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SvenskaSiemens spindle motor repair
Repair of 1PH and 1FE motors and the motor spindles built around them.
Parts by brand
Siemens Spindle Motors and Spare Parts
Siemens is mainly a maker of CNC controls, drives and spindle motors rather than of machine tools: Sinumerik controls, SINAMICS drives and Siemens spindle motors are built into machines from dozens of European and Asian manufacturers. When the spindle of such a machine stops, the part needed is usually a motor, a built-in rotor and stator kit, an encoder or a Siemens sensor module. We source these on the German market and check them in our workshop.
Motors and assemblies
1PH motors, built-in 1FE motors and Sinumerik machines
The 1PH7 and 1PH8 induction spindle motors (and the water-cooled 1PH4 on older machines) drive the spindle via a belt or coupling. Their bearings, forced-ventilation fan and encoder are the typical wear parts, and the winding can be rewound when needed.
The 1FE1 and 1FE2 built-in synchronous motors come as a rotor and stator kit that motor spindle makers, including Weiss, build directly into the spindle. They are used in machining centres and lathes with Sinumerik 840D sl, 828D and earlier controls, with feedback via DRIVE-CLiQ encoders or SMC/SMI sensor modules.
Motors 1PH7, 1PH8, 1PH4
New, reconditioned or exchange motor with the same order code.
- fans and covers
- terminal boxes
- motor bearings
Built-in 1FE1 / 1FE2
Rotor and stator kits and motor spindles based on them for milling and turning machines.
- stators with cooling jacket
- rotors with sleeve
- motor spindles from Weiss and other makers
Encoders and modules
Built-in motor encoders, sensor modules and cables.
- sin/cos and DRIVE-CLiQ encoders
- SMC and SMI modules
- winding temperature sensors
Motor spindle mechanics
Bearings, clamping units and rotary unions for motor spindles with 1FE motors.
How to order
How to identify a Siemens motor or encoder
The Siemens nameplate carries the order code (MLFB), the most reliable identifier, and we work from it.
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1
Nameplate photo with MLFB
Photograph the motor nameplate: code such as 1PH7… or 1FE1… and the serial number. For an encoder, its label.
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2
Machine data
Tell us the machine make, model and Sinumerik version. This helps confirm encoder and parameter compatibility.
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3
Identification and quote
We look for a new, reconditioned or exchange option; availability and delivery time are confirmed after your enquiry.
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4
Testing and fitting
We check insulation, bearings and encoder signals. On request we build the 1FE kit into your motor spindle.
Why us
Why order Siemens motors through us
Workshop in Germany
Siemens is a German brand, and its parts are most readily found on the German market.
Electrical testing
Insulation resistance, windings, temperature sensor and encoder are checked before dispatch.
Fitting into the motor spindle
Rotor pressing, stator installation, balancing and run-in in our workshop.
Simple shipping
Within the EU without customs paperwork; outside the EU we help with export documents.
Related pages
Siemens repair and parts
A 1PH motor with a noisy bearing or damaged winding is often more economical to repair. See the repair page.
Spindle motors
Induction and synchronous spindle motors.
Encoders and sensors
Motor encoders and feedback modules.
Spindle motor rewinding
Restoring the stator winding.
FAQ
Siemens parts: frequently asked questions
It is the Siemens order code. It is printed on the motor nameplate next to the serial number and fully describes the version: power, speed, encoder type and flange.
Often yes, after checking dimensions, encoder and drive parameters. We prepare a comparison for your machine.
In most cases a new encoder or cable solves it. After replacement the encoder has to be commissioned correctly on the drive, and we explain the procedure.
The 1FE stator and rotor are matched as a pair by code; we propose options after checking the nameplate and the condition of the existing parts.
Request
Send us the MLFB code of your Siemens motor
A nameplate photo and the machine data are all we need. We reply with options and ship across Europe and worldwide.
Scope
Our spindle services
Every operation below is done in our own workshop in Germany. Follow a link for what it involves and what we need from you.
Machine brand
Machine brands
We are independent and work with spindles of every builder. These are the makes whose spindles come across the bench most often.