Airtac SCJ50 Standard Cylinder SCJ50X200-20
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X200-20 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, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke200 mm
- Stroke adjust-20 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X200-20
The SCJ50X200-20 is a double-acting, single-rod pneumatic cylinder that lets you fine-tune the stroke end position by up to 20 mm using a rear-cap adjusting screw, without swapping the unit. In the 50 mm bore class, it delivers 982 N of push force at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa, making it a versatile actuator for mid-force applications where commissioning or format changes demand a variable stroke.
This model has a 200 mm nominal stroke and a 20 mm rod, with PT1/4 ports and an M16x1.5 rod thread. The body length A(SCJ) is 194 mm, and the adjustable air cushion decelerates the piston smoothly at each end. It is a genuine AirTAC tie-rod cylinder, built for reliable field adjustment in industrial automation.
Airtac SCJ50 Standard Cylinder SCJ50X200-20 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X200-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 200 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 SCJ50X200-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SCJ50X200-20 Is Used
Commissioning & Setup
The 20 mm adjustable stroke allows technicians to dial in the exact end-stop position during machine commissioning, eliminating the need to machine custom spacers or swap cylinders for fine positional changes.
Product Format Changeover
On packaging or sorting lines, operators can quickly adjust the cylinder's stroke end to accommodate different product sizes or box dimensions, reducing changeover downtime with a simple screw adjustment.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force without replacing the actuator.
Is the Airtac SCJ50 Standard Cylinder SCJ50X200-20 the Right Cylinder?
Choose the SCJ50X200-20 when you need a mid-range force actuator with on-machine stroke adjustability. If 982 N of push force at 0.5 MPa is insufficient, stepping up to the 63 mm bore provides 1559 N; if it exceeds your requirement, the 40 mm bore offers 628 N. For applications where the stroke never needs field adjustment, a fixed-stroke SC50X200 cylinder is a simpler, cost-effective alternative. This SCJ model is a direct replacement for any AirTAC SCJ50 cylinder with a 200 mm nominal stroke and a 20 mm adjustment range, provided the port thread (PT), mounting style, and magnet option match. For strokes of 200 mm and above, ensure the rod is not subjected to excessive side loads; an external guide or a guided cylinder is recommended to prevent rod bending and premature seal wear.
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 SCJ50X200-20 FAQ
At the standard operating pressure of 0.5 MPa, it generates 982 N of push force and 825 N of pull force. The push force increases to 1767 N at the maximum operating pressure of 0.9 MPa. The pull force is always lower because the rod reduces the effective piston area on the return stroke.
Yes, it is a direct dimensional and functional match for any AirTAC SCJ50 cylinder with a 200 mm nominal stroke and a 20 mm adjustment range. Ensure your replacement has the same port thread (PT), mounting accessories (if any), and magnet option (-S) to guarantee a drop-in fit.
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