Airtac SCJ100 Standard Cylinder SCJ100X375-100
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X375-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø100mm bore, 375mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke375 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X375-100
The SCJ100X375-100 is a double-acting, single-rod tie-rod cylinder with a rear-cap adjusting screw that lets you shorten the stroke end by up to 100 mm without changing the barrel. At 0.5 MPa it delivers 3927 N push and 3681 N pull, scaling to 7068 N push at 0.9 MPa, making it a capable mid-range actuator for positioning tasks that need on-machine fine-tuning.
This 100 mm bore model uses a 25 mm piston rod, PT1/2 ports, and a 29 mm air cushion to decelerate the piston near stroke end. The body length A(SCJ) is 245 mm, slightly longer than the fixed-stroke SC of the same bore to accommodate the adjusting mechanism. The nominal 375 mm stroke is well within the 1500 mm maximum standard stroke for this bore.
Airtac SCJ100 Standard Cylinder SCJ100X375-100 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X375-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 375 mm |
| Stroke adjustment | Up to 100 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 SCJ100X375-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×375 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ100X375-100 Is Used
Commissioning & Setup
The 100 mm adjustment range lets technicians dial in the exact stroke end position on a new machine without swapping cylinders or fabricating hard stops, speeding up factory acceptance testing.
Format Changeover
On packaging or filling lines that run multiple product sizes, the rear screw allows operators to quickly reset the cylinder stroke for a new format, reducing downtime between batches.
Wear Compensation
In clamping or pressing fixtures where tooling wears over time, the adjustable stroke end can be periodically advanced to maintain consistent contact force and part quality without re-machining stops.
Is the Airtac SCJ100 Standard Cylinder SCJ100X375-100 the Right Cylinder?
Choose the SCJ100 when you need the 3927 N push force class and the ability to dial in the stroke end position during commissioning or product changeover. If your application requires more force, step up to the 125 mm bore (6136 N push at 0.5 MPa); if you can accept a fixed stroke and want a shorter overall length, the standard SC100 is a direct alternative. For a drop-in replacement, match the 100 mm bore, 375 mm nominal stroke, 100 mm adjustable range, PT1/2 port thread, and any SCJ mounting accessory such as the FA front flange or TC centre trunnion.
At a 375 mm stroke, be mindful of side-loading on the 25 mm rod. If the load is not guided externally, consider adding an external linear guide or switching to 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 (-100)
- ✓ 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 SCJ100X375-100 FAQ
At 0.5 MPa air pressure, the cylinder produces 3927 N of push force (full bore area) and 3681 N of pull force (bore area minus the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 7068 N.
Yes, provided the fixed-stroke cylinder had a stroke of 375 mm or less. The SCJ100X375-100 has the same bore, rod diameter, port size, and mounting footprint as the SC100, but the body is slightly longer to house the adjusting screw. You can set the screw to replicate the original fixed stroke exactly, then fine-tune from there.
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