2000 K8
FZ4RMU
Flex 3,5 kN
2x12xSML 9,2 63 180 90 6 000 K16
4x12xSML 9,2 63 180 90 6 000 K16
8x12xSML 10,6 84 220 110 6 000 K16
16x12xSML 12,6 114 260 130 6 000 K18
FZVD2PMU
Flex
2x12xSML 13,8 176 260 130 6 000 K20
4×12xSML 13,8 179 260 130 6 000 K20
8×12xSML 14,8 201 280 140 6 000 K22
16×12xSML 16,8 246 320 160 6 000 K22
24x12xSML 17,8 270 340 170 4 000 K22
FZOMU-SD
Micro Flex
2×12xSML 6,0 26 120 80 4 000 K8
4×12xSML 6,0 26 120 80 4 000 K8
8×12xSML 6,5 33 130 105 4 000 K10
12×12xSML 8,5 55 170 105 4 000 K12
8×24xSML 8,5 54 170 105 4 000 K12