NEGRI BOSSI-ITALY Repair Services India
Negri Bossi is a world-renowned Italian manufacturer of injection moulding machines and thermoplastic processing equipment. Founded in 1954, the company has built a reputation for precision engineering, high-speed moulding solutions, and advanced automation. Negri Bossi machines are widely deployed across Indian polymer processing, automotive component manufacturing, and consumer goods production sectors, where reliability and uptime are critical.
Negri Bossi is a world-renowned Italian manufacturer of injection moulding machines and thermoplastic processing equipment. Founded in 1954, the company has built a reputation for precision engineering, high-speed moulding solutions, and advanced automation. Negri Bossi machines are widely deployed across Indian polymer processing, automotive component manufacturing, and consumer goods production sectors, where reliability and uptime are critical.
Synchronics repairs Negri Bossi injection moulding machine electronics, control systems, and servo-hydraulic components with deep expertise. We service Negri Bossi hydraulic control units, proportional valve drivers, PLC modules, and motion control boards across all series. Our 180+ engineers have 25+ years of hands-on experience restoring Negri Bossi equipment to factory performance, minimizing production downtime for Indian plastics manufacturers.
Expert Negri Bossi injection moulding electronics repair across India since 1994.
NEGRI BOSSI-ITALY Equipment We Repair — By Category
NEGRI BOSSI-ITALY Product Lines We Repair
Our engineers are trained on the full NEGRI BOSSI-ITALY product range. Below are the major product families we service.
Negri Bossi Hydraulic Control Systems
Proportional valve driver boards, proportional directional control electronics, and pressure relief valve controllers used in Negri Bossi servo-hydraulic moulding machines. Common faults include proportional solenoid driver failures and hydraulic feedback sensor losses.
Negri Bossi PLC and Motion Control Boards
Programmable logic controllers and motion control electronics managing machine cycle timing, clamp force regulation, injection pressure profiles, and core pull sequences. Faults include processor failures, input/output card degradation, and program memory corruption.
Negri Bossi Servo Amplifier and Motor Drive Units
Servo amplifier boards controlling stepper and servo motors for core pulling, rotation, and auxiliary axis actuation on Negri Bossi all-electric and hybrid moulding systems. MOSFET failures and encoder communication loss are prevalent issues.
Negri Bossi Temperature Controller and Heater Band Electronics
Temperature control cards managing barrel zone heating, mould temperature circuits, and thermal sensor inputs across Negri Bossi moulding units. Relay failures, thermal sensor disconnection, and SSR burnout commonly occur in high-temperature zones.
Negri Bossi Mould Ejector and Core Pull Control Systems
Ejector timing control boards, core pull solenoid drivers, and mechanical limit switch interface modules ensuring synchronized ejector and core motion. Solenoid driver shorts and timing relay sticking are frequent failure modes.
Negri Bossi Pressure Transducer and Feedback Interface Cards
Analog signal conditioning boards for machine pressure monitoring, part weight feedback, injection hold time sensors, and cavity pressure inputs. Ground faults, connector oxidation, and analog circuit leakage are common repair scenarios.
Why Choose Synchronics for NEGRI BOSSI-ITALY Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on NEGRI BOSSI-ITALY equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common NEGRI BOSSI-ITALY Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in NEGRI BOSSI-ITALY equipment arriving at our workshop.
- ✓Proportional solenoid driver MOSFET burnout — Negri Bossi proportional valve drivers operate under continuous high-current stress during injection and hold phases. MOSFET failures occur due to thermal cycling, inadequate heatsinking, and transient voltage spikes from sudden spool reversals.
- ✓PLC processor memory corruption or boot failure — Negri Bossi PLC modules suffer memory errors due to power supply voltage ripple, electromagnetic interference from servo motors and solenoid coils, or failed backup battery cells. Corrupted program memory prevents machine cycle initialization.
