Airtac SCJ50 Standard Cylinder SCJ50X150-50S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-50S 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 SCJ50X150-50S
The SCJ50X150-50S delivers 982 N of push force at 0.5 MPa, adjustable across a 50 mm range via its rear screw. This single-rod, double-acting tie-rod cylinder features a 20 mm rod and PT1/4 ports.
With a body length of 194 mm and 21 mm air cushion, it includes a built-in magnet for sensor mounting. The stroke end is field-adjustable without cylinder changes.
Airtac SCJ50 Standard Cylinder SCJ50X150-50S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-50S |
|---|---|
| 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 SCJ50X150-50S
| 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 SCJ50X150-50S Is Used
Format Changeovers
Quickly adapt stroke end position for different product sizes on packaging lines without swapping cylinders.
Wear Compensation
Fine-tune the stroke end to maintain precise clamping force as tooling or grippers wear over time.
Stop Positioning
Set a precise mechanical stop on a conveyor diverter or gate, adjustable during commissioning.
Is the Airtac SCJ50 Standard Cylinder SCJ50X150-50S the Right Cylinder?
For higher force, step up to the 63 mm bore offering 1559 N push at 0.5 MPa. If a fixed stroke is acceptable, the standard SC series eliminates the adjusting screw. This SCJ matches any SCJ50 with a 150 mm nominal stroke, 50 mm adjust range, PT ports, and basic mount. For strokes over 300 mm, consider external guides to manage rod deflection.
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 SCJ50X150-50S FAQ
A rear-cap screw limits the piston's travel, shortening the effective stroke by up to 50 mm from the 150 mm nominal maximum. It sets the end position, not the force or speed.
At 0.5 MPa, it provides 982 N pushing and 825 N pulling. The push force is higher because the rod reduces the piston area on the return side.
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