RM-RGM Servo Rotary Electric Gripper
The RM-RGM servo rotary electric gripper combines gripping and unlimited 360° rotation in a single actuator. It offers an adjustable stroke of 0~32 mm, gripping force of 4~100 N, a max. rotation speed of up to 2160°/s, position repeatability of ±0.02 mm and rotation repeatability of ±0.05°. With a built-in controller and Modbus RTU support, it suits assembly and inspection stations that need to pick, place and rotate parts at the same time.
Manufacturer: RobustMotion | Category: Electric Grippers | Models: RM-RGM-0606-360-16-02-ITG, RM-RGM-0606-360-32-04-ITG, RM-RGM-0609-360-32-08-ITG
RM-RGM Servo Rotary Gripper
Featuring ultra-fast opening/closing and adaptive gripping, with built-in empty-grip and workpiece-drop detection, it is ready to run within 1 minute of connecting power. Lower in cost and easier to use, it also delivers greater precision, controllability and intelligence, making it an ideal way to boost your automation efficiency.

Highly Integrated

High Torque

High Gripping Force

360° Infinite Rotation
Models and Specifications
| Item | RM-RGM-0606-360-16-02-ITG | RM-RGM-0606-360-32-04-ITG | RM-RGM-0609-360-32-08-ITG |
|---|---|---|---|
| Adjustable stroke (mm) | 0-16 | 0-32 | 0-32 |
| Gripping force (N) | 4-24 | 30-100 | 30-100 |
| Fastest open / close time (s) | 0.15 / 0.15 | 0.3 / 0.3 | 0.3 / 0.3 |
| Allowable static moment (slider) (N·m) | MR 1.5, MP 1.5, MY 1.5 | MR 2.1, MP 2.1, MY 2.1 | MR 2.1, MP 2.1, MY 2.1 |
| Rated torque (N·m) | 0.2 | 0.4 | 0.8 |
| Peak torque (N·m) | 0.35 | 1.2 | 1.5 |
| Max. allowable inertia (kg/mm²) | 100 | 200 | 200 |
| Position repeatability (mm) | ±0.02 | ||
| Rotation repeatability (°) | ±0.05 | ||
| Min. / max. rotation angle | Unlimited | ||
| Max. rotation speed (°/s) | 1000 | 1100 | 2160 |
| Controller | Built-in | ||
| Supported fieldbus protocols | Modbus RTU | ||
| Rated voltage (V) | DC24 ±10% | ||
| Rated current (A) | 1.8 | 1.8 | 2 |
| Peak current (A) | 4 | ||
| Weight (kg) | 0.42 | 0.7 | 1.1 |
| Dimensions (mm) | 45 × 30 × 155 | 55.9 × 43.9 × 165.5 | 74 × 45 × 161.5 |
| Operating environment | 0–40°C, 85%RH or less (non-condensing) | ||
| Protection rating | IP40 | ||
Highlighted rows differ between models; values shared by all models are merged into one cell.
The table above lists the ITG integrated models (built-in controller).
For full specifications and dimensional drawings, see RM Electric Actuator General Catalogue (PDF).
Typical Applications
Rotate parts during pick-and-place
Gripping and unlimited 360° rotation are combined in a single actuator, so the workpiece can be turned to the required assembly angle while it is being transferred. This eliminates a separate rotary mechanism along with its wiring and control axis.
Assembly stations requiring angular positioning
With rotation repeatability of ±0.05° and position repeatability of ±0.02 mm, it handles tasks that require consistent angles, such as inserting orientation-sensitive parts or aligning parts before fastening.
Flipping and multi-side imaging at inspection stations
A max. rotation speed of up to 2160°/s and an unlimited rotation angle let the workpiece rotate continuously at an inspection station to capture images from multiple angles, without returning to the origin.
Frequently Asked Questions
Is the rotation angle of the RM-RGM limited? Can it rotate continuously in one direction?
There is no angle limit: both minimum and maximum rotation angles are unlimited, and it can rotate continuously in the same direction. Rotational repeatability is ±0.05°, and maximum rotation speed is 1000, 1100 or 2160°/s depending on the model. This lets stations that need to rotate parts during pick-and-place eliminate a separate rotary mechanism and its wiring.
How do I choose between the three RM-RGM models?
RM-RGM-0606-360-16-02-ITG has an adjustable stroke of 0~16mm, gripping force of 4~24N, fastest open/close of 0.15 s, rated torque of 0.2 N·m and weight of 0.42kg, suitable for small, lightweight workpieces. RM-RGM-0606-360-32-04-ITG increases the stroke to 0~32mm, with gripping force of 30~100N, rated torque of 0.4 N·m and weight of 0.7kg. RM-RGM-0609-360-32-08-ITG has the same stroke and gripping force as the previous model, but rated torque rises to 0.8 N·m, peak torque to 1.5 N·m and maximum rotation speed to 2160°/s, with a weight of 1.1kg; it suits rotation tasks with heavier loads or shorter cycle time requirements.
What should I check regarding rotation when selecting an RM-RGM?
In addition to gripping force, confirm the inertia of the rotating load and the required torque. Maximum allowable inertia is 100 kg/mm² (0606-360-16-02) or 200 kg/mm² (the other two models), rated torque is 0.2~0.8 N·m and peak torque is 0.35~1.5 N·m. The workpiece weight at the gripping end and its distance from the rotation center both affect the actual inertia, so we recommend sending us the workpiece configuration so we can help with the calculation.
What are the control method and power requirements of the RM-RGM?
