Airtac SCJ50 Standard Cylinder SCJ50X130-20
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X130-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø50mm bore, 130mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke130 mm
- Stroke adjust-20 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X130-20
The SCJ50X130-20 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing 982 N of push force at 0.5 MPa. Its rear-cap adjusting screw allows the effective stroke to be shortened by up to 20 mm, making it ideal for commissioning fine-tuning or accommodating minor format changes without swapping the cylinder.
This 50 mm bore model uses a 20 mm diameter piston rod and PT1/4 ports. The body length (A dimension) is 194 mm, and it features an adjustable air cushion of 21 mm for smooth deceleration. With a maximum operating pressure of 1.0 MPa, it can deliver up to 1767 N of push force for demanding end-stop positioning tasks.
Airtac SCJ50 Standard Cylinder SCJ50X130-20 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X130-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 130 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac SCJ50 Standard Cylinder SCJ50X130-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×130 | Nominal (maximum) stroke length in mm. |
| -20 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCJ50 Standard Cylinder SCJ50X130-20 Is Used
Commissioning & Setup
Field engineers can precisely dial in the final stop position of a pusher or stop gate during machine commissioning, eliminating the need for shims or custom hard stops.
Product Format Changeover
Quickly adjust the stroke end to accommodate different box or pallet sizes on a packaging line, reducing changeover time between production runs.
Wear Compensation
In clamping or pressing fixtures, the adjusting screw can be advanced over time to compensate for wear on tooling or seals, maintaining consistent clamp force and position.
Is the Airtac SCJ50 Standard Cylinder SCJ50X130-20 the Right Cylinder?
Select the SCJ50X130-20 when you need a robust mid-range actuator with the flexibility to fine-tune the stroke end position on the machine. If your application requires more force, stepping up to the 63 mm bore provides 1559 N of push force at 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC series is a more economical choice. A direct replacement must match the 50 mm bore, 130 mm nominal stroke, 20 mm adjustment range, PT port thread, and basic mounting style.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ50 Standard Cylinder SCJ50X130-20 FAQ
At the standard 0.5 MPa operating pressure, this cylinder provides 982 N of push force and 825 N of pull force. The maximum push force at 1.0 MPa is 1767 N. The rear adjusting screw only changes the stroke end position, not the cylinder's output force.
A screw mechanism in the rear cap allows you to limit the piston's retraction stroke by up to 20 mm. This sets a new mechanical end position within the 130 mm nominal stroke range. It is a stroke-end adjuster, not a speed or force controller, and it does not lock the piston rod in place when air pressure is removed.
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