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Servo cable CF21-UL PVC - chainflex

Servo cable CF21-UL PVC - chainflex

Vendor : Igus

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These cables provide a superior service life in harsh environments with outstanding resistance to most oils, solvents and coolants.

·         Part no.: CF21.

·         Core number and conductor cross-section [mm²]: (4G0.75 + 2X (2X0.34)C)C

·         Outer diameter max. [Mm]:12.5


·         For heavy duty applications

·         Outer jacket: PVC

·         Oil resistance: Oil-resistant according to DIN EN 50363-4-1

·         Silicone-free

·         Flame retardant

·         Overall shield

·         CFRIP®

General properties

Number of Conductors and AWG size

4 C 18 AWG (0.75) | 1 STP 20 AWG (0.5)


with green-yellow earth core

Outer diameter max.

0.45 inch (11.5 mm)

Copper index

58.5 lbs/mft (87 kg/km)


127.0 lbs/mft (189.0 kg/km)

Drive technology system


Dynamic information

Min. bend radius, e-chain® (factor)

7.5 x d

Min. bend radius, e-chain®

3.4 inch (86.3 mm)

Min. bend radius, flexibel (factor)

6.0 x d

Min. bend radius, flexible

2.7 inch (69.0 mm)

Min. bend radius, fixed (factor)

4.0 x d

Min. bend radius, fixed

1.8 inch (46.0 mm)

Temperature, e-chain® min.

41 °F (5 °C)

Temperature, e-chain® max.

158 °F (70 °C)

Temperature, flexible

+23 °F to +158 °F (-5°C to +70°C)

Temperature, fixed

+5 °F to +158 °F (-15 °C to +70 °C) (following DIN EN 50305)

v max., unsupported

33 ft/s (10 m/s)

v max., gliding

16 ft/s (5 m/s)

a. max.

262.5 ft/s² (80 m/s²)

Length of travel

Travels up to 328 ft (100 m)



chainflex® servo cable CF21-UL PVC

Download manual

Typical application areas:

  • For heaviest duty applications
  • Almost unlimited resistance to oil, also with bio-oils
  • Indoor and outdoor applications, UV resistant
  • Unsupported and gliding travel distances up to 1,312 ft (400 m) and more
  • Storage and retrieval units for high-bay warehouses, machining units/machine tools, quick handling, cleanroom, semiconductor insertion, outdoor cranes, low-temperature applications

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