The controller is built in and supports the Modbus RTU fieldbus protocol. Rated voltage is DC24V ±10%, rated current is 1.8A (2A for the 0609-360-32-08), and peak current is 4A. Operating environment is 0~40°C, 85%RH or less (non-condensing), protection rating is IP40, and position repeatability is ±0.02mm.
Other Electric Grippers Models
- RM-EGB Compact Electric Gripper — The RM-EGB is an all-in-one electric gripper with a built-in controller, designed as a drop-in replacement for pneumatic grippers of the same specification. Gripping force from 10 to 80 N and stroke from 6 to 10 mm are both selectable in steps, chosen directly by an I/O signal combination with no parameter setup required. Built-in adaptive gripping plus empty-grip and workpiece-drop detection; supports Modbus RTU and I/O control.
- RM-GB Servo Electric Gripper — The RM-GB servo electric gripper is a drop-in replacement for pneumatic grippers of the same specification, with a stroke of 20~170 mm and a max. gripping force of 65~700 N. It offers very high-speed opening and closing, adaptive gripping, and built-in empty-grip and workpiece-drop detection. The 11 / 17 series are available as ITG integrated versions (built-in controller); separate controller types work with RM-C / RM-CEP / RM-CEM / RM-CEU-55 controllers and support a range of industrial fieldbuses including EtherCAT, PROFINET and EtherNet/IP.
- RM-GB-HF/F Precision Force-Control Servo Electric Gripper — The RM-GB-HF/F is a servo electric gripper in the RobustMotion SoftForce® precision force-control series (also called a force-control electric gripper or force-control servo gripper). It adds a force sensor to the RM-GB platform for closed-loop force control with real-time gripping force feedback, while capturing force–position–time data to generate process curves. Strokes are 20 / 40 / 60mm, the closed-loop gripping force range spans 0.2–98.9N depending on sensor range, and repeatability is ±0.05mm. With position hold on power loss and power-loss detection, it is suited to transfer, assembly, soldering and inspection of workpieces such as chips, dies and flexible flat cables. Used with the RM-CEPF / RM-CEMSF controllers, it supports EtherCAT, PROFINET, CC-LINK and Modbus TCP / RTU.
- RM-MGBD-HF Precision Force-Control Miniature Electric Gripper — The RM-MGBD-HF is a two-jaw miniature electric gripper in the RobustMotion SoftForce® precision force-control series (also called a force-control electric gripper). With force-control accuracy down to ±0.01N, it performs closed-loop force control with real-time gripping force feedback while capturing force–position–time data to generate process curves. Stroke is 13mm, repeatability ±0.02mm and fastest open / close time 0.25 s; the closed-loop gripping force range spans 0.02–15N depending on sensor range. It is suited to pick-and-place of fragile, high-value workpieces such as packaged chips, micro optical lenses and precision components. Used with the RM-CEUF / RM-CEMF controllers, it supports EtherCAT, PROFINET, CC-LINK and Modbus TCP / RTU.
A key-spec comparison of every model, with selection notes and FAQs, is in the Electric Grippers selection guide.
More from RobustMotion
- MagiFloater® Planar Maglev Conveyor — MagiFloater® is a modular planar maglev conveyor system that builds flexible production lines from a combination of stators and movers. Movers levitate above the stator surface and move omnidirectionally in 6D — X, Y, Z plus rotation about three axes — with position accuracy of ±0.02mm and a levitation height of 0.5–5mm. Stators are interconnected via Ethernet and support a range of industrial communication protocols, allowing direct connection to host computers, robots or other motion control mechanisms. Applications include biopharmaceutical, cosmetics and food, 3C and lithium battery, and semiconductor and optics production lines.
- RM-NPLA Miniature Slide-Table Electric Cylinder — The RM-NPLA miniature slide-table electric cylinder (also called an electric linear actuator or compact electric cylinder) is compact with repeatability of ±0.005mm. Strokes of 30mm and 50mm are available, and depending on the lead it offers combinations of max. speed from 50 to 300mm/s and max. thrust from 30 to 210N. It supports industrial fieldbuses including Modbus RTU, EtherCAT, Modbus TCP, PROFINET, EtherNet/IP, CC-LINK and CANopen, and is suited to precision assembly and inspection stations.
- RM-NPLA-HF Precision Force-Control Miniature Slide-Table Electric Cylinder — The RM-NPLA-HF is a miniature slide-table electric cylinder in the RobustMotion SoftForce® precision force-control series (also called a force-control electric cylinder or force-control linear actuator). A built-in force sensor enables closed-loop force control with real-time force feedback and force-control accuracy down to ±0.01N, while force–position–time data is captured to generate process curves. Size code 10 models offer 30 / 50mm stroke and ±0.005mm repeatability; size code 16 models offer 75 / 150mm stroke. Depending on sensor range and lead, the closed-loop force range spans 0.02–294.9N. Used with the RM-CEUF / RM-CEMF controllers, it supports EtherCAT, PROFINET, CC-LINK and Modbus TCP / RTU.
