1. Executive Series Overview and Comparative Analysis
The OKI ORP High-Flex Robot Cable series represents a pinnacle in electromechanical interconnect technology, specifically engineered for the high-cycle environments of modern industrial automation. This product line utilizes a proprietary special elastomer insulation coupled with an oil-resistant PVC jacket to ensure structural integrity across sliding, swinging, and twisting vectors.
As a matter of engineering strategy, the series offers a critical trade-off between profile and mechanical longevity. The ORP-30F series prioritizes extreme miniaturization (up to 32% diameter reduction) for internal equipment wiring, albeit with a lower mechanical threshold of 50M sliding cycles. In contrast, the ORP-SL, ORP Standard, and ORP-D series are the workhorses of the lineup, offering a superior mechanical lifespan of 100M sliding cycles and 20M swinging/torsion cycles, designed for high-intensity robot arm and carrier applications.
Master Comparison Table
Cable Series | Primary Feature / Classification | UL Style | Rated Temp / Voltage | Conductor Size Range | Core/Pair Lineup | Mechanical Durability (Sliding / Swinging / Torsion) |
ORP-30F | Ultra-Slim (Internal) | 21103 | 105°C / 30V | 34 – 22 AWG | 2–10 Cores; 2–20 Pairs | 50M / 10M / 10M |
ORP-SL | Slim High-Flex | 2464 | 80°C / 300V | 0.05 – 0.5 mm² | 3–15 Cores; 1–20 Pairs | 100M / 20M / 20M |
ORP-SL 105°C | Slim Heat-Resistant | 2517 | 105°C / 300V | 0.05 – 0.5 mm² | 3–15 Cores; 1–20 Pairs | 100M / 20M / 20M |
ORP | Standard High-Flex | 2464 | 80°C / 300V | 0.2 – 0.5 mm² | 1 – 20 Pairs | 100M / 20M / 20M |
ORP-D | Power Supply (600V) | 2586 | 105°C / 600V | 0.5 – 5.5 mm² | 2 – 10 Cores | 100M / 20M / 20M |
ORP-TW | Torsion-Resistant | 2517 | 105°C / 300V | Pair-Based (Lineup focus) | 3 – 8 Pairs | (N/A) / (N/A) / 50M* |
*Note: ORP-TW mechanical durability is rated specifically for torsion at 50M cycles (500mm span) and 10M cycles (100mm span).
2. ORP-30F: Ultra-Slim High-Flex Series (Internal Equipment)
The ORP-30F series is the specialized solution for intra-equipment wiring where space constraints are absolute. By achieving a diameter reduction of up to 32% over conventional robot cables, it facilitates the design of compact robotic joints and high-density sensor arrays. This series is exceptionally versatile, featuring an extensive lineup of 224 distinct types.
- Primary Applications: Internal wiring for industrial robots, CNC machine tools, high-precision sensors, encoders, and miniaturized cable carriers.
- Environmental and Material Specifications:
Specification | Technical Detail |
UL Style | 21103 |
Rated Temperature | 105°C |
Rated Voltage | 30V |
Flame Retardancy | Horizontal Burning |
Jacket Material | Heat- and oil-resistant reinforced PVC (Black Matte) |
- Electrical and Dynamic Characteristics:
- Sliding Bending: 50 Million cycles.
- Swinging Bending: 10 Million cycles.
- Torsion (Twisting): 10 Million cycles.
- Structural Configurations:
- Conductor Range: 34 AWG to 22 AWG.
- Lineup: Layer-stranded (2–10 cores) and twisted-pair (2–20 pairs) configurations.
- Configuration Note: The 20-pair lineup is restricted to 24 AWG shielded models.
https://www.okidensen.co.jp/en/prod/cable/robot/orp30f.html
3. ORP-SL & ORP-SL 105°C: Slim High-Flex Series
The "Slim" series provides an average 20% diameter reduction compared to the standard ORP series, balancing miniaturization with high-cycle durability. To meet global compliance requirements, build-to-order UL Listing (CL 3) options are available for sizes 0.25 mm² through 0.5 mm².
- Comparative Specifications:
- ORP-SL: UL Style 2464, 80°C rating.
- ORP-SL 105°C: UL Style 2517, 105°C rating.
- Voltage: 300V (Common).
- Mechanical Durability:
- Sliding Bending: 100 Million cycles.
- Swinging Bending: 20 Million cycles.
- Torsion: 20 Million cycles.
