Independent third-party component-level repair of servo and proportional valves used on Bekum blow molding machines. Moog D661 and G761 servo bodies, plus Rexroth and Parker proportional valves, come off BM, BA / BAE, BW, and legacy H-series machines for rebuild.
Each unit is opened, inspected, and rebuilt at the component level. Failed parts come from inventory or off donor units. Bench verification before ship.
N210
Pilot stage rebuild
Torque motor pilot stages, nozzle flapper, and pilot trim cleaned and aligned against documented procedures on Moog D661 and G761 valves.
N220
Spool & sleeve service
Spool wear, contamination scoring, and lap restoration on the valve bodies that come off Bekum machines.
N230
Coil & feedback work
Burned coil rebuild, feedback wire repair, and LVDT verification on closed-loop servo valve bodies.
N240
Bench testing
Hagenbusch and older-style hydraulic stands. Hysteresis, null shift, and step response data available for purchase.
N250
Donor parts service
Aftermarket and donor parts for legacy Bekum valves, including discontinued G761 bodies.
N260
Repair scope
Bench-level component work on the valve hardware. PLC programming, machine setup, and integration stay with the customer or OEM.
Spool wear, contamination scoring, sticky spool action, and internal leakage past the metering edges.
Pilot stage
Pilot null shift, nozzle plugging, and torque motor coil wear on Moog D661 / G761 servo bodies.
Coil & electronics
Burned proportional coils, failed integrated electronics, and erratic current-to-position behavior on Rexroth proportional bodies.
Seals & leakage
Hardened o-rings and dynamic seals causing internal cross-port leakage.
N500 Workflow
From part number to ship-back
Same four-step path through the shop whether the unit came off a Bekum BM line or a legacy H-series machine.
N510
Get in touch
Call or email with the part number, machine make, and a photo of the nameplate if it helps.
N520
Bench review
Tech opens the unit, inspects pilot and spool, and runs it on the hydraulic stand to confirm what failed.
N530
Cost & approval
We call back with the cost and a rough turnaround. Nothing is started without your sign-off.
N540
Repair, test, ship
Failed components replaced from inventory or off donors, the valve verified under pressure, and shipped back.
N600 Common questions
Common questions about Bekum valve repair
Application-specific questions. For brand-specific FAQs, see the dedicated brand page above.
What servo valve brands are used on Bekum machines?
Moog D661 and G761 servo valves come off Bekum machines routinely. Proportional valves from Bosch Rexroth and Parker also come through the bench.
Can you repair valves from legacy Bekum equipment?
Yes. Servo and proportional valves from all Bekum generations come through the bench, including discontinued Moog G761 and older Rexroth proportional families.
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 Bekum machine programming or software configuration?
No. NC Servo handles bench-level component repair on the valve hardware only. PLC programming, machine 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.
N700 More from NC Servo
Related repair coverage
Other injection-molding pages and the brand pages most-tied to Bekum hydraulics.
Give us a call or send a part number with the machine make 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.
