Airtac SCJ100 Standard Cylinder SCJ100X450-100
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-100 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, 450mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke450 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X450-100
The SCJ100X450-100 is a double-acting, single-rod pneumatic cylinder engineered for applications where the stroke end position must be tuned on the machine. A rear-cap adjusting screw provides a full 100 mm of adjustment range, allowing the effective stroke to be shortened from its 450 mm nominal maximum without changing the cylinder body. This 100 mm bore unit delivers a substantial 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa.
Built on a rugged tie-rod platform, the SCJ100 uses a 25 mm diameter piston rod with an M20x1.5 male thread and PT1/2 ports. The adjustable air cushion, with a 29 mm cushion length, provides smooth deceleration at the stroke end. The body length A(SCJ) is 245 mm, making it a compact solution for its force class. This model is configured with the standard TPU seal, PT threads, and a basic mounting style, ready for direct integration or custom bracketry.
Airtac SCJ100 Standard Cylinder SCJ100X450-100 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 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 SCJ100X450-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SCJ100X450-100 Is Used
Commissioning & Process Tuning
The 100 mm adjustment range lets technicians dial in the exact stroke end during initial machine setup without swapping cylinders or machining hard stops, dramatically reducing commissioning time for large assembly fixtures.
Product Format Changeover
In packaging or material handling lines, the stroke can be quickly re-adjusted for different product sizes or pallet dimensions. The 450 mm nominal stroke and 100 mm adjust range provide the flexibility to handle multiple formats with a single actuator.
Clamping & Pressing with Wear Compensation
For high-cycle clamping or pressing operations, the adjusting screw can be used to take up mechanical wear in tooling or workpieces over time, maintaining consistent clamp force and position without reprogramming the machine controller.
Is the Airtac SCJ100 Standard Cylinder SCJ100X450-100 the Right Cylinder?
Choose the SCJ100 when you need the force of a 100 mm bore—3927 N push at 0.5 MPa—with the ability to fine-tune the stroke end point. If your force requirement is lower, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and physical size. For a fixed, non-adjustable stroke, the standard SC100 series is a simpler alternative. This cylinder is a direct replacement for another AirTAC SCJ100 with a 450 mm nominal stroke, 100 mm adjust range, and PT ports.
At a 450 mm stroke, the piston rod is fully supported by the front bushing, but any significant side load from a misaligned tool or offset load can cause rod bending or premature seal wear. If your application cannot guarantee a purely axial load, use an external guide rail or switch to a guided cylinder assembly to protect the rod and ensure long service 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 SCJ100X450-100 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N. The pull force is lower than the push force because the piston rod reduces the effective area on the return side.
No. The SCJ100 is a standard double-acting cylinder and will not hold its position if air pressure is lost or the directional valve is centered. The adjusting screw only sets the physical stroke end limit; it is not a locking device. For load holding, you must add a pilot-operated check valve or an external mechanical rod brake.
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