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.
- Compact miniature size
- Force control accuracy up to ±0.01N
- Micron-level high repeatability
- High speed, smooth motion and high rigidity
Models and Specifications
| Item | RM-NPLA-10-30-1-HF | RM-NPLA-10-30-2-HF | RM-NPLA-10-30-4-HF | RM-NPLA-10-30-6-HF |
|---|---|---|---|---|
| Size code | 10 | |||
| Stroke (mm) | 30 | |||
| Lead (mm) | 1 | 2 | 4 | 6 |
| Max. speed (mm/s) | 50 | 100 | 200 | 300 |
| Available sensor ranges | HF50 / HF100 / HF200 | HF50 / HF100 | HF50 | HF50 |
| Closed-loop force range (N) | 0.2 ~ 198.9 | 0.2 ~ 99.4 | 0.2 ~ 49.8 | 0.2 ~ 29.8 |
| Max. payload (horizontal) (kg) | 2 | 2 | 2 | 1.5 |
| Max. payload (vertical) (kg) | 3 | 2 | 1 | 0.75 |
| Repeatability (mm) | ±0.005 | |||
| Weight (kg) | 0.7 | |||
| Dimensions (mm) | 156.5 × 35 × 48 | |||
| Compatible controller | RM-CEUF, RM-CEMF | |||
| Supported communication | RM-CEUF: EtherCAT, Modbus RTU, I/O; RM-CEMF: Modbus TCP, PROFINET, CC-LINK, Modbus RTU | |||
| Rated voltage (V) | DC24 ±10% | |||
| Rated current (A) | 1.25 | |||
| 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 size code 10, 30mm stroke models with HF50 / HF100 / HF200 sensors; the controller is external. The closed-loop force range shown is the overall range across all sensor ranges available for that lead — the actual range depends on the selected sensor; see "Closed-loop force range by sensor range" below.
Differences in 50mm stroke models
50mm stroke models differ from the 30mm stroke models only in the parameters below; speed, force and payload for each lead are the same as in the table above.
| Item | RM-NPLA-10-50-1-HF | RM-NPLA-10-50-2-HF | RM-NPLA-10-50-4-HF | RM-NPLA-10-50-6-HF |
|---|---|---|---|---|
| Stroke (mm) | 50 | |||
| Lead (mm) | 1 | 2 | 4 | 6 |
| Weight (kg) | 0.8 | |||
| Dimensions (mm) | 176 × 35 × 48 | |||
HF10 micro-force range models (closed-loop force 10N or less)
Models with the HF10 sensor (10N range, absolute force accuracy ±0.01N) for processes that require extremely small thrust; no 1mm lead version is available. Compatible controllers, communication, power supply and operating environment are the same as in the table above.
| Item | RM-NPLA-10-30-2-HF10 | RM-NPLA-10-30-4-HF10 | RM-NPLA-10-30-6-HF10 | RM-NPLA-10-50-2-HF10 | RM-NPLA-10-50-4-HF10 | RM-NPLA-10-50-6-HF10 |
|---|---|---|---|---|---|---|
| Stroke (mm) | 30 | 30 | 30 | 50 | 50 | 50 |
| Lead (mm) | 2 | 4 | 6 | 2 | 4 | 6 |
| Max. speed (mm/s) | 100 | 200 | 300 | 100 | 200 | 300 |
| Closed-loop force range (N) | 0.02 ~ 9.98 | |||||
| Max. payload (horizontal) (kg) | 0.5 | |||||
| Max. payload (vertical) (kg) | 0.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.3 |
| Repeatability (mm) | ±0.005 | |||||
| Weight (kg) | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 |
| Dimensions (mm) | 133.5 × 35 × 48 | 133.5 × 35 × 48 | 133.5 × 35 × 48 | 153.5 × 35 × 48 | 153.5 × 35 × 48 | 153.5 × 35 × 48 |
Size code 16 (75 / 150mm stroke)
Long-stroke, high-force models. The cable outlet uses an aviation connector adapter (A0050), the outlet direction can be left-front or right-front, and a brake is optional. Compatible controllers and communication are the same as in the table above.
| Item | RM-NPLA-16-75-5-HF | RM-NPLA-16-75-10-HF | RM-NPLA-16-150-5-HF | RM-NPLA-16-150-10-HF |
|---|---|---|---|---|
| Size code | 16 | |||
| Stroke (mm) | 75 | 75 | 150 | 150 |
| Lead (mm) | 5 | 10 | 5 | 10 |
| Max. speed (mm/s) | 250 | 380 | 250 | 380 |
| Available sensor ranges | HF50 / HF100 / HF200 / HF300 | HF50 / HF100 / HF200 | HF50 / HF100 / HF200 / HF300 | HF50 / HF100 / HF200 |
| Closed-loop force range (N) | 0.2 ~ 294.9 | 0.2 ~ 178.9 | 0.2 ~ 294.9 | 0.2 ~ 178.9 |
| Max. payload (horizontal) (kg) | 3 | |||
| Max. payload (vertical) (kg) | 5 | 3 | 5 | 3 |
| Repeatability (mm) | ±0.02 | |||
| Brake | Optional (BK) | |||
| Rated current (A) | 5 | |||
| Weight (kg) | 1.6 | 1.6 | 2.2 | 2.2 |
| Dimensions (mm) | 209 × 58 × 63.5 | 209 × 58 × 63.5 | 282 × 58 × 63.5 | 282 × 58 × 63.5 |
Closed-loop force range by sensor range
Unit: N. The first part of the sensor code is the range and the second part is the absolute force accuracy: 0001 = ±0.01N, 001 = ±0.1N, 005 = ±0.5N, 010 = ±1N, 050 = ±5N. "—" means the range is not available for that lead.