- Structural Lineup:
- Conductor Range: 0.05 mm² to 0.5 mm².
- Configurations: Layer-stranded (3–15 cores) or twisted-pair (1–20 pairs).
https://www.okidensen.co.jp/en/prod/cable/robot/orpsl.html
https://www.okidensen.co.jp/en/prod/cable/robot/orpsl105C.html
4. ORP: Standard High-Flex Robot Cable Series
The standard ORP series (UL Style 2464/2466) is the baseline for high-flexibility automation applications. It is engineered for compatibility with the full spectrum of robot movement profiles.
- Electrical Profile (at 20°C):
- Conductor Resistance (0.2 mm² / 25 AWG): ≤ 105 Ω/km.
- Conductor Resistance (0.3 mm² / 23 AWG): ≤ 72 Ω/km.
- Conductor Resistance (0.5 mm² / 21 AWG): ≤ 44 Ω/km.
- Insulator Resistance: ≥ 100 MΩ-km.
- Withstand Voltage: AC 2000V (1-minute interval).
- Allowable Bending Radius (Standardized OKI Protocol):
- Fixed Parts: 4x Outer Diameter (OD).
- Moving Parts (Unshielded): 6x OD.
- Moving Parts (Shielded): 8x OD.
- Durability Ratings: 100M sliding, 20M swinging, 20M torsion.
https://www.okidensen.co.jp/en/prod/cable/robot/orp.html
5. ORP-D: High-Flex Power Supply Series (600V Rated)
The ORP-D series utilizes proprietary elastomer insulation to maintain a 600V rating within a physical diameter typically associated with 300V-class cables. Build-to-order UL Listing (CL 3) is supported for all sizes excluding 5.5 mm².
- Applications: Power supply for multi-axis arm robots, assembly/welding robots, carrier systems, and high-voltage carrier devices.
- Technical Performance Data:
Size (mm²) | AWG | Resistance (Ω/km) | Allowable Current (A) at 30°C |
0.5 | 21 | ≤ 40 | 9.2 |
0.75 | 19 | ≤ 26 | 12.2 |
1.25 | 17 | ≤ 16 | 17.3 |
2.0 | 15 | ≤ 9.3 | 23.6 |
3.5 | 12 | ≤ 5.3 | 35.8 |
5.5 | 10 | ≤ 3.4 | 48.9 |
*Note: 5.5 mm² is standardized as 10 AWG per industrial power specifications.
- Durability Ratings: 100M sliding, 20M swinging, 20M torsion.
https://www.okidensen.co.jp/en/prod/cable/robot/orpd.html
6. ORP-TW: Torsion-Resistant Series
The ORP-TW series is specifically engineered for multi-axis torsion stresses. It features specialized shielding and braiding to resist the internal "bird-caging" effects common in high-twisting environments.
- Mechanical Torsion Durability:
- 50 Million cycles: Performance validated at a 500mm span.
- 10 Million cycles: Performance validated at a 100mm span.
- Electrical and Material Constraints:
- UL Style: 2517.
- Ratings: 105°C, 300V.
- Lineup: Optimized for pair configurations (3 to 8 pairs).
https://www.okidensen.co.jp/en/prod/cable/robot/orptw.html
7. Standardized Testing and Material Guidelines
The entire ORP series shares a common technological foundation designed for high-performance industrial reliability.
Core Materials and Finish
- Special Elastomer Insulation: Proprietary OKI material that provides the requisite elastic memory and durability for high-flex cycles.
- Oil-Resistant PVC Jacket: Formulated for compatibility with industrial lubricants and cutting oils.
- Matte Finish: All cables feature a matte black finish to minimize surface friction and enhance aesthetics in professional robotic assemblies.
Standardized OKI Movement Performance Tests
All mechanical ratings are based on the following standardized test conditions:
- Sliding Bending: R = approx. 6x OD (30F utilizes 10x OD); 70 cycles/min; 350mm travel.
- Swinging Bending: R = approx. 8x OD; ±90° angle; 40 cycles/min; 4.9N load (2.94N for 30F).
- Twisting (Torsion): ±180° angle; 70 cycles/min; 500mm interval.
Important Technical Notice
All cycle counts, allowable currents, and bending radii provided in this report are calculated reference values derived from OKI's internal test methods. These data points are intended as selection guidelines and do not constitute an absolute guarantee of performance in every unique operating environment. Final cable selection should always be validated through field-specific stress testing.
- 
