Airtac SCJ50 Standard Cylinder SCJ50X110-75S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X110-75S 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 SCJ50X110-75S
The SCJ50X110-75S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you a 75 mm fine-tuning range on the 110 mm nominal stroke. Its 50 mm bore generates 1374 N of push force at 0.7 MPa, while the 20 mm piston rod ensures robust cycling. A built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for end-of-stroke detection without external brackets.
This genuine AirTAC tie-rod cylinder uses a rear-cap adjusting screw to set the retract end position, making it ideal for commissioning trials or format changeovers. The PT1/4 port, M16x1.5 rod thread, and 21 mm air cushion deliver smooth deceleration. Body length A(SCJ) is 194 mm, and the TPU seal operates from -20 to +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X110-75S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X110-75S |
|---|---|
| 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 SCJ50X110-75S
| 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 SCJ50X110-75S Is Used
Commissioning & Setup
Technicians can dial in the exact stroke end position during initial machine setup using the 75 mm adjusting screw, eliminating the need to stock multiple fixed-stroke cylinders for trial runs.
Product Format Changeover
On a packaging line, the adjustable stroke lets operators quickly reset the pusher end-stop for different box sizes without mechanical modifications, reducing downtime between batches.
Wear Compensation
In clamping or pressing fixtures, the stroke can be incrementally extended over time to compensate for tooling or pad wear, maintaining consistent contact force without replacing the actuator.
Is the Airtac SCJ50 Standard Cylinder SCJ50X110-75S the Right Cylinder?
Step up to a 63 mm bore (2182 N push at 0.7 MPa) if your load exceeds the SCJ50's 1374 N capability, or down to a 40 mm bore (879 N) for lighter, faster applications. Choose this adjustable-stroke SCJ over a fixed-stroke SC when you need to fine-tune the end position on the machine without swapping cylinders. For a direct replacement, match the 50 mm bore, 110 mm nominal stroke, 75 mm adjust range, PT port thread, basic mount, and the built-in magnet (-S). At this 110 mm stroke, side-loading is minimal, but always align the rod with the load axis to prevent premature seal wear.
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 SCJ50X110-75S FAQ
At 0.5 MPa, the cylinder provides 982 N pushing force and 825 N pulling force (the difference is due to the single rod). At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N. Always size your application using the lower pulling force if the cylinder pulls the load.
A rear-cap screw mechanically limits the piston's retract stroke end by up to 75 mm on this model. You choose an SCJ when you need to fine-tune the stroke on-site for commissioning, format changes, or wear take-up. If your application requires a single, unchanging stroke length, the standard SC fixed-stroke cylinder is a more economical choice.
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