The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø100mm bore, 450mm nominal stroke, PT1/2 ports and adjustable end cushioning.
The SCJ100X450-10 is a double-acting, single-rod pneumatic cylinder that puts 3927 N of push force at your command at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa. Its key differentiator is the rear-cap adjusting screw, which lets you fine-tune the stroke end position by up to 10 mm without removing the cylinder from the machine—perfect for dialling in precise end-of-travel during commissioning or format changes.
Built on a rugged tie-rod platform with a 25 mm diameter piston rod and PT1/2 ports, this 100 mm bore actuator provides a 29 mm air cushion to decelerate the piston smoothly. The body length A(SCJ) is 245 mm, making it a compact solution for a 450 mm nominal stroke that stays well within the 1500 mm maximum standard stroke for this bore.
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 10 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.
| 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
During machine setup, the 10 mm adjustment screw allows technicians to dial in the exact stopping point for a clamping or pressing operation without shimming or repositioning the entire cylinder body.
In high-cycle material handling, mechanical end-stops can wear over time. The SCJ's adjustable stroke lets operators quickly compensate for this wear by extending the rod's travel, maintaining consistent positioning.
For packaging lines that run multiple box sizes, the rear screw provides a fast, tool-free method to adjust the pusher stroke length by up to 10 mm, significantly reducing changeover time between batches.
Choose the SCJ100X450-10 when you need substantial force for a mid-range stroke and the ability to tweak the end position by a few millimetres. If your application demands even higher force, stepping up to the 125 mm bore provides 6136 N of push at 0.5 MPa. For a simpler, fixed-stroke solution without the adjustment screw, the standard SC100X450 is the direct alternative. This model is a direct dimensional replacement for another AirTAC SCJ100X450-10 with PT ports and basic mounting. For strokes of 300 mm or more, always assess side-loading on the 25 mm rod; if the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 3927 N and the pull force is 3681 N. The pull force is lower because the 25 mm piston rod reduces the effective area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N.
A rear-cap screw physically limits the piston's stroke end by up to 10 mm, giving you a field-adjustable end position. It does not adjust speed or force. Importantly, this cylinder will not hold its position if air pressure is lost; an external mechanical lock or pilot-operated check valve is required for load-holding applications.
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