German Servo Amplifier Service
Heldt & Rossi Servo Amplifier Repair & Sales
We repair and sell Heldt & Rossi servo amplifiers, servo drives, and operational transistor servo systems. Access over 19,000 units in stock. Repair includes in-house testing; lead times vary by model and workload for these vintage German-manufactured components.
Vintage Servo Amplifier Specialists
Heldt & Rossi Servo Amplifier Repair & Sales
NC Servo Technology has serviced Heldt & Rossi servo amplifiers and electronic controls for nearly 50 years. As an independent servo controller and amplifier repair provider, we offer service for these vintage German-manufactured components that original manufacturers no longer support.
We diagnose, rebuild, and test Heldt & Rossi DC servo amplifiers including the 807E series and SM 807 DC operational transistor servo units. Our technicians service discontinued components that OEMs no longer support. Looking for Heldt & Rossi valve repair? While Heldt & Rossi specialized in servo amplifiers, we service valves from all major manufacturers — visit our valve repair hub.
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Service Offerings
What We Repair
Heldt & Rossi DC Servo Amplifier Repair & Sales
Rebuild services and refurbished units for Heldt & Rossi DC servo amplifiers including the 801, 807E, and 808 series. Component replacement, testing, and functional verification. Stock available from our 19,000+ unit inventory.
Operational Transistor Servo Systems
Service for Heldt & Rossi operational transistor servo systems including the SM 807 DC series. Component repair, testing, and performance verification. Refurbished units ready for shipment.
Documentation Options
Repair notes and test summaries are available to help document service results as needed.
Technical Capabilities
Why Choose NC Servo for Heldt & Rossi Repairs
Our technicians have decades of experience servicing vintage servo amplifiers from multiple manufacturers.
- Service Heldt & Rossi amplifiers alongside modern servo drives and electronic controls from multiple manufacturers.
- Cross-reference servo drive capabilities when sourcing alternatives for discontinued Heldt & Rossi models.
- Testing capabilities for vintage DC servo amplifier systems.
Quality Assurance
Testing Every Heldt & Rossi Amplifier
Every Heldt & Rossi amplifier is tested before shipment.
- Our testing infrastructure includes specialized equipment capable of verifying DC servo amplifier performance.
- We verify output characteristics, response time, and amplifier performance across the unit's operating range.
- Heldt & Rossi amplifiers are tested to ensure proper operation before shipment.
Product Families
Heldt & Rossi Amplifier Series We Service
We repair Heldt & Rossi servo amplifiers and servo drives across multiple product families including German-manufactured DC servo amplifiers.
- 801 Series: DC servo amplifiers for compact industrial applications.
- 807E Series: DC servo amplifiers with stacked design for industrial servo applications.
- 808 Series: Higher-power DC servo amplifiers for demanding industrial drives.
- SM 807 DC: Operational transistor servo amplifiers with clear casing design, manufactured in West Germany.
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Request a Quote for Heldt & Rossi Amplifier Repair
Send us your Heldt & Rossi amplifier model number and we'll provide accurate pricing after diagnostics.
Get Your QuoteTechnical Guides
Related Technical Resources
Use these guides for troubleshooting and repair planning before finalizing a quote request.
Common Questions