Airtac SCJ50 Standard Cylinder SCJ50X400-100
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X400-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø50mm bore, 400mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke400 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X400-100
The SCJ50X400-100 delivers 982 N of push force at 0.5 MPa from its 50 mm bore, with a field-adjustable stroke end that can be shortened by up to 100 mm. This single-rod, double-acting cylinder uses a 20 mm diameter rod and PT1/4 ports, making it a versatile actuator for applications requiring on-machine fine-tuning.
With a body length A of 194 mm and a 21 mm air cushion at each end, this model provides smooth deceleration. The 400 mm nominal stroke is well within the 1200 mm maximum standard stroke for the 50 mm bore, ensuring ready availability without special order lead times.
Airtac SCJ50 Standard Cylinder SCJ50X400-100 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X400-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 400 mm |
| Stroke adjustment | Up to 100 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 SCJ50X400-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ50X400-100 Is Used
Format Changeovers
Quickly adjust the end stop for different product sizes on a packaging line without swapping the cylinder or adding mechanical stops.
Clamping & Pressing
Fine-tune the final clamp position to accommodate varying workpiece thicknesses in a glue press or assembly fixture.
Diverter Gates
Set the precise open position of a material diverter gate, compensating for mechanical wear or linkage slack over time.
Is the Airtac SCJ50 Standard Cylinder SCJ50X400-100 the Right Cylinder?
Choose the SCJ50X400-100 when your application demands a 400 mm reach with the ability to dial back the stroke end position during commissioning or changeovers. If 982 N of push force is insufficient, stepping up to the 63 mm bore provides 1559 N at the same pressure. For a fixed, non-adjustable stroke, the standard SC50X400 is the direct alternative. This basic model uses PT threads and has no magnet. For side-load management on a 400 mm stroke, consider an external guide rail or a guided cylinder.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ50X400-100 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The maximum operating push force at 0.9 MPa is 1767 N.
Yes, if you need the 100 mm adjustment range. The SCJ50X400-100 matches the SC footprint for 50 mm bore and 400 mm stroke. Ensure your porting (PT1/4) and mounting style are compatible.
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Standard models usually ship in 3-4 days.
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Related AirTAC SCJ Adjustable-Stroke Cylinders
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