Airtac SCJ100 Standard Cylinder SCJ100X225-50S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X225-50S 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, 225mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke225 mm
- Stroke adjust-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X225-50S
The SCJ100X225-50S is a double-acting, single-rod pneumatic cylinder with a 100 mm bore and a 225 mm nominal stroke, featuring a 50 mm rear-cap adjusting screw for fine-tuning the stroke end position in the field. This model delivers a push force of 3927 N at 0.5 MPa and is built with a 25 mm diameter piston rod and PT1/2 ports. The built-in magnet (suffix -S) allows direct mounting of CMSG/DMSG/EMSG sensors along the tie-rod barrel for reliable end-of-stroke detection.
With a body length A(SCJ) of 245 mm, this cylinder is designed for applications where the stroke must be dialed in precisely during commissioning or adjusted for different product formats without swapping the actuator. The 50 mm adjustment range gives maintenance and setup teams the flexibility to compensate for tooling wear or minor machine frame variations, while the variable air cushion at both ends decelerates the piston smoothly, protecting the end caps from impact damage.
Airtac SCJ100 Standard Cylinder SCJ100X225-50S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X225-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 225 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 SCJ100X225-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×225 | 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 SCJ100X225-50S Is Used
Commissioning & Setup
The 50 mm adjustment screw allows engineers to precisely dial in the actuator's end stop during machine commissioning, eliminating the need for custom shims or external hard stops on the assembly line.
Product Format Changeover
On packaging or sorting lines, operators can quickly adjust the stroke end to accommodate different box sizes or product heights, reducing changeover time between production runs without mechanical modifications.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke can be extended incrementally to compensate for wear on tooling or contact surfaces, maintaining consistent clamping force and extending the service life of the fixture.
Is the Airtac SCJ100 Standard Cylinder SCJ100X225-50S the Right Cylinder?
Choose the SCJ100X225-50S when you need a 100 mm bore cylinder with a stroke that can be reduced by up to 50 mm from its 225 mm nominal maximum. If your application requires more force, step up to the 125 mm bore SCJ which provides 6136 N of push at 0.5 MPa; for a more compact solution with lower force, the 80 mm bore SCJ offers 2513 N. The adjustable-stroke SCJ is the right pick over a fixed-stroke SC when you anticipate needing to change the stroke end position after installation, such as during machine setup or format changeovers. For a direct replacement, match this model to another SCJ100 with a 225 mm stroke, a 50 mm adjustment range, PT ports, a basic mount, and a magnet. For a 225 mm stroke, ensure the rod is not subjected to high side loads; if lateral forces are present, guide the load externally or consider a guided cylinder to prevent rod bending and premature seal wear.
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 SCJ100X225-50S FAQ
At the standard operating pressure of 0.5 MPa, this 100 mm bore cylinder generates a push force of 3927 N and a pull force of 3681 N. The maximum push force at the 0.9 MPa operating limit is 7068 N. The pull force is lower because the 25 mm piston rod reduces the effective area on the return stroke.
It is a direct dimensional and functional match for another AirTAC SCJ100X225-50S with a basic mount, PT ports, and a magnet. To replace a cylinder from a different series, you must verify the 100 mm bore, 225 mm nominal stroke, 50 mm adjustment range, tie-rod body length of 245 mm, 25 mm rod diameter with M20x1.5 threads, and PT1/2 port size are all identical to your current unit.
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