Airtac SCJ100 Standard Cylinder SCJ100X25-10S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X25-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø100mm bore, 25mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke25 mm
- Stroke adjust-10 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X25-10S
The SCJ100X25-10S is a double-acting, single-rod tie-rod cylinder that puts a 10 mm stroke-end adjustment screw right at the rear cap, letting you fine-tune the 25 mm nominal stroke on the fly. With a 25 mm rod and PT1/2 ports, this 100 mm bore actuator delivers 3927 N of push force at 0.5 MPa—enough for heavy clamping, pressing, or ejector duties where the final stop position needs dialling in during commissioning or after tooling wear.
This model includes a built-in magnet (-S suffix), so you can clamp CMSG, DMSG, or EMSG reed or solid-state sensors directly onto the barrel for reliable end-of-stroke detection without extra brackets. The body length A(SCJ) is 245 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. Operating on 0.15–1.0 MPa filtered air, it handles temperatures from -20 to +70 °C with its default TPU seals.
Airtac SCJ100 Standard Cylinder SCJ100X25-10S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X25-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 25 mm |
| Stroke adjustment | Up to 10 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 SCJ100X25-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×25 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ100X25-10S Is Used
Commissioning Fine-Tuning
Dial in the exact 25 mm end position during machine setup without swapping cylinders or machining hard stops, saving hours of mechanical adjustment on a busy production line.
Clamp Stroke Take-Up
Compensate for jaw or pad wear in a heavy-duty clamping fixture by advancing the stroke end 10 mm, maintaining consistent 3927 N clamping force without replacing the actuator.
Product Stop Adjustment
Use the rear screw to quickly reposition a product gate or diverter stop by up to 10 mm when switching between different package sizes on a conveyor system.
Is the Airtac SCJ100 Standard Cylinder SCJ100X25-10S the Right Cylinder?
Step up to the SCJ125 if you need more force—the 125 mm bore pushes 6136 N at 0.5 MPa. If your application doesn't require field-adjustable stroke, the fixed-stroke SC100 is a simpler, slightly shorter alternative. For a direct replacement, match the 100 mm bore, 25 mm nominal stroke, 10 mm adjust range, PT port thread, basic mounting, and the -S magnet option exactly; the SCJ's rear screw design means only another SCJ100X25-10S will drop in without re-engineering the end-stop setup. At this short 25 mm stroke, rod bending from side loads is rarely a concern, but always align the load axially or add an external guide if any radial force is present.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ100X25-10S FAQ
At 0.5 MPa, it delivers 3927 N push and 3681 N pull because the single rod reduces the piston area on the return side. At the maximum operating pressure of 1.0 MPa, push force reaches 7068 N. The 10 mm adjust screw changes only the stroke end position, not the output force.
Only if you need the adjustable stroke feature. The SCJ body is slightly longer than the fixed SC to house the rear adjusting screw. For a drop-in replacement of another SCJ, match the 100 mm bore, 25 mm nominal stroke, 10 mm adjust range, PT port thread, and the -S magnet option. The mounting footprint for basic, FA, LB, and TC accessories is identical to the SC series.
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