Repair servo motors
Siemens 1FK7 / 1FT7
1FK7 · 1FT7 · 1FW6 · SIMOTICS S · SIMOTICS T
A damaged Siemens servo motor means a stopped CNC axis or robot. We repair SIMOTICS mechanics and electronics: bearings, windings, Hiperface/EnDat encoders, brakes. Quote 24h, 12-month warranty.
Diagnostics included in repair
No-obligation quote
12-month warranty
Courier pickup from all of Europe
Dynamic testing after repair
Siemens SIMOTICS servo motor service — repair scope
Precision bearing replacement
Replacement of precision motor and encoder axis bearings. We use class P5/P4 bearings dedicated to servo motors. Radial and axial run-out check after assembly.
Winding repair and regeneration
Stator winding insulation resistance measurement. Regeneration or rewinding of damaged stator coils. Vacuum-pressure impregnation after repair.
Hiperface / EnDat encoder repair
Diagnostics and repair of Hiperface and EnDat 2.1/2.2 encoder electronics. Replacement of optical head and DSL modules. Encoder calibration after component replacement.
Brake service (MHF/brake)
Repair and adjustment of servo motor parking brake: braking torque measurement, replacement of friction discs and electromagnet. KUKA/Siemens safety brake.
Seal repair (IP65/IP67)
Renewal of shaft pusher seals (shaft seal) in accordance with IP65/IP67 rating. Replacement of o-rings and shaft seals after moisture or dust-related failures.
Load and dynamic testing
Motor testing on a test bench: measurement of torque, speed and winding temperature under load. Verification of compliance with catalogue parameters.
What does Siemens servo motor repair look like?
Request
+ fault description
Shipping
by courier
Mechanical
diagnostics
Quote
no obligation
Repair
+ testing
Return
with warranty
Report Siemens servo motor fault — no-obligation quote
Provide the Siemens motor model (1FK7…/1FT7…) and fault description. An EFIXLAB specialist will contact you with a diagnosis and quote.
Dziękujemy! Our specialist will contact you shortly.Frequently asked questions — servo motors Siemens
F01702/F07801 is an encoder communication error (Hiperface or EnDat). It may indicate a damaged encoder cable, damaged encoder electronics or excessive EMC interference. Diagnostics identifies the exact cause.
Yes — during bearing replacement we preserve absolute encoder calibration. For incremental encoders, calibration is required after replacement — we perform this on a test bench.
Bearing replacement: 300–500 PLN. Encoder repair: 250–600 PLN. Winding regeneration: 400–900 PLN. Exact quote after diagnostics — diagnostics cost included in repair.
Siemens 1FK7 Servo Motor Repair — Encoder, Winding, and Bearing Service
Siemens 1FK7 servo motors are among the most widely deployed servo motors in European industry, paired with SINAMICS S120 and S210 servo drives across machine tools, packaging machines, printing equipment, and general automation. The 1FK7 range covers torques from 0.16 to 200 Nm with various encoder options (incremental, absolute, multi-turn) and motor variants (standard, compact, high-dynamic). These motors combine German engineering reliability with the broad Siemens automation ecosystem.
Common 1FK7 servo motor failures include encoder malfunctions (DRIVE-CLiQ encoder failures, resolver faults, incremental encoder contamination), bearing wear causing vibration and reduced position accuracy, winding insulation degradation from thermal overload or contamination (coolant, oil ingress), brake unit wear or failure in holding brake variants, and connector/cable damage from mechanical flexing. The DRIVE-CLiQ electronic nameplate encoder can develop communication errors that trigger drive faults even when the motor itself is mechanically sound.
At EFIXLAB, we provide comprehensive 1FK7 servo motor repair. Our service covers encoder diagnostics and replacement (including DRIVE-CLiQ encoder programming), winding insulation testing and repair, bearing replacement with precision-matched equivalents, brake unit overhaul, shaft seal replacement, and complete electrical and mechanical testing. We verify encoder feedback accuracy, winding resistance and insulation, vibration levels, and brake performance on our motor test bench.
Siemens 1FK7 motor repair typically saves 40–60% versus new motor cost. Encoder-only repairs where the motor is mechanically sound offer even greater savings. Given the large installed base of 1FK7 motors, professional repair capability is essential for maintaining Siemens-automated production equipment. All 1FK7 motor repairs include detailed test documentation and our 12-month warranty.