Airtac SCJ100 Standard Cylinder SCJ100X40-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X40-40 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, 40mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke40 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X40-40
The SCJ100X40-40 is a double-acting, single-rod pneumatic cylinder with a 100 mm bore and a nominal 40 mm stroke, giving you up to 40 mm of field-adjustable stroke-end control via the rear-cap screw. This puts it in a high-force class, delivering 3927 N of push force and 3681 N of pull force at a standard 0.5 MPa supply, with a maximum push thrust of 7068 N at the 0.9 MPa operating limit.
The 25 mm diameter piston rod and PT1/2 port thread handle rapid cycling, while the 29 mm air cushion decelerates the piston quietly at stroke end. The body length A(SCJ) is 245 mm, making it a compact adjustable-stroke solution for heavy-duty positioning tasks that demand on-machine fine-tuning without swapping the cylinder.
Airtac SCJ100 Standard Cylinder SCJ100X40-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X40-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 40 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 SCJ100X40-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SCJ100X40-40 Is Used
End-Stop Calibration
Fine-tune the final position of a heavy press platen or clamping fixture by up to 40 mm without removing the cylinder, speeding up initial machine setup and periodic recalibration.
Wear Compensation
Adjust the stroke end on a large stopper or diverter gate to compensate for gradual wear on contact pads, maintaining precise part placement on the line without mechanical shims.
Format Changeovers
Quickly adapt the stroke of a heavy-duty pusher for different product sizes in packaging or palletizing equipment, using the rear screw to set the new push distance in seconds.
Is the Airtac SCJ100 Standard Cylinder SCJ100X40-40 the Right Cylinder?
Choose the SCJ100X40-40 when you need a high-force, 100 mm bore cylinder and the ability to dial in the stroke end by up to 40 mm during commissioning or changeovers. If your force requirement is lower, stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa, saving space and air consumption. For a fixed, non-adjustable stroke, the standard SC series is a simpler alternative. This model is a direct replacement for another AirTAC SCJ adjustable-stroke cylinder matching the 100 mm bore, 40 mm nominal stroke, 40 mm adjust range, PT port thread, and basic mounting configuration.
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 SCJ100X40-40 FAQ
At 0.5 MPa, the cylinder produces 3927 N of push force and 3681 N of pull force. The maximum push force at the 0.9 MPa operating limit is 7068 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the return side.
A screw in the rear cap lets you shorten the stroke end by up to 40 mm. It sets a mechanical stop for the piston, so the 40 mm nominal stroke is the maximum; you can reduce it anywhere within that 40 mm range to fine-tune the piston's final position without changing the cylinder body.
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