Airtac SCJ50 Standard Cylinder SCJ50X110-75
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X110-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 110mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke110 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X110-75
The SCJ50X110-75 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, allowing the effective stroke to be shortened by up to 75 mm without replacing the unit. With a 50 mm bore and 20 mm rod, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it a capable mid-range actuator for tasks that need on-machine fine-tuning.
This tie-rod cylinder uses a rear-cap adjusting screw to set the stroke end position precisely. The body length A(SCJ) is 194 mm, and the integrated air cushion is 21 mm long to decelerate the piston smoothly. Standard PT1/4 ports and an M16x1.5 rod thread ensure straightforward pneumatic and mechanical connection.
Airtac SCJ50 Standard Cylinder SCJ50X110-75 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X110-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 110 mm |
| Stroke adjustment | Up to 75 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 SCJ50X110-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×110 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ50X110-75 Is Used
Commissioning & Setup
The 75 mm adjustment range lets technicians fine-tune the stroke end stop on a new machine without fabricating custom hard stops, speeding up initial deployment and troubleshooting.
Product Format Changeover
Quickly adapt the cylinder's end position for different product sizes on a packaging or sorting line. The rear screw adjustment eliminates the need to re-program servo drives for simple push/eject tasks.
Wear Compensation
In clamping or pressing applications, the adjustable stroke can be gradually extended to compensate for tooling or pad wear over time, maintaining consistent contact force without immediate part replacement.
Is the Airtac SCJ50 Standard Cylinder SCJ50X110-75 the Right Cylinder?
Choose the SCJ50X110-75 when you need to dial in a stroke end position during commissioning or format changes without swapping cylinders. For higher force, step up to the 63 mm bore (1559 N push at 0.5 MPa); for a lighter, more compact solution, the 40 mm bore provides 628 N. If the stroke length is fixed and never needs adjustment, a standard SC series cylinder is a simpler, cost-effective alternative.
This model is a direct replacement for an existing AirTAC SCJ50X110-75 with basic mounting, TPU seals, and PT ports. For strokes of 300 mm or more, consider an external guide rail to protect the 20 mm rod from side-load deflection and ensure long seal life.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ50X110-75 FAQ
At the standard operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. The maximum push force at 0.9 MPa is 1767 N. The adjusting screw only changes the stroke end position and does not alter the cylinder's force output.
A screw in the rear cap sets the physical end-of-stroke position for the piston, allowing you to shorten the stroke by up to 75 mm from the 110 mm nominal length. It is designed for position setting, not as a high-impact hard stop. The piston should still be decelerated by the internal air cushion to avoid damage.
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