Bosch Rexroth VT3006-36 Amplifier Card – Obsolete VT Series Spare Part

Technical Dossier

Product Details And Specifications

Bosch Rexroth VT3006-36 Amplifier Card – Obsolete VT Series Spare Part

When a Bosch Rexroth VT3006-36 amplifier card fails in a proportional hydraulic control system, the consequences extend far beyond a single component. The VT3006-36 is the signal conditioning and command interface between the machine controller and the proportional directional valve. Without it, the entire hydraulic axis loses closed-loop authority. For press lines, injection molding machines, and steel mill roll-gap control systems built around Bosch Rexroth's legacy VT series architecture, there is no modern drop-in substitute that does not require re-engineering the valve wiring, re-parameterizing the controller, and re-commissioning the axis — a process that routinely costs $80,000–$300,000 USD in engineering labor, downtime, and production loss. DriveKNMS holds verified physical stock of the VT3006-36. This is not a catalog listing. Securing one unit today is the difference between a four-hour swap and a four-month capital project.

Technical Specifications

Note: Electrical parameters such as supply voltage, enable signal logic, and command input range vary by sub-variant and machine configuration. DriveKNMS will confirm exact specifications against your machine documentation prior to shipment. No parameters are assumed or fabricated.

Solving the Discontinued Hardware Crisis

Bosch Rexroth discontinued the VT3006-36 as part of the broader retirement of the VT amplifier card platform. The replacement ecosystem — the VT-HACD and VT-VSPA2 series — requires different wiring harnesses, different parameterization tools, and in most cases a different valve body. For a factory running 12 hydraulic axes on a 1990s-era transfer press, that is not a component swap. That is a capital project requiring mechanical, electrical, and controls engineering resources simultaneously.

The industrial reality is that most plant engineering teams do not have the bandwidth or budget to execute that project on an emergency timeline. The VT3006-36 exists in a category of parts where a single working unit, installed in under four hours by an in-house technician, restores full production capacity. The alternative — a forced system upgrade — typically takes 3 to 6 months from approval to commissioning.

Factories that have extended the service life of their legacy Bosch Rexroth hydraulic systems by 5 to 10 years have done so through a deliberate spare parts strategy: identifying the three to five amplifier cards and valve drivers that represent single points of failure, and holding at least one verified spare for each. The VT3006-36 is consistently on that list. Its failure mode is not gradual — proportional amplifier cards tend to fail hard, without warning, often due to electrolytic capacitor degradation after 15–20 years of continuous operation. A plant that has not addressed this exposure is carrying unquantified production risk on every shift.

The cost of one VT3006-36 spare, held in a climate-controlled cabinet, is a fraction of one hour of unplanned downtime on a production line it protects. This is not a procurement decision. It is a risk management decision.

Condition & Reliability Assurance

DriveKNMS applies a 5-step quality assurance process to all obsolete amplifier cards before shipment:

• Step 1 – Visual and Physical Inspection: Full board inspection for mechanical damage, burnt components, cracked solder joints, and PCB delamination.
• Step 2 – Electrolytic Capacitor Assessment: Capacitors are the primary failure point in aged amplifier cards. Each unit is assessed for capacitor bulging, leakage, and ESR deviation. Where degradation is confirmed, capacitors are replaced with specification-matched components.
• Step 3 – Firmware and Configuration Version Verification: The firmware version and any onboard DIP switch or potentiometer settings are documented and cross-referenced against the customer's machine documentation where provided.
• Step 4 – Pin and Connector Inspection: All edge connector pins and terminal blocks are inspected for oxidation, corrosion, and mechanical deformation. Affected contacts are cleaned or replaced.
• Step 5 – Functional Bench Test: Where test fixtures are available, the card is powered and signal-tested prior to packaging. Test results are documented and included with shipment.

Units are classified as New Old Stock (NOS), Tested Refurbished, or Tested Used, and labeled accordingly. The classification is disclosed in full before order confirmation.

Key Features for System Maintenance

• Drop-in replacement: The VT3006-36 installs into the existing card rack without modification to the rack, backplane, or valve wiring.
• No reprogramming required: The card retains the same command interface as the original. No changes to the PLC program, HMI, or motion controller are required.
• Avoids engineering reconstruction costs: Replacing this card eliminates the need for a system re-engineering project. The machine returns to its validated, commissioned state.
• Preserves machine certification: In regulated industries, replacing a like-for-like component does not trigger re-certification requirements. A system upgrade typically does.
• Protects production schedules: A verified spare on the shelf converts a potential multi-week outage into a same-shift repair.

FAQ

What warranty applies to an obsolete part like the VT3006-36?
DriveKNMS provides a 90-day warranty covering functional failure under normal operating conditions. Warranty terms are confirmed in writing at the time of order.

How do I know the unit is genuine and not counterfeit?
All units sourced by DriveKNMS are traceable to documented supply chains. We do not source from unverified brokers. Physical markings, date codes, and board revisions are inspected and documented. Customers may request inspection photos prior to shipment.

Should I buy more than one unit?
For any machine with more than one VT3006-36 installed, holding a minimum of one spare per machine is the standard recommendation. For critical production lines with no backup machine, holding two spares is justified. The VT3006-36 is no longer manufactured. Once existing global stock is exhausted, there is no further supply.

Can DriveKNMS source other VT series amplifier cards?
Yes. DriveKNMS specializes in the full Bosch Rexroth VT amplifier card series and related obsolete hydraulic control components. Contact us with your part number for availability.