Pilot stage rebuild
Pilot service on Rexroth 4WRPEH / 4WRSE and Moog servo bodies. Alignment and trim against documented procedures.
Toshiba Machine Servo Valve Repair
Independent third-party component-level repair of servo and proportional valves on Toshiba Machine (now Shibaura Machine) injection molding equipment: IS, DC, EC-SX, and IS-SXIII Hybrid platforms. Bosch Rexroth 4WRPEH / 4WRSE, Moog servo, and Yuken proportional bodies come through the bench.
Where These Valves Sit
Four Toshiba / Shibaura machine contexts
Below are the four common platforms seen at the bench across Toshiba Machine and Shibaura Machine generations.
01
IS series
Full hydraulic IMM 80-3000 tons (IS130GS through IS3000). Rexroth 4WRPEH / 4WRSE proportional, Moog servo, and Yuken bodies come off these for rebuild.
02
DC series
Die-casting and high-tonnage 450-4000 tons. Proportional and servo valves come through routinely.
03
EC-SX / EC-SXIII Hybrid
Electric-hydraulic hybrid 50-500 tons. Proportional valves come off these for rebuild.
04
IS-SXIII Hybrid
Hydraulic injection with electric drive assistance. Proportional valves come through routinely.
What NC Servo Does
Component-level repair on Toshiba / Shibaura valves
Each unit is opened, inspected, and rebuilt at the component level. Failed parts come from inventory or off donor units. Bench verification before ship.
Spool & sleeve service
Spool wear, contamination scoring, and lap restoration on the servo and proportional valve bodies that come off Toshiba / Shibaura machines.
Coil & electronics
Coil rebuild on Rexroth proportional valves, component-level board work on integrated electronics, and feedback-channel verification.
Bench testing
Hagen-Busch and older-style hydraulic stands. Hysteresis, null shift, and step response data on request.
Donor parts service
Aftermarket and donor parts for legacy Toshiba / Shibaura valves on older platforms.
Repair scope
Bench-level component work on the valve hardware. INJECTVISOR programming, machine parameter setup, and integration stay with the customer.
Brands
Toshiba / Shibaura valve brands
Top brands seen on Toshiba Machine and Shibaura Machine hydraulics. Click through for the dedicated brand page.
Common Faults
What usually shows up on Toshiba / Shibaura valves
Common failure modes seen on Toshiba / Shibaura valves at the bench.
| Spool contamination | Spool contamination, worn feedback sensors, and degraded coils on Rexroth 4WRPEH / 4WRSE and Moog servo bodies. |
|---|---|
| Internal leakage | Proportional valve internal leakage, spool stiction, and worn lap surfaces past the metering edges. |
| Hysteresis & dead-band | Servo valve dynamic response degradation, dead-band drift, and amplifier drift on aged bodies. |
| Coil & mechanical wear | Coil insulation breakdown and mechanical wear on closed-loop bodies after years of cycling. |
Workflow
From part number to ship-back
Same four-step path through the shop whether the unit came off a Toshiba IS or a Shibaura EC-SX hybrid.
- 01
Get in touch
Call or email with the part number, machine model, and a photo of the nameplate if it helps.
- 02
Bench review
Tech opens the unit, inspects pilot and spool, and runs it on the hydraulic stand to confirm what failed.
- 03
Cost & approval
We call back with the cost and a rough turnaround. Nothing is started without your sign-off.
- 04
Repair, test, ship
Failed components replaced from inventory or off donors, the valve verified under pressure, and shipped back.
FAQ
Common questions about Toshiba / Shibaura valve repair
Application-specific questions. For brand-specific FAQs, see the dedicated brand page above.
What proportional valve brands come off Toshiba / Shibaura machines?
Toshiba Machine and Shibaura Machine IS, DC, EC-SX, and IS-SXIII Hybrid platforms typically run Bosch Rexroth 4WRPEH and 4WRSE proportional valves, Moog servo valves on larger machines, and Yuken proportional valves on select configurations. All come off the bench for rebuild.
Can you repair valves on EC-SX and IS-SXIII hybrid machines?
Yes. Hybrid machines combine electric and hydraulic systems. Proportional valves come off the hydraulic side of these machines for rebuild.
What about INJECTVISOR-controlled valves?
INJECTVISOR is the Toshiba / Shibaura controller. The hydraulic valves it commands are commercial Rexroth, Moog, and Yuken bodies. NC Servo handles the valve hardware repair; INJECTVISOR parameter setup stays with the customer or OEM.
How long does a repair usually take?
Lead time varies job to job, partly because parts are often pulled from donor boards. Give us a call with the part number and the situation.
Do you provide Toshiba / Shibaura machine programming?
No. NC Servo handles bench-level component repair on the valve hardware only. INJECTVISOR programming, parameter setup, and integration stay with the customer or OEM.
What if the valve is beyond economic repair?
If the valve is not fixable, we will let you know and help source a replacement.
What is the warranty?
One year on parts and workmanship for repairs and rebuilt units. Standard exclusions apply for contamination, improper installation, and out-of-spec operation.
More from NC Servo
Related repair coverage
Other injection-molding pages and the brand pages most-tied to Toshiba / Shibaura hydraulics.
IMM hub
All injection molding builders we cover, plus shared hydraulics context.
UBE
Other Japanese IMM coverage with similar Moog and Rexroth hardware.
Nagata
Other Japanese IMM hydraulic coverage.
Bosch Rexroth
Rexroth 4WRPEH, 4WRSE, and proportional valve coverage.
Moog brand page
Moog D661, D662, and broader Moog servo valve hardware.
Valve repair hub
Full directory of 20+ valve brands.
What is a servo valve?
Plain-English explainer on electrohydraulic servo valves and how they relate to proportional hardware.
What is a proportional valve?
How proportional and servoproportional valves differ from true servo valves, and what gets done at the bench.
Toshiba valve down? Send a part number
Give us a call or send a part number with the machine model and the symptom. We'll check the donor pool, suggest a rebuilt match if we have one, and walk through repair or cross-brand options if we don't.