TATSUTA Electric Wire & Cable Co., Ltd.

Business Units

Equipment Wire and Cable

Our independently developed high-strength cable is
a valuable contribution to high level factory automation (FA).
With its outstanding flex durability, high-strength cable is at the heart of
TATSUTA’s product portfolio for industrial uses.

TATSUTA manufactures cable using an independently developed special high-strength copper alloy wire. While maintaining high conductivity, this wire boasts a tensile strength and repetitive bending strength twice that of general alloy wire and its superior flex durability ensures long life. TATSUTA is able to customize proposals for industrial robots, as well as any of a variety of scenarios where flexible cable is needed.


*  On January 1, 2019, TATSUTA ELECTRIC WIRE AND CABLE CO., LTD. transferred and assigned its business of manufacturing and selling appliance cable related products that use high-strength copper alloy to its wholly owned subsidiary, Tatsuta Tachii Electric Cable Co., Ltd.

Product Information

KORIKI™ High-Strength Cable (UL Standards)Meets UL standards

TATSUTA has developed a high-strength copper alloy wire that is remarkably superior to pure copper wire in tensile strength and repetitive bending strength. This wire helps provide drastically improved flex durability in our high-strength robot cable. As a cable for industrial robot and automated machinery usage, we firmly believe that this product will satisfactorily meet customer expectations. It is also possible to customize the product to meet the needs of the customer.

Technical Document
Vol. 1 Customization
Vol. 2 Cable Selection
Product photo
Product Features
  • Fine wire made of high-strength copper alloy to provide superior flex and twist durability used for conductors.
  • Tensile strength 2.2 times higher than pure copper wire.
  • Available insulation types include heat resistant vinyl and cross-linked polyethylene insulation, as well as ETFE (ethylene tetrafluoroethylene resin) insulation with high bending durability.
  • Shielding with high flex durability and high flexibility available, depending on application and usage conditions.
  • In many usage conditions, the standard heat and oil resistant, low friction vinyl sheath is applicable. There is also other sheathing with outstanding weld spatter and flame retardancy, as well as special sheathing with solvent resistance and low outgassing properties.
  • Complies with RoHS Directive* Eco-friendly (halogen free) type also available
    • Restriction on Hazardous Substances (environmental regulation restricting use of specific hazardous substances)
    • RoHS2 Compliance pending
  • Certified under UL standards
Characteristics of High-Strength Copper Alloy

The conductor used in high-strength cable is a high-strength copper alloy independently developed by TATSUTA.
Using oxygen-free copper as a base, minute amounts of iron, phosphorous, and special elements are added to the copper alloy, which is processed using a highly effective heat treatment method to provide superior tensile strength, repetitive bending strength and conductivity.

Main Characteristics
Material Tensile strength
Ratio Conductivity
Annealed electric copper wire 23 1.0 times 98%
General copper alloy (tin) 34 1.5 times 60%
Copper alloy used in high-strength cable 52 2.2 times 80%
Conductor size
AWG size 28 26 25 23 21 19 17 15 13
Nominal cross-section
0.1 0.15 0.2 0.3 0.5 0.75 1.25 2 3.5
Product Types and Comparison

TATSUTA can propose the optimal cable depending on your application and usage conditions.

Grade Cable model no. Conductor Insulation Sheath No. of flex cycles until
complete wire breakage
standard product
UL2854 OHFR-PCVV High-strength
copper alloy
Vinyl Vinyl Minimum of
20 million cycles
standard product
UL2854 OHFR-PCTV High-strength
copper alloy
ETFE Vinyl Minimum of
50 million cycles
- Pure copper Vinyl Vinyl 5 million cycles

*Test parameters are independently developed by TATSUTA. Values shown are reference values, not warranty values.

Cable Symbols and Structures

[Example] Standard UL2854 high-strength cable,
vinyl insulation with vinyl sheath braided shield, 25AWG x 10 pairs

Characteristics of shielding materials
Symbol Material type Feature
Flex durability Flexibility Thin diameter
SB braided shield Excellent Good Good Good
SW served shield Good Good Excellent Excellent
SBH braided shield made by strings of copper foil Good Excellent Good Average
SWH served shield made by strings of copper foil Good Excellent Excellent Average
KS shielding each pairs Excellent Good Average Average

*ExcellentExcellent GoodGood AverageAverage

Structure Types
Standard type (vinyl insulation, vinyl sheath)
Model no. Rating Conductor size (Upper: AWG, Lower: SQ)
28 26 25 23 21 19 17 15 13
0.1 0.15 0.2 0.3 0.5 0.75 1.25 2 3.5
UL2854-OHR-PCVV UL2854-OHFR-PCVV(-SB) 80℃ 30V          
UL2854-OHFR-PCPVV-SB 80℃ 30V            
UL2464-OHFR-PCVV(-SB) UL2464-OHFR-PCPVV-SB 80℃ 300V            
UL2501-OHFR-PCVV(-SB) 105℃ 600V          
High-grade type (ETFE insulation, vinyl sheath)
Model no. Rating Conductor size (Upper: AWG, Lower: SQ)
28 26 25 23 21 19 17 15 13
0.1 0.15 0.2 0.3 0.5 0.75 1.25 2 3.5
UL2854-OHR-PCTV UL2854-OHFR-PCTV(-SB) 80℃ 30V        
UL2854-OHFR-PCPTV-SB 80℃ 30V            
UL2464-OHFR-PCTV(-SB) UL2464-OHFR-PCPTV-SB 80℃ 300V            
UL2501-OHFR-PCTV(-SB) 105℃ 600V          
Special type (Vinyl/ETFE insulation, vinyl sheath)
Model no. Rating Conductor size (Upper: AWG, Lower: SQ)
28 26 25 23 21 19 17 15 13
0.1 0.15 0.2 0.3 0.5 0.75 1.25 2 3.5
PCVU(-SB) PCTU(-SB) -      
High-Strength Cable Applications
  • Thin, High-Strength Cable image Thin High-Strength Cable
  • High-strength slip cable image High-strength slip cable
  • Spatter resistant high-strength cable image Spatter-resistant high-strength cable
  • Antimicrobial electric wire image Antimicrobial electric wire
For inquiries about Equipment Wire and Cable