Airtac SCJ100 Standard Cylinder SCJ100X225-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X225-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 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-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X225-40
The SCJ100X225-40 is a double-acting, single-rod pneumatic cylinder with a 100 mm bore and a nominal 225 mm stroke, featuring a rear-cap adjusting screw that provides a 40 mm field-adjustable stroke range. This allows the effective stroke end position to be fine-tuned without removing the cylinder, delivering a push force of 3927 N at 0.5 MPa and up to 7068 N at 0.9 MPa.
Built as a robust tie-rod cylinder, it uses a 25 mm diameter piston rod, PT1/2 ports, and an M20x1.5 rod thread. The adjustable air cushion is 29 mm long, and the SCJ body length is 245 mm. Its maximum standard stroke for this bore is 1500 mm, making this 225 mm unit a standard configuration suitable for applications needing on-machine stroke calibration.
Airtac SCJ100 Standard Cylinder SCJ100X225-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X225-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 40 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 SCJ100X225-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×225 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ100X225-40 Is Used
Commissioning & Setup
The 40 mm adjustment screw lets technicians quickly fine-tune the end position of a 225 mm stroke actuator during machine commissioning, eliminating the need to shim or reposition hard stops.
Product Format Changeover
On a packaging line, the SCJ100X225-40 can be re-adjusted to accommodate different box sizes or pallet patterns without swapping the cylinder, reducing downtime between production runs.
Wear Compensation
In high-cycle clamping or pressing fixtures, the adjustable stroke can be periodically shortened to take up mechanical wear in tooling or linkages, maintaining consistent clamp force without replacing parts.
Is the Airtac SCJ100 Standard Cylinder SCJ100X225-40 the Right Cylinder?
Choose the SCJ100 bore when your application needs around 3927 N of push force at standard plant pressure. If your force requirement is lower, stepping down to an 80 mm bore provides 2513 N of push force at 0.5 MPa. This adjustable-stroke version is the right pick when you need to dial in the end position during commissioning or changeover, whereas a fixed-stroke SC100 cylinder is a simpler, more cost-effective choice if the stroke never needs field adjustment. For a direct replacement, match the 100 mm bore, 225 mm nominal stroke, 40 mm adjust range, PT port thread, and basic mounting. At this 225 mm stroke, ensure the rod is adequately supported if significant side loads are present, or consider adding an external guide rail to prevent rod bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ100X225-40 FAQ
At 0.5 MPa, it delivers 3927 N pushing and 3681 N pulling. The maximum push force at the 0.9 MPa operating limit is 7068 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the return side.
It is a direct replacement for another AirTAC SCJ100 cylinder with a 225 mm nominal stroke and a 40 mm adjustment range. Verify that your port thread is PT1/2, the mounting style matches, and the rod thread is M20x1.5. The adjustable stroke screw sets only the stroke end position, not the force or speed.
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