Airtac SCJ100 Standard Cylinder SCJ100X450-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 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-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X450-30
The SCJ100X450-30 is a double-acting, single-rod tie-rod cylinder that puts fine stroke-end adjustment at your fingertips. With a 100 mm bore delivering 3927 N of push force at 0.5 MPa (up to 7068 N at 0.9 MPa), it handles heavy positioning and clamping tasks where the end-stop must be dialled in precisely during commissioning or changeover. The 30 mm rear adjusting screw lets you shorten the effective stroke without swapping the cylinder or adding external hard stops.
This model uses a 25 mm diameter piston rod and PT1/2 ports, with a 29 mm adjustable air cushion to decelerate the load smoothly. The body length A(SCJ) is 245 mm, and the standard stroke of 450 mm is well within the 1500 mm maximum for this bore. The default configuration comes with a TPU seal, PT threads, and a basic mount, ready to accept the SCJ mounting subset (FA, LB, or TC with TCM1 bracket).
Airtac SCJ100 Standard Cylinder SCJ100X450-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 30 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 SCJ100X450-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ100X450-30 Is Used
Format Changeover Stops
On packaging or filling lines, the 30 mm screw adjustment allows operators to quickly reset the end position for different box heights or container sizes without mechanical rework, keeping changeover times short.
Clamp Stroke Fine-Tuning
In heavy-duty welding or assembly fixtures, the adjustable stroke lets you dial in the exact clamping point to accommodate part tolerance stack-up or tooling wear, ensuring consistent pressure without crushing the workpiece.
Commissioning & Process Ramp-Up
During new machine bring-up, engineers can incrementally adjust the cylinder's end-stop to find the optimal actuator position for a prototype process, then lock the screw setting for production runs.
Is the Airtac SCJ100 Standard Cylinder SCJ100X450-30 the Right Cylinder?
Choose the SCJ100X450-30 when you need robust force in the 4000–7000 N class and the ability to fine-tune the stroke end by up to 30 mm on the machine. If your force requirement is lower, stepping down to the 80 mm bore (2513 N push at 0.5 MPa) saves space and air consumption; for higher force, the 125 mm bore delivers 6136 N at the same pressure. For applications that do not need field adjustment, the fixed-stroke SC100X450 is a simpler, slightly shorter alternative.
At a 450 mm stroke, be mindful of side-loading that can bend the 25 mm rod or wear the bearing. If the load is not guided, consider adding an external guide rail or switching to a guided cylinder. For direct replacement, match the bore (100), nominal stroke (450), adjust range (-30), PT port thread, and the same mounting style from the SCJ subset (basic, FA, LB, or TC).
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ100X450-30 FAQ
The theoretical push force is 3927 N at 0.5 MPa, 5497 N at 0.7 MPa, and 7068 N at the maximum operating pressure of 0.9 MPa. The pull force on the return stroke is lower due to the 25 mm rod area, delivering 3681 N at 0.5 MPa. Always factor in a safety margin for real-world dynamic loads.
Yes, provided the mounting and port configuration match. The SCJ100X450-30 has the same bore, rod size, and port thread (PT1/2) as the SC100, but the body is slightly longer to house the rear adjusting screw. You must also ensure the 30 mm adjustment range does not interfere with your machine's cycle. The mounting accessories (FA, LB, TC) are interchangeable between SC and SCJ families.
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