Okuma LAW Series Wheel Lathe Repair & Support

LAW Series Models & Specifications

Each model targets a different combination of wheel size and production volume.

Which OSP Control Does the LAW Series Use?

Older LAW-V24 machines were commonly fitted with Okuma’s THINC-OSP architecture, roughly equivalent to the OSP-P200 generation. Current LAW-V24 and LAW-2S machines run a standard OSP control with 4-axis simultaneous-turning programming built in — Okuma specifically markets this as removing the need for “zero return” between operations, which matters directly for wheel cycle times since every extra reference move adds up across thousands of parts.

Because Okuma also builds and sells FANUC-controlled machine tools more broadly, it’s worth confirming which control is fitted to your specific LAW machine before ordering parts, the same way we recommend on the V Series — most LAW machines we see are OSP-equipped, but checking the nameplate first avoids any surprises. This is especially worth doing on machines that have changed hands or been relocated since original purchase, since documentation doesn’t always travel with the machine.

Common LAW Series Faults We Repair

Continuous, high-volume wheel production puts a distinctive set of demands on this line, and dual-turret models add their own diagnostic complexity.

Dual-turret synchronization faults (LAW-2S, LAW-V24)

Because both turrets are meant to cut simultaneously to hit the LAW Series’ headline cycle-time advantage, timing drift between them shows up as inconsistent finish quality or near-miss alarms rather than a hard stop. We isolate which turret’s drive or feedback is actually out of tolerance before assuming a control-level synchronization fault, since replacing the wrong turret’s components fixes nothing and costs the client both time and money.

Spindle drive faults under continuous wheel production

High-volume, near-continuous wheel machining puts steady thermal and electrical load on the spindle drive. RPM instability, overheat trips and unusual noise are most often a drive fault rather than a bearing issue, given how robust these spindles are built for exactly this duty cycle — we bench-test the drive before recommending mechanical work.

Auto chuck-changing system faults (LAW-V24)

On LAW-V24 machines with the optional auto chuck-changing system fitted, positioning and clamping faults during a changeover are usually a sensor or actuator issue in the change mechanism itself rather than a spindle or control fault — a distinction that matters, since misdiagnosing this as a spindle problem leads to unnecessary spindle work.

Turret indexing faults (all models)

On the LAW-F II especially, where fast turret index is the machine’s headline productivity feature, indexing delays or missed positions directly cost cycle time — these are almost always mechanical or sensor issues in the turret itself rather than control faults.

Display and operator panel faults

Standard OSP or THINC-OSP panel and display faults follow the same repair pattern as other Okuma lathes, depending on the control generation actually fitted.

Given how much a LAW Series machine typically contributes to a wheel-production line’s total output, we prioritize a fast, correct diagnosis over guesswork — see our fault analysis and testing & diagnostics services for more on our approach.

Where We Support LAW Series Machines

CNC Elektronik is based in Germany, at the heart of Europe’s automotive wheel supply chain, so LAW Series repair work is a routine, recurring part of what we do.

We’ve also supported LAW Series repair work in Brazil, where aluminum wheel production for both domestic and export markets makes dedicated wheel lathes a fixture in the automotive supply chain. The process is the same regardless of distance: isolate the failing turret, spindle, or control component through bench testing, repair or replace it, and confirm the machine under real production load — including checking dual-turret synchronization where relevant — before it returns to service. Given how many wheels a single LAW Series machine can push through in a shift, even a brief unplanned stoppage represents a meaningful volume of missed production, which is why we treat these repairs with the same urgency the client’s production schedule demands.

See our Countries We Serve page for our full regional coverage across Europe, the Americas, and parts of Asia and the Middle East.

Frequently Asked Questions