KUKA 1KR500-R2830-F 00-170-721 Servo Motor – Obsolete KR500 Spare Part

Technical Dossier

Product Details And Specifications

KUKA 1KR500-R2830-F 00-170-721 Servo Motor – Obsolete KR500 Spare Part

A single failed axis drive motor on a KUKA KR500 heavy-payload robot does not represent a component cost — it represents a production stoppage decision. Replacing a KR500 robot cell, including mechanical re-integration, safety re-certification, PLC reprogramming, and operator retraining, routinely exceeds USD $800,000 to $2,000,000 per line. The KUKA 1KR500-R2830-F 00-170-721 servo motor is a discontinued axis drive unit specific to the KR500 R2830 series. When this part fails and no replacement is on hand, plant management faces a forced choice between an unplanned capital expenditure and an extended production halt. DriveKNMS maintains verified stock of this motor to eliminate that forced choice.

Technical Specifications

Note: Electrical parameters (rated torque, rated speed, encoder resolution) are not published here to prevent misapplication. Confirm your exact axis assignment and controller firmware version before ordering. Our technical team will cross-verify prior to shipment.

Solving the Discontinued Hardware Crisis

The KUKA KR500 R2830 platform was deployed extensively in automotive body-in-white, press-tending, and heavy-material-handling lines from the mid-2000s through the early 2010s. Many of these installations remain in active production because the mechanical structure and load capacity of the KR500 have not been matched by successor models at equivalent capital cost. The axis servo motors — particularly the 1KR500-R2830-F series — are the highest-wear rotating components in these robots. KUKA ceased OEM supply of this motor series, and authorized distributors have exhausted their buffer stock.

The consequence is straightforward: a plant running three or four KR500 cells with no spare axis motors is operating with an unquantified liability on its balance sheet. The moment one motor fails, the cell goes dark. Lead times for reverse-engineered or refurbished equivalents from non-specialist sources range from 8 to 20 weeks — an interval that no automotive or heavy-industry production schedule can absorb without financial damage.

DriveKNMS sources, inspects, and holds physical inventory of this motor specifically because the demand is real and the OEM supply chain is closed. Procurement managers and maintenance engineers who have located this page are already past the point of theoretical planning — they need a unit that ships.

How Sourcing This Part Extends Asset Life by 5–10 Years

The decision to maintain a KUKA KR500 line rather than replace it is a capital allocation decision, not a maintenance decision. A KR500 cell with a functional mechanical structure, calibrated base frame, and intact wiring harness retains full production capability. The servo motor is a field-replaceable unit. Replacing it costs a fraction of one percent of the cell's original installed value.

Plant managers facing system retirement pressure from corporate asset teams should document the following when building the case for continued operation: (1) the robot's current cycle count versus its rated mechanical life, (2) the cost of the specific spare parts required to sustain operation for the next 60 months, and (3) the capital cost and production downtime of a replacement cell. In most cases, a structured spare-parts procurement program — covering axis motors, RDC boards, and KSP power supplies — extends the productive life of a KR500 installation by 5 to 10 years at a total cost below 8% of replacement capital. The 1KR500-R2830-F 00-170-721 motor is the single most critical component in that program.

Condition & Reliability Assurance

Every 1KR500-R2830-F 00-170-721 unit processed by DriveKNMS passes a five-stage inspection protocol before it is offered for sale:

1. Electrolytic Capacitor Assessment — Internal capacitors are tested for capacitance drift and ESR degradation. Units with capacitors outside tolerance are either recapped or rejected. Capacitor failure is the primary cause of servo drive instability in motors stored beyond five years.

2. Encoder and Feedback Integrity Check — The resolver or encoder assembly is verified for signal continuity and output accuracy. A degraded feedback signal produces axis positioning errors that are frequently misdiagnosed as controller faults.

3. Winding Resistance and Insulation Test — Phase-to-phase resistance is measured and compared against reference values. Insulation resistance is tested at rated voltage to confirm winding integrity.

4. Shaft and Bearing Inspection — Shaft runout is measured. Bearings are assessed for play and rotational noise. Units with bearing wear are relubricated or rebearinged before release.

5. Pin and Connector Corrosion Audit — All connector pins are inspected under magnification for oxidation, fretting corrosion, and mechanical deformation. Affected pins are cleaned or replaced. Connector housings are verified against KUKA mating specifications.

Units that pass all five stages are classified as Certified Refurbished. Units in original, unopened OEM packaging are classified as New Old Stock (NOS) and are offered separately. Condition is stated explicitly on every quotation.

Key Features for System Maintenance

Drop-in replacement: The 1KR500-R2830-F 00-170-721 is a direct mechanical and electrical substitute for the original installed unit. No modifications to the robot's mechanical structure, cable routing, or KRC4 controller configuration are required.

No reprogramming required: The KRC4 controller identifies the motor through the resolver feedback and the axis-specific mastering data stored in the controller. Replacing the motor and re-mastering the axis — a procedure that takes under two hours for a qualified KUKA technician — restores full operation. There is no firmware change, no safety parameter reset, and no production program modification.

Avoids engineering reconstruction costs: Integrating a replacement robot cell requires mechanical alignment, load testing, safety fence recertification, and production program re-validation. Depending on the application, this process takes 4 to 12 weeks and requires external engineering resources. A motor swap eliminates this cost entirely.

FAQ

What warranty applies to a discontinued part?
DriveKNMS provides a 90-day functional warranty on all Certified Refurbished units and a 180-day warranty on New Old Stock units. The warranty covers failure under normal operating conditions and excludes damage from installation error or electrical overstress.

How do I confirm the unit is genuine KUKA and not a counterfeit?
All units are supplied with photographic documentation of the nameplate, serial number, and connector configuration. NOS units include original KUKA packaging with intact seals. Refurbished units include a DriveKNMS inspection certificate with technician sign-off. We do not source from unverified brokers.

Should I purchase more than one unit?
If your facility operates more than one KR500 R2830 cell, holding a minimum of one spare motor per two cells is standard practice for critical-asset maintenance programs. Given that OEM supply is permanently closed, the cost of a second unit today is fixed. The cost of sourcing one under emergency conditions in 18 months is not. We can discuss volume pricing for multi-unit orders.

Can you source other KR500 spare parts?
Yes. DriveKNMS specializes in the full KR500 R2830 spare parts ecosystem, including KRC4 controller boards, KSP power supplies, RDC resolver-to-digital converter boards, and axis-specific cable assemblies. Contact us with your complete parts list.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.