VFD vs Servo Drive: Key Differences
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
- Part number
- 1FK7063-2AC71-1QA0
SIMOTICS SSiemens 1FK7063-2AC71-1QA0 SIMOTICS S 1FK7-CT Synchronous Servo Motor 11Nm 2000rpm
SIMOTICS S 1FK7-CT synchronous servo motor, 11 Nm, 2000 rpm, 4.4 A, IP64, no brake.
Description
About the 1FK7063-2AC71-1QA0
About the 1FK7063-2AC71-1QA0
The Siemens 1FK7063-2AC71-1QA0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 11 Nm continuous torque (M0 at 100K) at 2,000 rpm, with 4.4 A rated current and a shaft height of 63 mm. It uses natural cooling, carries IP64 protection, and includes a Drive-CLiQ single-turn absolute encoder (20-bit), no holding brake.
Selection Notes
The 2.08 Nm/A torque constant and 136.5 V/1000min-1 voltage constant put this winding at the low-speed, high-torque-per-amp end of the shaft-height-63 1FK7-CT range: it produces 11 Nm from only 4.4 A rated current, at the cost of a lower 2,000 rpm optimum speed than the faster windings built on the same frame. No holding brake is fitted, so a vertical or overhauling axis needs an external brake or a self-locking mechanical stage to hold position once drive power is removed.
Applications
Fits synchronous servo axes in machine tools, packaging, and material handling that need 11 Nm at a moderate 2,000 rpm base speed and where an external or gearbox-integrated brake already holds the load. The Drive-CLiQ encoder interface connects directly to Drive-CLiQ-enabled Siemens drive systems without separate encoder cabling.
Specification
Full specification
Engineering data 10
| Rated speed (100 K) | 2,000 rpm |
|---|---|
| Number of poles | 8 |
| Rated torque (100 K) | 8.9 Nm |
| Rated current | 4.4 A |
| Static torque (60 K) | 9.10 Nm |
| Static torque (100 K) | 11.00 Nm |
| Stall current (60 K) | 4.30 A |
| Stall current (100 K) | 5.30 A |
| Moment of inertia | 14.700 kgcm² |
| Efficiency | 91.0 % |
Physical constants 9
| Torque constant | 2.08 Nm/A |
|---|---|
| Voltage constant at 20º C | 136.5 V/1000*min¯¹ |
| Winding resistance at 20º C | 1.45 Ω |
| Rotating field inductance | 19.4 mH |
| Electrical time constant | 13.40 ms |
| Mechanical time constant | 1.47 ms |
| Thermal time constant | 40 min |
| Shaft torsional stiffness | 34,000 Nm/rad |
| Net weight of the motor | 11.1 kg Permanent-magnet synchronous |
Mechanical data 16
| Motor type | motor Compact |
|---|---|
| Shaft height | 63 |
| Cooling | Natural cooling |
| Radial runout tolerance | 0.040 mm |
| Concentricity tolerance | 0.10 mm |
| Axial runout tolerance | 0.10 mm |
| Vibration severity grade | Grade A |
| Connector size | M23 |
| Degree of protection | IP64 |
| Design acc. to Code I | IM B5 (IM V1, IM V3) |
| Temperature monitoring | Pt1000 temperature sensor |
| Electrical connectors | Connectors for signals and power rotatable |
| Color of the housing | Standard (Anthracite RAL 7016) |
| Holding brake | without holding brake |
| Shaft end | Feather key |
| Encoder system | Encoder AS20DQI: absolute encoder single-turn 20 bits |
Show all 54 specifications ↓ Show less ↑19 more values in Identification, Optimum operating point, Limiting data, Recommended Motor Module, Logistics.
Identification 5
| Part number | 1FK7063-2AC71-1QA0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
Optimum operating point 2
| Optimum speed | 2,000 rpm |
|---|---|
| Optimum power | 1.9 kW |
Limiting data 4
| Max. permissible speed (mech.) | 7,200 rpm |
|---|---|
| Max. permissible speed (inverter) | 4,200 rpm |
| Maximum torque | 35.0 Nm |
| Maximum current | 18.5 A |
Recommended Motor Module 4
| Rated inverter current | 5A |
|---|---|
| Maximum inverter current | 15 A |
| Maximum torque | 29.50 Nm |
| Page 1 of 1 | Generated Sun Nov 1 02:18:58 CET 2026 |
Logistics 4
| Shipping weight | 12.101 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 1FK7063-2AC71-1QA0
No documents are on file for this part yet.
Ask us for the datasheet
Quick answers
Questions about the 1FK7063-2AC71-1QA0
What is the rated current of 1FK7063-2AC71-1QA0?
The rated current of 1FK7063-2AC71-1QA0 is 4.4 A.
What motor power is 1FK7063-2AC71-1QA0 rated for?
The rated motor power of 1FK7063-2AC71-1QA0 is 1.9 kW.
What is the HS code of 1FK7063-2AC71-1QA0 for customs?
The tariff (HS) code on file for 1FK7063-2AC71-1QA0 is 85015220.
Where does 1FK7063-2AC71-1QA0 ship from, and how fast?
1FK7063-2AC71-1QA0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for servo drives
What Benefits Do Schneider Soft Starters Offer?
Discover how Schneider soft starters reduce mechanical stress, cut energy peaks, and extend motor life across demanding industrial uses. Shop at Stoklink.
How Do Schneider Soft Starters Reduce Energy Costs?
Schneider soft starters reduce energy costs by limiting inrush current, lowering demand charges, and minimizing mechanical wear on motors. Shop at Stoklink.
Reviews
Customer reviews
Series
Siemens SIMOTICS S
- Brand
- Siemens
- Series
- SIMOTICS S
