7G1.5 7-Core 1.5mm² Servo Cable

A single axis of motion can stall an entire production line. Not because the drive failed — but because the signal from the encoder never reached it, scattered by electrical noise on a sub-standard cable. Your inventory valuation spikes when you stock cables that can’t survive a cable track. The 7G1.5 servo cable exists to eliminate these two costly variables. It delivers consistent, low-attenuation transmission between drive and motor, and it stays intact under the mechanical stress of automated operations. Less unplanned downtime, fewer emergency re-stocks.

Signal Integrity Under Mechanical Load

• Double-shielded construction (braid + foil): Attenuates both near-field EMI and high-frequency RFI from adjacent power lines. The low surface transfer impedance means encoder feedback reaches the drive with no bit errors — critical when positioning tolerances are under 10 microns. Reduced rejected parts on high-precision machining centers.
• Stranded bare copper conductors, 7 x 1.5 mm²: Fine wire stranding keeps conductor resistance low under continuous flexing. Less heat build-up when the servo accelerates and decelerates. That avoids insulation softening, a common root cause of phase-to-phase shorts after six months of hard use.
• Mechanically optimized lay length: Core twisting follows a short lay length design to distribute bending stress evenly across all seven conductors. The result is a long flex life in cable chains — fewer line stoppages for cable replacement, lower maintenance labor cost per year of operation.
• Industrial-grade outer jacket compound: Oil-resistant, coolant-resistant, and flame-retardant. It won’t swell or crack in machine tool sumps or injection moulding cells. One less variable to manage in a dusty, wet, chemically aggressive plant environment.

Technical Specifications & Dimensions

Known parameters from the part number configuration. For full electrical and mechanical data, request the engineering datasheet.

For conductor resistance, capacitance between cores, inductance, shield coverage factor, outer diameter, weight per meter, and minimum bending radius — contact our application engineers with your specific length and routing requirements. This part number is available in multiple mechanical variants (static, flexing, torsion) depending on the installation.

Industry Applications & Scenario Validation

• CNC machining centers. The cable connects the servo drive to the spindle and axis motors. It withstands continuous flexing in cable carriers while blocking stray currents from VFD-controlled pumps — ensuring tool path accuracy doesn’t degrade.
• Packaging and pick-and-place robotics. Fast, short-stroke reciprocating motion generates extreme mechanical stress. The 7-core configuration consolidates power and signal transmission, reducing snag points and simplifying cable management on multi-axis robots.
• Automated guided vehicles (AGVs) and mobile logistics equipment. A single cable that handles both motor power phases and brake/encoder signals means lighter trailing cable bundles. Lower weight reduces drive motor peak current demand and extends battery life per shift.
• Injection moulding and die-casting. Hydraulic fluid mist, mould release sprays, and high ambient temperatures destroy standard PVC cables. This cable’s jacket compound and shielding prevent absorbed fluids from reaching conductor insulation, eliminating hard-to-diagnose intermittent earth faults.
• Wind turbine pitch and yaw control. Inside the nacelle, cable twisting and constant vibration are unavoidable. The shielding integrity prevents induced noise from the generator busbars coupling onto control signals — a critical factor for pitch-angle precision and turbine uptime.

International Compliance & QA Standards

Products sourced through this certified supplier undergo routine testing and documentation review. The following standards are relevant to this cable family. Confirm specific certificates with your request for quotation.

• ✅ IEC 60228 — Conductors of insulated cables – class 5 flexible copper conductors
• ✅ EN 50288-2-1 / EN 50288-2-2 — Multi-element metallic cables for instrumentation
• ✅ IEC 60332-1-2 — Flame retardance for a single insulated conductor/cable
• ✅ IEC 61034-2 — Smoke density measurement
• ✅ RoHS Directive 2011/65/EU — Restriction of hazardous substances
• ✅ ISO 9001:2015 — Quality management system at the manufacturing site
• ✅ CE marking — Conformity with applicable EU health, safety, and environmental directives

FAQ

What is the exact outer diameter and bending radius of the 7G1.5 servo cable?

The “7G1.5” designation specifies the core count and cross-section. Outer diameter and minimum bending radius vary depending on whether the cable is ordered for static routing, continuous flexing, or torsional applications. A cable for a cable track rated for 5 million cycles will have a different mechanical construction than a fixed-installation variant. Share the cable track length, bend radius, and acceleration data on your application. Engineering will match you to the correct version and provide the specific dimensions.

Can this cable handle both power and encoder signals, or is it a power-only cable?

The 7-core 1.5 mm² configuration is typically used as a hybrid, combining power phases (4 cores) with brake and/or temperature sensor conductors (2 cores) plus a protective earth. It is not intended for low-level incremental encoder signals (those require dedicated twisted pairs with individual shielding). If your servo drive sends absolute digital encoder communication over a single twisted pair, we can discuss pair assignment options. Always confirm the pin assignment with your drive manufacturer before ordering.

What is the standard lead time and minimum order quantity (MOQ)?

Standard stock programs for common lengths cover short lead times. For custom lengths, voltage ratings, or jacket compounds (PUR, TPE, LSZH), lead time is typically 3–4 weeks. MOQ varies by configuration — standard designs start at 200 meters. Send your annual usage forecast. Larger volumes unlock dedicated production slots and fixed-monthly call-off schedules that reduce your warehousing cost.

Discuss Your Application with a Product Engineer

Send the cable track layout and drive model numbers on your next project. We’ll cross-reference the mechanical load profile against the cable’s tested flex cycle data and return a stocked or custom recommendation that fits your machine’s planned maintenance interval. Use the enquiry form or email quoting “7G1.5 servo cable” to skip the general queue.