Airtac SCJ100 Standard Cylinder SCJ100X80-40S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X80-40S 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 SCJ100X80-40S
The SCJ100X80-40S is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a rear-cap adjusting screw that provides up to 40 mm of stroke-end adjustability. With an 80 mm nominal stroke and a 100 mm bore, this model 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. The built-in magnet allows for direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for precise end-of-stroke detection.
This cylinder uses a 25 mm diameter piston rod with an M20x1.5 thread and PT1/2 ports. The adjustable air cushion is 29 mm long, effectively decelerating the piston near the stroke end. The body length (A dimension) is 245 mm, making it a compact yet powerful solution for applications where the stroke end position needs to be fine-tuned on the machine without replacing the entire actuator.
Airtac SCJ100 Standard Cylinder SCJ100X80-40S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X80-40S |
|---|---|
| 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 SCJ100X80-40S
| 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 SCJ100X80-40S Is Used
Commissioning Fine-Tuning
Ideal for setting precise end stops during initial machine setup, allowing engineers to dial in the 80 mm stroke by up to 40 mm without swapping cylinders.
Format Changeover
Quickly adjust the stroke end for different product sizes on a packaging line, using the rear screw to accommodate a new box height or pallet dimension.
Wear Compensation
Take up mechanical play or tooling wear over time by incrementally extending the effective stroke, maintaining consistent clamping or pressing force.
Is the Airtac SCJ100 Standard Cylinder SCJ100X80-40S the Right Cylinder?
Choose the SCJ100X80-40S when you need to dial in the stroke end position during commissioning or for format changeovers, leveraging its 40 mm adjustment range. If your application requires a higher force class, step up to the SCJ125 bore, which provides 6136 N of push force at 0.5 MPa. For a fixed-stroke solution without adjustability, the standard SC100 series is the direct alternative. This model is a direct replacement for any AirTAC SCJ100X80-40S with PT ports and a magnet. For strokes of 300 mm or more, evaluate the rod's side-load capacity and consider an external guide to prevent bending.
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 SCJ100X80-40S 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 reaches 7068 N.
A screw in the rear cap limits the piston's return stroke end. Turning the screw shortens the effective stroke by up to 40 mm from the nominal 80 mm, allowing for field adjustment without disassembling the cylinder.
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