| Lead (stroke) | HF10-0001 | HF50-001 | HF100-005 | HF200-010 | HF300-050 |
|---|---|---|---|---|---|
| 1mm (30 / 50mm) | — | 0.2 ~ 49.8 | 0.6 ~ 99.4 | 1.1 ~ 198.9 | — |
| 2mm (30 / 50mm) | 0.02 ~ 9.98 | 0.2 ~ 49.8 | 0.6 ~ 99.4 | — | — |
| 4mm (30 / 50mm) | 0.02 ~ 9.98 | 0.2 ~ 49.8 | — | — | — |
| 6mm (30 / 50mm) | 0.02 ~ 9.98 | 0.2 ~ 29.8 | — | — | — |
| 5mm (75 / 150mm) | — | 0.2 ~ 49.8 | 0.6 ~ 99.4 | 1.1 ~ 198.9 | 5.1 ~ 294.9 |
| 10mm (75 / 150mm) | — | 0.2 ~ 49.8 | 0.6 ~ 99.4 | 1.1 ~ 178.9 | — |
Model Code
RM－NPLA－[size code]－[stroke]－[lead]－[cable outlet direction]－[cable outlet type & length]－[sensor range]－[absolute force accuracy]－[brake]
| Field | Available codes |
|---|---|
| Size code | 10, 16 |
| Stroke | 30, 50 (size code 10); 75, 150 (size code 16) |
| Lead | 1, 2, 4, 6 (size code 10); 5, 10 (size code 16) |
| Cable outlet direction | Size code 10: T (rear), L (left), R (right), LF (left front), RF (right front); size code 16: LF, RF |
| Cable outlet type & length | Size code 10: S0028 (adapter cable, 28cm); size code 16: A0050 (aviation connector adapter, 50cm) |
| Sensor range | HF10, HF50, HF100, HF200 (size code 10, depending on lead); HF50, HF100, HF200, HF300 (size code 16) |
| Absolute force accuracy | 0001 (±0.01N, HF10), 001 (±0.1N, HF50), 005 (±0.5N, HF100), 010 (±1N, HF200), 050 (±5N, HF300) |
| Brake | / (no brake); BK (with brake) optional for size code 16 |
Typical Applications
Precision pressing and snap-fit assembly
With force-control accuracy down to ±0.01N, closed-loop control holds the set thrust and delivers small, precise and constant force even under larger loads. Suited to precision pressing and snap-fit assembly of micro parts while preventing damage from over-pressing.
Hot bar bonding and force testing
Force–position–time data can be captured in real time or offline to generate process curves. Suited to pressure control in hot bar soldering and to force testing of keys, connectors and similar components; the data can serve as the basis for quality judgment and traceability.
Precision stations in 3C, semiconductor and optics
Size code 10 models measure only 156.5 × 35 × 48mm (30mm stroke) with ±0.005mm repeatability and can be installed where space inside equipment is limited. When a longer stroke or more force is needed, size code 16 models offer 75 / 150mm stroke and closed-loop force up to 294.9N. Also suitable for automotive electronics, biomedical, and research and education applications.
Frequently Asked Questions
What is the difference between the RM-NPLA-HF and the standard RM-NPLA?
The RM-NPLA-HF adds a force sensor to the miniature slide-table electric cylinder and pairs it with a precision force-control controller (RM-CEUF/RM-CEMF), enabling closed-loop control of thrust with real-time force feedback, force control accuracy of up to ±0.01N, and capture of force-position-time data to generate process curves. The standard RM-NPLA is primarily position-controlled, with thrust determined by the lead and no force sensing or curve recording. Choose the HF version when your process needs to control "how much force is applied" rather than just "where to press to".
How do I choose the force sensor range for the RM-NPLA-HF?
Choose according to the force range your process requires; the smaller the range, the finer the force resolution. HF10 has an absolute force accuracy of ±0.01N and closed-loop output of 0.02~9.98N, suited to ultra-low-force pressing; HF50 is ±0.1N, 0.2~49.8N (0.2~29.8N with 6mm lead); HF100 is ±0.5N, 0.6~99.4N; HF200 is ±1N, 1.1~198.9N (1.1~178.9N for size code 16 with 10mm lead); HF300 is available only for size code 16 with 5mm lead, ±5N, 5.1~294.9N. The available sensor ranges differ by lead, so please refer to the mapping in the specification table.
How do I choose between RM-NPLA-HF size code 10 and 16?
Size code 10 is the miniature model, with 30/50mm strokes, ±0.005mm repeatability, 0.7~0.8kg weight and 1.25A rated current, suited to precision stations with limited space. Size code 16 offers 75/150mm strokes, maximum speed of 250~380mm/s, closed-loop output of up to 294.9N, ±0.02mm repeatability and 5A rated current, with an optional brake, suited to longer strokes or higher output force.
Which controllers and communication protocols can be used with the RM-NPLA-HF?
Compatible controllers are the RM-CEUF and RM-CEMF precision force-control controllers. The RM-CEUF supports EtherCAT, Modbus RTU and I/O; the RM-CEMF supports Modbus TCP, PROFINET, CC-LINK and Modbus RTU. Rated voltage is DC24V ±10%, operating environment is 0~40°C, 85%RH or less (non-condensing), and protection rating is IP40.
Who distributes the RM-NPLA-HF in Taiwan? Can you help with model selection?
Utrun-Tech Co.,Ltd. distributes RobustMotion products and provides selection evaluation, mechanism integration advice and post-installation technical support for the RM-NPLA-HF precision force-control electric cylinder in Taiwan. When requesting a quote or selection support, please provide the required thrust range, stroke, workpiece and process (for example pressing, snap-fit assembly, Hot Bar bonding or pressure testing) so we can confirm the suitable model and sensor range.