AC servo motor
Allen-Bradley Kinetix VPC Continuous-duty Servo Motors
Interior permanent magnet motors for continuous-duty applications with IE4/IE5 efficiency, optional fan cooling, runnable on Kinetix 5700 servo drives or PowerFlex 755 AC drives.
Key specifications
| Rated torque | 15.3–191.1 Nm |
|---|---|
| Peak torque (max) | 327.8 Nm |
| Speed (max) | 5,000 rpm |
| Rated speed | 1000-4200 |
| Power | 3,400–30,000 W |
| Frame sizes | 165, 215, 300 mm |
| Feedback | high-resolution digital encoder (single cable) |
| Efficiency | IE4/IE5, approx. 91.1-96.7% |
| Cooling | with or without attached fan (fan: 17.6-191.1 N.m / 4.0-30.0 kW; no fan: 15.3-167.7 N.m / 3.4-24.4 kW) |
Summarised in our own words from Rockwell Automation's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2
Notes on this data
Figures are for Kinetix 5700 operation (VPC-PP001C-EN-P, April 2020); on PowerFlex 755 all VPC motors limited to 2000 rpm. Voltage class and IP not stated in sources checked (catalog numbers are B = 400 V class).
Specify Motion is not affiliated with Rockwell Automation. Allen-Bradley and Kinetix VPC Continuous-duty Servo Motors are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Alternatives that meet or exceed these figures
Engineers often come to us with an Allen-Bradley part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Kinco's current-generation AC servo motor line, matched to the JD2 and FD5P PRO drives. Small-inertia 40-80 mm frames run at 3000 rpm on 220 V; large-inertia 130 and 180 mm frames are 1500 rpm machines reaching 47.8 Nm rated and 7.5 kW, with 23-bit multi-turn absolute encoders as standard.
| Published maximum | Kinetix VPC Continuous-duty Servo Motors | SMK Series AC Servo Motors (SMK40S/60S… |
|---|---|---|
| Rated torque | 191.1 Nm | 47.8 Nm |
| Peak torque | 327.8 Nm | 119.5 Nm |
| Speed | 5,000 rpm | 6,000 rpm meets or exceeds |
| Power | 30,000 W | 7,500 W |
Leadshine low-voltage PMSM servo motors from a 25 mm 33 W unit up to a 130 mm 2 kW unit, wound for 24-60 V DC buses. Fully published data covers torque to 6.4 Nm rated / 16 Nm peak, 17-bit absolute or 2500 ppr incremental encoders and IP65. Designed for ELD2, 2ELD2 and ELD3 drives.
| Published maximum | Kinetix VPC Continuous-duty Servo Motors | ELVM Series Low-Voltage DC Servo Motors |
|---|---|---|
| Rated torque | 191.1 Nm | 6.4 Nm |
| Peak torque | 327.8 Nm | 16 Nm |
| Speed | 5,000 rpm | 6,000 rpm meets or exceeds |
| Power | 30,000 W | 2,000 W |
Brushed permanent-magnet DC servomotors in 82 mm and 102 mm frames with a 9.5 V/krpm tachogenerator on every model. Continuous stall torque runs 0.5-4.5 Nm with peaks to 22 Nm, and the motors work with most brushed servo drives on the market.
| Published maximum | Kinetix VPC Continuous-duty Servo Motors | BDS Series DC Brushed Servomotors (82B… |
|---|---|---|
| Rated torque | 191.1 Nm | 4.3 Nm |
| Peak torque | 327.8 Nm | 22 Nm |
| Speed | 5,000 rpm | 5,000 rpm meets or exceeds |
| Power | 30,000 W | 964 W |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Other ac servo motor series
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