Bosch Rexroth HVR02.2-W025N Power Supply Unit – Obsolete HVR Series Spare Part

Technical Dossier

Product Details And Specifications

Bosch Rexroth HVR02.2-W025N Power Supply Unit – Obsolete HVR Series Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Specific electrical parameters (input voltage range, output power rating, bus capacitance) are confirmed at time of order. DriveKNMS does not publish unverified specifications — accuracy of electrical data is a safety requirement for drive system integration.

Solving the Discontinued Hardware Crisis

The HVR02.2-W025N occupies a non-negotiable position in Rexroth's legacy regenerative drive topology. It serves as the central DC bus supply for multi-axis servo systems, managing energy recovery from braking axes back into the bus — a function that cannot be replicated by a standard non-regenerative supply without significant electrical redesign. Facilities running DIAX04 or early IndraDrive configurations built around this power supply face a hard constraint: the entire axis group is architecturally dependent on this unit.

Condition & Reliability Assurance

DriveKNMS applies a five-stage quality process to every HVR02.2-W025N unit before it leaves our facility:

• Electrolytic Capacitor Assessment: Capacitor aging is the primary failure mode in power electronics stored beyond five years. Each unit undergoes ESR (Equivalent Series Resistance) measurement and visual inspection for bulging, leakage, or thermal discoloration. Units with degraded capacitors are either recapped with specification-matched components or quarantined.
• Firmware Version Verification: Where applicable, firmware revision is confirmed against known-compatible versions for target drive families. Mismatched firmware between power supply and drive modules is a documented source of fault codes and communication errors.
• Pin and Connector Inspection: All interface connectors, bus bar contact surfaces, and signal terminals are inspected under magnification for oxidation, corrosion, and mechanical deformation. Contact surfaces are cleaned and treated where required.
• Functional Power-On Test: Units are bench-tested under controlled load conditions to verify DC bus output stability, fault relay behavior, and communication interface response.
• Final Documentation: Each unit ships with a condition report noting test results, any remediation performed, and the firmware version confirmed.

Key Features for System Maintenance

• Drop-in replacement: The HVR02.2-W025N installs directly into existing Rexroth drive cabinets without mechanical modification. Mounting dimensions, connector pinouts, and bus bar interfaces are identical to the original production unit.
• No reprogramming required: Drive axis parameters, machine programs, and PLC configurations remain untouched. Replacement does not trigger a requalification requirement under most maintenance protocols.
• Avoids engineering reconstruction costs: Migrating away from HVR-based architecture requires new cabinet design, new drive selection, new cabling, and full system requalification — a project that typically runs six to eighteen months and carries substantial engineering labor costs. A verified spare eliminates that path entirely for the duration of the asset's planned service life.
• Supports long-term spares strategy: Facilities managing planned obsolescence programs can acquire multiple units now while RFQ-reviewed sourcing status remains available, establishing a controlled runway for system retirement on their own schedule.

Should I buy more than one unit?
For any system where the HVR02.2-W025N is a single point of failure, holding at least one cold spare is a minimum prudent position. For facilities with multiple axes on a shared DC bus, two units is a more defensible posture. Secondary market availability for this part will not improve over time.