Airtac SCJ100 Standard Cylinder SCJ100X400-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X400-40 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, 400mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke400 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X400-40
The SCJ100X400-40 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the piston's stop position by up to 40 mm without removing the unit from the machine. Its 100 mm bore generates a substantial 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, making it a powerful actuator for heavy industrial tasks.
The rear-cap adjusting screw shortens the stroke end only, so the nominal 400 mm stroke defines the maximum extension, while the 25 mm diameter piston rod and PT1/2 port ensure robust air flow. The cylinder body length A(SCJ) is 245 mm, and it features an adjustable air cushion of 29 mm at each end for smooth deceleration of high-inertia loads.
Airtac SCJ100 Standard Cylinder SCJ100X400-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X400-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 400 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 SCJ100X400-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SCJ100X400-40 Is Used
Multi-Product Conveyor Gates
Adjust the gate opening stroke by up to 40 mm on the fly to handle different package sizes on a single sorting line, eliminating mechanical changeover parts.
Clamping & Fixturing Stations
Fine-tune the clamp's final position for varying workpiece thicknesses in welding or assembly fixtures, ensuring consistent pressure without damaging parts.
Press & Forming Die Ejection
Set the exact ejector stroke end to clear parts reliably from a die without over-travel, simplifying setup after die changes or maintenance.
Is the Airtac SCJ100 Standard Cylinder SCJ100X400-40 the Right Cylinder?
Choose the SCJ100X400-40 when you need to dial in a precise end position during commissioning or for multi-format tooling, avoiding the cost and complexity of external hard stops. If your force requirement is lower, the 80 mm bore SCJ delivers 2513 N of push at 0.5 MPa, offering a more compact and energy-efficient alternative. For applications needing even greater force, stepping up to the 125 mm bore provides 6136 N at the same pressure.
This cylinder is a direct replacement for another AirTAC SCJ100 with a 400 mm nominal stroke and a 40 mm adjustment range, matching PT port threads and basic mounting. For strokes of 300 mm or more, always assess side-loading on the rod; if the load is not guided, pair this cylinder with an external guide rail 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 (-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 SCJ100X400-40 FAQ
At the standard operating pressure of 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
You can replace a fixed-stroke SC100 cylinder with this SCJ100X400-40 if you need the 40 mm stroke-end adjustment feature. The mounting footprint, port size (PT1/2), and rod diameter (25 mm) are identical, but the SCJ body is slightly longer to accommodate the adjusting screw mechanism. Ensure the 400 mm nominal stroke and adjustment range match your application's requirements.
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