Airtac SCJ100 Standard Cylinder SCJ100X400-100
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X400-100 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, 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 SCJ100X400-100
The SCJ100X400-100 delivers a substantial 3927 N of push force at 0.5 MPa, making it a robust solution for heavy-duty automation where the stroke end position must be field-tuned. Its 100 mm adjustment range, set via the rear screw, allows operators to fine-tune the 400 mm nominal stroke for commissioning or format changes without replacing the cylinder.
This double-acting, single-rod cylinder features a 25 mm diameter rod and a PT1/2 port, with a body length of 245 mm. The adjustable cushion decelerates the piston smoothly, and the tie-rod construction ensures reliable service in demanding industrial environments.
Airtac SCJ100 Standard Cylinder SCJ100X400-100 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X400-100 |
|---|---|
| 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 SCJ100X400-100
| 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 SCJ100X400-100 Is Used
Conveyor Stop Adjustment
Fine-tune the stopping position of heavy pallets on a conveyor line. The 100 mm adjustment range allows operators to quickly adapt the stop point for different pallet sizes without mechanical rework.
Press-Fit Depth Control
Dial in the exact press depth for bearing or bushing insertion. The rear adjusting screw provides a repeatable, mechanical hard stop that can be easily modified as tooling wears or part specifications change.
Clamp Stroke Optimization
Optimize the closing stroke of a large welding or assembly fixture clamp. The adjustable stroke end prevents over-travel, protecting the workpiece while accommodating variations in part thickness during production changeovers.
Is the Airtac SCJ100 Standard Cylinder SCJ100X400-100 the Right Cylinder?
Select the SCJ100X400-100 when your application requires a powerful push force of nearly 4000 N at standard line pressure and the flexibility to adjust the stroke end by up to 100 mm on the machine. If you need more force, stepping up to the 125 mm bore provides 6136 N of push force at the same 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC100X400 cylinder is a direct alternative, though it lacks the rear adjusting screw. This model is a precise replacement for another AirTAC SCJ100 cylinder with a 400 mm nominal stroke, 100 mm adjust range, PT ports, and basic mounting. For this 400 mm stroke length, be mindful of side loads; an external guide rail or a guided cylinder is recommended to prevent rod bending and ensure long seal life.
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 SCJ100X400-100 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7068 N. The push force is higher because the single rod reduces the piston area on the pull side.
A rear-cap screw lets you shorten the stroke end by up to 100 mm from the nominal 400 mm maximum. You can replace a fixed-stroke SC100X400 with this SCJ model if you need field adjustability, provided the port size (PT1/2) and mounting style match. The SCJ body is slightly longer to house the adjustment mechanism.
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