- ✓Servo motor encoder communication loss — Negri Bossi servo encoder cables degrade from oil vapor exposure and thermal cycling near barrel heater zones. Intermittent encoder signals or complete signal loss prevent closed-loop motor control, causing jerky core pull motion and positioning errors.
- ✓Temperature controller zone feedback sensor disconnection — Negri Bossi thermocouple and RTD sensor leads work loose from vibration and thermal expansion cycling in the machine frame. Open sensor circuits force zone heaters into on-off control, causing temperature swings and part quality degradation.
- ✓Ejector timing relay chatter and solenoid driver sticking — Negri Bossi ejector solenoid coils are energized at high frequency during fast cycles (up to 60 cycles per minute). Relay contacts erode, solenoid plungers stick due to plastic debris, and driver output transistors fail from sustained holding current.
- ✓Pressure transducer signal drift and analog noise — Negri Bossi cavity pressure and machine pressure transducers experience zero-point drift and noise coupling due to loose sensor ground connections, failing sensor power supply filtering, or internal sensor element fatigue in high-cycle applications.
How We Repair Your NEGRI BOSSI-ITALY Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using NEGRI BOSSI-ITALY Equipment
We serve plant maintenance teams across all major industries where NEGRI BOSSI-ITALY automation is deployed.
Frequently Asked Questions — NEGRI BOSSI-ITALY Repairs
Do you repair Negri Bossi injection moulding machine electronics anywhere in India?+
Yes. Synchronics repairs the complete Negri Bossi product range including hydraulic control systems, PLC modules, servo amplifiers, temperature controllers, ejector drivers, and sensor interface cards. We offer door-to-door pickup from Mumbai, Delhi, Pune, Bangalore, Chennai, Hyderabad, Ahmedabad, Surat, and across India. All repairs are completed at our main facility in Vadodara, Gujarat with a standard 5-7 day turnaround.
What Negri Bossi proportional valve driver faults can Synchronics repair?+
Synchronics repairs MOSFET burnout, gate drive circuit failures, proportional solenoid coil opens, proportional spool centering spring failures, and feedback signal loss in Negri Bossi proportional directional valve drivers. We test proportional response linearity (typically 0-10V input to 0-100% spool position) and confirm stable performance across fast and slow injection phases before return.
Can Synchronics reprogram Negri Bossi PLC modules if the program is corrupted?+
Negri Bossi PLC program recovery depends on availability of the original program file from the machine builder or customer backup. If the program is available, Synchronics reprograms the PLC with full cycle validation. If no backup exists, we assist with reverse-engineering the cycle logic by observing machine behavior or obtaining the program from Negri Bossi service directly. Hardware troubleshooting (power supply, backup battery, CPU socket cleanliness) is always performed in parallel.
How do I know if my Negri Bossi machine has a servo motor encoder problem?+
Common signs of Negri Bossi servo encoder failure include jerky or incomplete core pull motion, core pull solenoid holding longer than expected, position error codes on the machine display, or loss of synchronized rotation on rotary tables. Synchronics tests encoder signal quality with an oscilloscope and compares measured motor velocity against commanded velocity to isolate encoder vs. motor drive faults. We then supply the appropriate replacement cable or encoder unit.
Why does my Negri Bossi barrel zone temperature fluctuate wildly?+
Temperature swings in Negri Bossi barrel zones are typically caused by open or intermittent thermocouple connections, failed temperature control relay contacts cycling rapidly, or a defective SSR (solid-state relay) in the heater band driver. Synchronics visually inspects all sensor connections, tests thermocouple resistance, measures SSR control voltage and output, and verifies temperature controller board calibration. We replace failed components and stabilize zone temperature to within +/- 2 degrees Celsius during production run.
How do I send my NEGRI BOSSI-ITALY unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a NEGRI BOSSI-ITALY drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on NEGRI BOSSI-ITALY repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your NEGRI BOSSI-ITALY unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
NEGRI BOSSI-ITALY Repair Catalog
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Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
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48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service