PxG® Integrated Precision Planetary Gearmotors from SEW-EURODRIVE
June 19, 2025
The new PxG® integrated series combines PxG® planetary gear units and CM3G.. servomotors to create a single highly compact, precise, and dynamic unit.
Specifically developed for highly dynamic applications involving precise positioning
SEW-EURODRIVE’s PxG®M..CM3G.. precision planetary gearmotors have been specifically developed for highly dynamic applications involving precise positioning. One key feature is their extremely compact design, with aninstallation length up to 40% shorterthan conventional servo planetary gearmotors with adapter mounting for the motor. In the future, this means PxG® integrated precision planetary gearmotors will even be suitable for many applications that previously required right-angle gear units. Furthermore, the compact design ensures extremely high torsional rigidity and a low mass moment of inertia. Together with the high overload capacity, these features maximize the solution’s dynamic credentials.
In conjunction with the high-performance materials being used, the latest winding and magnet technology results in high efficiency and reduced heat generation, despite the compact design.
The acoustic optimization of components and the high-precision helical planetary gear units of the PxG® series also ensure low-noise operation.
Features
- Three gear unit sizes (PxG® 3, 4, and 5), each in three performance classes, can at present be combined with two motor sizes (CM3G71 and CM3G80), each in two lengths (S and M)
- Single-stage, two-stage, and three-stage precision gear units with gear ratios of 4 to 220
- Output variants: flange block with/without index bore, solid shaft – smooth or with key/splining
- Output shaft designs optionally also available in stainless steel
- Rotational clearance between 1 and 8 angular minutes, depending on the size and number of stages
- Can be used instead of right-angle gearmotors thanks to the extremely compact design
- IP65 degree of protection (option of IP66)
- Ambient temperature of -15 °C to +40 °C
- Exceptionally smooth running and excellent controllability thanks to an optimized electromagnetic design
- Flexible encoder options – Resolver, Hiperface, EnDat2.2 (MOVILINK® DDI in preparation)
- Less cabling thanks to single-cable technology with EnDat2.2 digital encoders
- Compact version with single-cable technology and no encoder
Technical data
The technical data is based on the combination of SEW-EURODRIVE’s PxG® precision planetary gear units in sizes 3, 4, and 5 and the new CM3G71 and CM3G80 motors.
PxG®M technical data
| PxG® | P5G the scalable all-rounder Optimized for S3 short-time duty (cdf* < 60%) | P6G the fast endurance runner Optimized for high mean speeds or S1 continuous duty (cdf* = 100%) | P7G the precision powerhouse Optimized for high overload capacity and precision |
| Gear ratio | 4 – 100 | 4 – 100 | 16 – 220 |
| Peak torque Nm | 105 – 840 | 70 – 480 | 169 – 990 |
| Rotational clearance | 3 – 4 arcmin | 3 – 4 arcmin | 1 arcmin |
cdf = cyclic duration factor
CM3G.. technical data
| CM3G | 71S | 71M | 80S | 80M | ||||
| Speed rpm | 3000 | 6000 | 3000 | 6000 | 3000 | 6000 | 3000 | 6000 |
| Standstill torque Nm | 2.45 | 5.8 | 4.65 | 15.6 | ||||
| Standstill current A | 1.46 | 2.75 | 3.95 | 7.3 | 3.15 | 6.2 | 10.1 | 18.9 |
| Maximum torque Nm | 4.5 | 12.6 | 8 | 30 | ||||
| Maximum current A | 3.2 | 6 | 9.2 | 17 | 6.1 | 12 | 21.5 | 40 |
Areas of application
- Machine tool gantries
- Delta robots
- Mounting presses
- Drilling and pegging machines
- Filling and transfer starwheels
- Printing machines
- Diaper machines
- Laser cutting machines
- Wire and pipe bending machines
- Chain magazines and tool changers
Sample applications
Delta robot
The benefits for you
- Easy to integrate into the robot thanks to the exceptionally compact design
- A high level of precision as standard, ensuring high repeat accuracy and precise positioning – even at a rate of over 200 positioning tasks per minute
- High control quality based on the extremely high torsional rigidity of the short design
- Drive with small mass moments of inertia that enable high acceleration values and make it possible to boost productivity
- Parameterizable MOVIKIT® software solutions for robotics
Chain magazine and tool changer
The benefits for you
- Drive with small mass moments of inertia that enable high acceleration values and make it possible to boost productivity
- Space-saving installation in the tool changer thanks to an exceptionally compact design
- “Chip-to-chip time” minimized as a result of the very quick tool change made possible by the PxG®M..CM3G.. servo actuator’s high overload capacity
- Wide variety of encoders for optimum integration into the machine tool
Wire and pipe bending machine
The benefits for you
- Highly dynamic servo gearmotors that support thousands of processing steps per minute and increase the machine’s throughput
- Significantly faster inline functions such as straightening, cutting, chamfering, and bending facilitated by the new PxG®M..CM3G.. solutions
- Maintenance-free servo actuators that are ideal for non-stop production
- Huge energy-saving potential realized by replacing conventional hydraulic drive technology
Available options
- Reduced rotational clearance
- Food-grade lubrication
- Stainless steel output shafts
- Permanent-magnet holding brake
- Approvals: UL and CSA (in preparation)
- Encoder systems:
- Resolver
- Hiperface® encoder with electronic nameplate, single-turn and multi-turn
- EnDat2.2 from HEIDENHAIN with single-cable technology, single-turn and multi-turn
- Design with single-cable technology and no encoder
Related Product
MOVI-C® Modular Automation System from SEW-Eurodrive
MOVI-C® is the all-in-one solution for automation tasks. Whether you want to implement standards-based single-axis or multi-axis applications, particularly complex motion control applications or customized automation solutions, MOVI-C® can help you do all that and give you the scope to achieve optimum automation for new projects.
