Airtac SCJ100 Standard Cylinder SCJ100X75-20STC
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-20STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 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-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-20STC
The SCJ100X75-20STC is a 100 mm bore, double-acting single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw lets you fine-tune the stroke end position within a 20 mm range without removing the cylinder, making it ideal for commissioning trials or format changeovers. This model delivers a substantial 3927 N push force at 0.5 MPa (7068 N at 0.9 MPa) and uses a 25 mm diameter piston rod with PT1/2 ports.
This specific configuration includes a built-in magnet (S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion pivot (TC suffix) supplied with the TCM1 bracket for swinging load applications. The body length A is 245 mm, and the standard TPU seals provide reliable operation from -20 to +70 °C. It is a genuine AirTAC tie-rod cylinder, not an ISO 15552 profile type.
Airtac SCJ100 Standard Cylinder SCJ100X75-20STC Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-20STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 20 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 SCJ100X75-20STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ100X75-20STC Is Used
End-Stop Fine-Tuning
The 20 mm adjusting screw allows operators to precisely dial in the final stop position of a clamp or press tool without needing to reprogram a servo axis or add mechanical shims.
Format Changeovers
On packaging or filling lines, the stroke can be quickly adjusted to accommodate different product sizes. The magnet and trunnion mount simplify sensor repositioning and cylinder pivoting during the changeover.
Wear Compensation
In high-cycle assembly fixtures, the adjustable stroke can be used to take up mechanical wear on tooling tips or contact surfaces over time, maintaining consistent part contact without replacing the cylinder.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-20STC the Right Cylinder?
Choose the SCJ100X75-20STC when you need high force in a compact 100 mm bore and the ability to adjust the stroke end on the machine. If your application requires slightly less force, the 80 mm bore SCJ series offers 2513 N push at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC100 series is a direct alternative. This cylinder is a direct replacement for any AirTAC SCJ100X75-20 with a centre trunnion mount, magnet, and PT ports.
For this 75 mm stroke, side-loading is generally not a primary concern, but if the rod experiences any lateral force, an external guide rail should be used. The TC centre trunnion mount (F-SC100TC) allows the cylinder to pivot, which is essential for preventing rod bending in articulated linkages.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ100X75-20STC FAQ
As a single-rod cylinder, push force is greater than pull force. At the standard 0.5 MPa operating pressure, the theoretical push force is 3927 N, and the pull force is 3681 N. At the maximum 0.9 MPa operating pressure, push force reaches 7068 N.
Yes, provided the bore, port thread, and mounting style match. The SCJ100X75-20STC is a direct dimensional replacement for an AirTAC SC100X75 fixed-stroke cylinder with a TC mount and magnet, but it adds the ability to shorten the stroke end by up to 20 mm via the rear screw.
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