Airtac SCJ100 Standard Cylinder SCJ100X80-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X80-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø100mm bore, 80mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke80 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X80-40
The SCJ100X80-40 is a double-acting, single-rod pneumatic cylinder from AirTAC that puts stroke-end adjustment directly into the rear cap. With a 100 mm bore and an 80 mm nominal stroke, the integrated screw lets you shorten the stroke end by up to 40 mm without removing the cylinder or adding external stops—ideal for commissioning tweaks or format changes on medium-to-large tooling. It delivers 3927 N of push force at 0.5 MPa and 7068 N at the maximum operating pressure of 0.9 MPa.
Built on a robust tie-rod construction with a 25 mm diameter piston rod, PT1/2 ports, and a 29 mm air cushion, this cylinder handles demanding industrial cycles. The body length A(SCJ) is 245 mm, and the standard speed range is 30-800 mm/s. Like every SCJ, it relies on filtered compressed air and does not include a magnet in this basic configuration—matching a straightforward replacement for an existing un-sensored unit.
Airtac SCJ100 Standard Cylinder SCJ100X80-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X80-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 80 mm |
| Stroke adjustment | Up to 40 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 SCJ100X80-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×80 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ100X80-40 Is Used
Clamp Stroke Tuning
Adjust the rear screw to set the exact clamping depth on a welding or assembly fixture, accommodating slight variations in part thickness without reprogramming the machine.
Product Stop Positioning
Fine-tune the end position of a heavy-duty product stop on a conveyor line. The 40 mm adjustment range allows operators to quickly adapt to different pallet or case sizes.
Press-Fit Depth Control
Dial in the final press depth on a bearing or bushing insertion station. The 7068 N of force at 0.9 MPa provides ample power, while the screw ensures consistent, repeatable depth.
Is the Airtac SCJ100 Standard Cylinder SCJ100X80-40 the Right Cylinder?
Choose the SCJ100X80-40 when you need to dial in a precise end position on a 100 mm bore actuator without swapping parts. If your force requirement drops, the 80 mm bore SCJ pushes 2513 N at 0.5 MPa and has a shorter 239 mm body; if you need more, the 125 mm bore delivers 6136 N. This is a single-rod cylinder, so push force is greater than pull—verify your retract load against the 3681 N pull force at 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC100X80 is a direct alternative. When ordering a replacement, match the 100 mm bore, 80 mm nominal stroke, -40 adjust range, PT ports, and basic mounting. If your stroke exceeds 300 mm in the future, consider an external guide to protect the 25 mm rod from side loads.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ100X80-40 FAQ
At the standard 0.5 MPa, it generates 3927 N pushing and 3681 N pulling. At the maximum operating pressure of 0.9 MPa, push force reaches 7068 N. The theoretical force at 1.0 MPa is 801 kgf. Because it is a single-rod cylinder, push force is always higher than pull force.
Yes, this is a direct dimensional and functional replacement for any AirTAC SCJ100X80-40 with PT ports and basic mounting. The 100 mm bore, 80 mm nominal stroke, 40 mm adjustment range, and tie-rod body are identical. If your old unit had a magnet, you would need the -S variant; if it had a foot mount, you would order the LB version.
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