Airtac SCJ100 Standard Cylinder SCJ100X400-100S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X400-100S 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, 400mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke400 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X400-100S
The SCJ100X400-100S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, giving you up to 100 mm of end-position fine-tuning without swapping the unit. In this 100 mm bore class, it delivers a substantial 3927 N of push force at 0.5 MPa, making it a workhorse for heavy clamping, pressing, and positioning tasks where commissioning tweaks or format changes are frequent.
The built-in magnet (-S suffix) allows direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. With a 25 mm diameter piston rod, PT1/2 ports, and a 29 mm air cushion, this cylinder is built for demanding industrial cycles. The rear adjusting screw shortens the stroke end, while the 400 mm nominal stroke provides a long working reach within the 1500 mm maximum standard limit for this bore.
Airtac SCJ100 Standard Cylinder SCJ100X400-100S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X400-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 400 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 SCJ100X400-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SCJ100X400-100S Is Used
Format Changeovers on Packaging Lines
Quickly adjust the push stroke for different box or carton sizes without mechanical stops. The 100 mm adjustment range handles a wide variety of packaging formats, reducing downtime between product runs.
Heavy-Part Reject Stations
Fine-tune the pusher stroke end to reliably divert parts of varying thicknesses. The 3927 N push force at 0.5 MPa is ample for ejecting heavy or jammed items from a conveyor without damaging the product.
Clamping & Assembly Fixtures
Set the precise clamp stroke for different workpiece families in an assembly cell. The built-in magnet provides sensor feedback to the PLC, confirming the clamp has reached its adjusted end position before the next operation begins.
Is the Airtac SCJ100 Standard Cylinder SCJ100X400-100S the Right Cylinder?
Choose the SCJ100X400-100S when you need high force and the ability to dial in the stroke end on the machine. If your application requires even more push, stepping up to the 125 mm bore provides 6136 N at 0.5 MPa. For a simpler, fixed-stroke solution without the rear adjuster, the standard SC100X400 is the direct alternative. This model is a drop-in replacement for another AirTAC SCJ100 cylinder with a 400 mm nominal stroke, 100 mm adjust range, PT ports, and a magnet.
At a 400 mm stroke, side-loading and rod buckling are real risks. Always guide the load externally with a linear rail or rod guide, or consider a guided cylinder if the load is not perfectly axial. The cylinder uses a basic mount; if pivoting is needed, the TC centre trunnion kit (F-SC100TC) can be added.
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 SCJ100X400-100S FAQ
At the standard operating pressure of 0.5 MPa, it delivers 3927 N of push force and 3681 N of pull force. The push force is higher because the single piston rod reduces the effective area on the return side. The maximum push force at 0.9 MPa is 7068 N.
No. Like all standard pneumatic cylinders, the SCJ100X400-100S will drift or drop if air pressure is lost or the valve is centered. The rear adjusting screw only sets the stroke end position and does not act as a mechanical lock. If you need to hold a load without air, you must add an external rod brake or a pilot-operated check valve.
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