Airtac SCJ100 Standard Cylinder SCJ100X75-50S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-50S 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. Ø100mm bore, 75mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke75 mm
- Stroke adjust-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-50S
The SCJ100X75-50S is a double-acting, single-rod pneumatic cylinder that delivers 3927 N of push force at 0.5 MPa, making it a capable actuator for medium-to-heavy industrial tasks. Its rear-cap adjusting screw provides a 50 mm field-adjustable stroke range, allowing you to fine-tune the end position without removing the cylinder—ideal for commissioning trials or format changeovers.
This model includes a built-in magnet, enabling direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors for reliable end-of-stroke detection. With a 25 mm rod, PT1/2 ports, and a 29 mm air cushion, it handles speeds up to 800 mm/s while decelerating loads smoothly at stroke end.
Airtac SCJ100 Standard Cylinder SCJ100X75-50S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X75-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SCJ100 Standard Cylinder SCJ100X75-50S Is Used
Commissioning & Setup
The 50 mm adjust range lets technicians fine-tune the actuator end-stop during machine commissioning without swapping cylinders or machining external hard stops.
Product Format Changeover
Quickly adapt stroke length for different product sizes on packaging or sorting lines. The built-in magnet supports sensor repositioning for each format.
Wear Compensation
Adjust the stroke end to take up mechanical wear in tooling or linkages over time, maintaining precise positioning without replacing the cylinder.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-50S the Right Cylinder?
Choose the SCJ100 bore when your application needs the 3927 N push force at standard plant pressure; if you can work with 2513 N, stepping down to the 80 mm bore saves space and air consumption. This adjustable-stroke version is the right pick when you need to dial in the stroke end on the machine—if your stroke is fixed, the standard SC100 series offers a simpler, lower-cost alternative. For replacement, match the 100 mm bore, 75 mm nominal stroke, 50 mm adjust range, PT port thread, and the -S magnet option.
At this 75 mm stroke, rod bending is not a primary concern, but if your load applies significant side force, consider adding an external guide rail or switching to a guided cylinder to protect the rod bearing and seal.
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 SCJ100 Standard Cylinder SCJ100X75-50S FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N (the difference is due to the single 25 mm rod). At the maximum operating pressure of 1.0 MPa, the push force reaches 7068 N.
Yes, if you need the 50 mm adjustable stroke feature. The SCJ100X75-50S matches the SC100 bore, port size (PT1/2), and mounting accessories. Ensure your machine has clearance for the slightly longer rear adjusting screw body (A=245 mm) and that you match the -S magnet option if you use sensors.
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