Airtac SCJ100 Standard Cylinder SCJ100X400-75S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X400-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X400-75S
The AirTAC SCJ100X400-75S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a 75 mm adjustment range via a rear-cap screw. With a 100 mm bore and 25 mm rod, it delivers a substantial 3927 N push force at 0.5 MPa, making it a powerful choice for heavy-duty material handling and clamping applications where the stroke length needs fine-tuning after installation.
This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke detection without external brackets. The tie-rod construction and 29 mm air cushion ensure reliable deceleration, while its PT1/2 port and standard TPU seals suit general industrial environments.
Airtac SCJ100 Standard Cylinder SCJ100X400-75S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X400-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 400 mm |
| Stroke adjustment | Up to 75 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 SCJ100X400-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ100X400-75S Is Used
Commissioning & Setup
Fine-tune the retract stroke end by up to 75 mm during machine commissioning to perfectly align with mating parts, eliminating the need to shim or modify mounting brackets.
Product Changeover
Quickly adjust the stroke for different product sizes on a packaging or sorting line. The 100 mm bore provides the high force needed to push heavy items onto diverging lanes.
Wear Compensation
In high-cycle clamping fixtures, use the adjusting screw to take up mechanical wear on contact surfaces over time, maintaining consistent clamping force without replacing the cylinder.
Is the Airtac SCJ100 Standard Cylinder SCJ100X400-75S the Right Cylinder?
Choose the SCJ100X400-75S when you need high force and the ability to dial in the stroke end on the machine. If 3927 N of push force at 0.5 MPa is more than required, stepping down to the 80 mm bore (2513 N push) can reduce air consumption and physical size. For applications needing a fixed, non-adjustable stroke, the standard SC100 series is the direct alternative. This cylinder is a drop-in replacement for another AirTAC SCJ100 with a 400 mm nominal stroke, 75 mm adjustment range, PT ports, and a magnetic piston. For strokes of 300 mm or more, evaluate the rod for side loading; if the load is not perfectly guided, pair the cylinder with an external guide or switch 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 (-75)
- ✓ 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 SCJ100X400-75S FAQ
At 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 reaches 7068 N. The pull force is lower due to the area of the 25 mm piston rod.
Yes, if your old cylinder is an AirTAC SCJ100 with a 400 mm nominal stroke, a 75 mm adjustment range, PT ports, and a magnetic piston. The tie-rod design ensures a direct dimensional match. Verify that your mounting (basic, FA, LB, or TC) and seal material also match.
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