Airtac SCJ50 Standard Cylinder SCJ50X150-50
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø50mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke150 mm
- Stroke adjust-50 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X150-50
The SCJ50X150-50 is a double-acting, single-rod pneumatic cylinder that integrates a rear-cap adjusting screw, giving you up to 50 mm of on-machine stroke-end adjustment without removing the cylinder. With a 50 mm bore and a 20 mm piston rod, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it a strong mid-range actuator for tasks that need fine positional tuning.
This model uses a PT1/4 port, an M16x1.5 rod thread, and a 21 mm air cushion to decelerate the piston quietly at each end of the 150 mm nominal stroke. The tie-rod construction keeps the design field-serviceable, and the adjustable screw lets you dial in the exact stroke end for commissioning trials, format changeovers, or mechanical wear take-up.
Airtac SCJ50 Standard Cylinder SCJ50X150-50 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 50 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 SCJ50X150-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ50X150-50 Is Used
Commissioning & Setup
Fine-tune the end-of-stroke position during machine commissioning without swapping cylinders or machining custom stops. The 50 mm adjustment range lets technicians dial in the exact stopping point for new tooling.
Format Changeovers
Quickly adapt to different product sizes on packaging or assembly lines. Operators can adjust the stroke end by up to 50 mm to accommodate a new box height or part profile, minimizing downtime between batches.
Wear Compensation
Take up mechanical play in linkages or gripper fingers over time. As components wear, the rear adjusting screw provides 50 mm of correction to restore precise positioning without replacing the actuator.
Is the Airtac SCJ50 Standard Cylinder SCJ50X150-50 the Right Cylinder?
Choose the SCJ50X150-50 when your application requires a 150 mm maximum stroke but you need to trim the end position by up to 50 mm during setup or production. If you need more force, stepping up to the 63 mm bore provides 1559 N of push force at 0.5 MPa; for a lighter, more compact solution, the 40 mm bore delivers 628 N. This adjustable-stroke model is ideal where a fixed-stroke SC would require shimming or external stops. For a direct replacement, match the 50 mm bore, 150 mm nominal stroke, 50 mm adjust range, PT thread, and basic mounting. If your 150 mm stroke creates a side-load risk, consider an external guide rail or a guided cylinder to protect the rod bearing.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ50X150-50 FAQ
At 0.5 MPa, the cylinder produces 982 N of push force and 825 N of pull force. The rear adjusting screw only sets the stroke end position within the 50 mm range; it does not alter the bore diameter, piston area, or output force in any way.
Yes, provided the bore (50 mm), nominal stroke (150 mm), port thread (PT1/4), and mounting style match. The SCJ body is slightly longer to house the adjusting mechanism, so verify the extended envelope fits your machine. The adjustable stroke adds field-tuning capability that the fixed SC does not offer.
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