Airtac SCJ100 Standard Cylinder SCJ100X450-50
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 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-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X450-50
The SCJ100X450-50 is a double-acting, single-rod pneumatic cylinder engineered for applications demanding a long, field-tunable stroke. Its 100 mm bore generates a substantial 3927 N of push force at 0.5 MPa, while the rear-cap adjusting screw provides a 50 mm range to precisely dial in the stroke end position without removing the cylinder from the machine.
This model features a 25 mm diameter piston rod, PT1/2 port connections, and a 29 mm air cushion for smooth deceleration. The tie-rod construction and adjustable end-stop make it ideal for commissioning, format changeovers, and compensating for tooling wear in heavy-duty automation.
Airtac SCJ100 Standard Cylinder SCJ100X450-50 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 50 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 SCJ100X450-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ100X450-50 Is Used
Commissioning & Setup
Fine-tune the end-of-stroke position during initial machine commissioning with the 50 mm adjustment range, eliminating the need for shims or custom hard stops on large assembly fixtures.
Product Format Changeover
Quickly adapt the cylinder's stroke end for different product sizes on a packaging or palletizing line, reducing downtime between batches without swapping the actuator.
Tooling Wear Compensation
Compensate for gradual wear on clamps, pressing tools, or gripper jaws over time by adjusting the stroke end, maintaining consistent contact pressure and part quality.
Is the Airtac SCJ100 Standard Cylinder SCJ100X450-50 the Right Cylinder?
Step up to this 100 mm bore when the 2513 N push force of the SCJ80 is insufficient for your load. If you require a fixed, non-adjustable stroke, the standard SC100 series offers the same force output without the rear adjusting mechanism. For applications with significant side loading on this 450 mm stroke, an external guide rod assembly or a guided cylinder is recommended to prevent rod bending and ensure long seal life.
This cylinder is a direct replacement for another AirTAC SCJ100 adjustable-stroke unit with a 450 mm nominal stroke, 50 mm adjust range, PT ports, and basic mounting. Always verify that the replacement matches the bore, nominal stroke, adjust range, and port thread to guarantee identical performance.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ100X450-50 FAQ
At the standard 0.5 MPa operating pressure, the push force is 3927 N. The maximum push force at the 0.9 MPa upper limit is 7068 N. Because it is a single-rod cylinder, the pull force on the retract stroke is lower, at 3681 N at 0.5 MPa, due to the area of the 25 mm rod.
Yes, the SCJ100X450-50 can replace a fixed-stroke SC100X450 if you need the ability to fine-tune the stroke end. The mounting dimensions, port size (PT1/2), and force output are identical. The SCJ body is slightly longer to house the adjusting screw, so ensure you have clearance at the rear cap.
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