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.
- Compact miniature size
- High repeatability
- High speed and smooth motion
- High rigidity
Models and Specifications
| Item | RM-NPLA-10-30-1 | RM-NPLA-10-30-2 | RM-NPLA-10-30-4 | RM-NPLA-10-30-6 |
|---|---|---|---|---|
| Size code | 10 | |||
| Stroke (mm) | 30 | |||
| Lead (mm) | 1 | 2 | 4 | 6 |
| Max. speed (mm/s) | 50 | 100 | 200 | 300 |
| Max. thrust (N) | 210 | 110 | 50 | 30 |
| Max. payload (horizontal) (kg) | 6 | 3 | 2 | 1.5 |
| Max. payload (vertical) (kg) | 3 | 2 | 1 | 0.5 |
| Repeatability (mm) | ±0.005 | |||
| Static allowable load moment (N·m) | MP 9.75, MR 11.31, MY 3.75 | |||
| Weight (kg) | 0.5 | |||
| Dimensions (mm) | 111.5 × 34 × 48 | |||
| Compatible controller | RM-CEU, RM-CEM | |||
| Supported fieldbus protocols | Modbus RTU, EtherCAT, Modbus TCP, PROFINET, EtherNet/IP, CC-LINK, CANopen | |||
| Supported control methods | I/O, pulse control (except RM-CEM) | |||
| Rated voltage (V) | DC24 ±10% | |||
| Rated current (A) | 1.25 | |||
| Cable length (m) | 3 / 5 (optional) | |||
| 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 separate controller type models (external controller).
For full specifications and dimensional drawings, see RM Electric Actuator General Catalogue (PDF).
Differences in 50mm stroke models
50mm stroke models differ from the 30mm stroke models only in the parameters below; speed, thrust and payload for each lead are the same as in the table above.
| Item | RM-NPLA-10-50-1 | RM-NPLA-10-50-2 | RM-NPLA-10-50-4 | RM-NPLA-10-50-6 |
|---|---|---|---|---|
| Stroke (mm) | 50 | |||
| Lead (mm) | 1 | 2 | 4 | 6 |
| Weight (kg) | 0.6 | |||
| Dimensions (mm) | 131.5 × 34 × 48 | |||
The series also includes size code 16 models (75mm and 150mm stroke). For their specifications, see the general catalog or contact our sales team.
Typical Applications
Positioning feed in precision assembly
Repeatability of ±0.005mm, with four leads that trade off speed against thrust — a 1mm lead delivers 210N thrust while a 6mm lead reaches 300mm/s — so you can choose according to station requirements.
Light-load press-fitting and pressing
Thrust of 30–210N suits press-fitting, bonding and positioning/clamping of small parts, with position feedback available through the controller.
Short-stroke axes inside equipment
Its compact size (111.5 × 34 × 48mm and 0.5kg for the 30mm stroke model) allows it to be installed as an auxiliary axis where space inside equipment is limited, with support for I/O and pulse control.
Frequently Asked Questions
How do I choose between the four lead options of the RM-NPLA?
Lead determines the trade-off between speed and thrust, which are inversely proportional. Lead 1mm: maximum speed 50mm/s, maximum thrust 210N; lead 2mm: 100mm/s, 110N; lead 4mm: 200mm/s, 50N; lead 6mm: 300mm/s, 30N. Maximum horizontal payload is 6, 3, 2 and 1.5kg respectively, and vertical payload is 3, 2, 1 and 0.5kg. Choose a smaller lead for thrust and a larger lead for speed.
What is the difference between the 30mm and 50mm stroke RM-NPLA models?
The only differences are stroke, overall length and weight: the 30mm stroke model measures 111.5 × 34 × 48mm and weighs 0.5kg; the 50mm stroke model measures 131.5 × 34 × 48mm and weighs 0.6kg. Speed, thrust, load capacity and accuracy depend on the lead and are the same for both strokes. The same series also includes size code 16 models with 75mm and 150mm strokes.
What is the repeatability of the RM-NPLA? Can it be used for precision positioning?
Repeatability is ±0.005mm, and the static allowable load moment is MP 9.75, MR 11.31, MY 3.75 N·m, making it suitable for positioning in precision assembly and inspection stations. Actual accuracy is still affected by mounting rigidity and load configuration, so when designing the mechanism make sure the lateral load does not exceed the allowable moment.
Which controllers and communication protocols can be used with the RM-NPLA?
Compatible controllers are the RM-CEU and RM-CEM. Supported fieldbus protocols include Modbus RTU, EtherCAT, Modbus TCP, PROFINET, EtherNet/IP, CC-LINK and CANopen, and control methods include I/O and pulse control (except RM-CEM). Rated voltage is DC24V ±10%, rated current is 1.25A, cable length of 3m or 5m is optional, and protection rating is IP40.
What should I use if I need precise thrust control or want to record the force curve of every press?
The RM-NPLA is primarily position-controlled, and its thrust is determined by the lead. If your process needs to control "how much force is applied", for example precision pressing, snap-fit assembly, Hot Bar bonding or pressure testing, you can use the RM-NPLA-HF precision force-control type from the same series instead: it has a built-in force sensor for closed-loop force control, force control accuracy of up to ±0.01N, captures force-position-time data to generate process curves, and offers strokes of 30~150mm.