Airtac SCJ100 Standard Cylinder SCJ100X350-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X350-40 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, 350mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke350 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X350-40
The SCJ100X350-40 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides a 40 mm field-adjustable stroke range. With a 100 mm bore, it delivers a substantial 3927 N of push force at 0.5 MPa (7068 N at 0.9 MPa), making it suitable for heavy-duty clamping, pressing, or positioning tasks where the final stroke end must be dialed in precisely on the machine.
This model features a 25 mm piston rod, PT1/2 ports, and a 29 mm air cushion for smooth end-of-stroke deceleration. The tie-rod construction and 245 mm body length A(SCJ) provide a robust platform for industrial automation, while the rear screw allows operators to fine-tune the stroke end by up to 40 mm without dismounting the cylinder or changing tooling.
Airtac SCJ100 Standard Cylinder SCJ100X350-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X350-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 350 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 SCJ100X350-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SCJ100X350-40 Is Used
End-Stop Commissioning
During machine setup, the 40 mm adjusting screw allows technicians to fine-tune the final position of a heavy press platen or stop gate without iterative cylinder swaps, speeding up the commissioning process.
Wear Compensation
In high-cycle clamping fixtures, the adjustable stroke can be periodically advanced to compensate for pad or tooling wear, maintaining consistent clamping force without replacing the cylinder.
Product Format Changeover
On packaging or assembly lines running multiple product sizes, the stroke can be quickly shortened via the rear screw to match a new box height or part dimension, reducing changeover downtime.
Is the Airtac SCJ100 Standard Cylinder SCJ100X350-40 the Right Cylinder?
Choose the SCJ100X350-40 when you need high force in the 4000 N class and the ability to adjust the stroke end 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. For applications needing a fixed, non-adjustable stroke, the standard SC100X350 is a direct alternative with identical force output. This cylinder is a direct dimensional replacement for another AirTAC SCJ100X350-40 with the same PT ports and basic mounting.
At a 350 mm stroke, ensure the load is guided to prevent side-loading and rod bending. For unsupported loads, consider adding an external guide rail or switching to a guided cylinder series.
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 SCJ100X350-40 FAQ
At the standard 0.5 MPa operating pressure, the cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 7068 N. The pull force is lower due to the area of the 25 mm piston rod.
Yes, the SCJ100X350-40 is a direct replacement in terms of bore, nominal stroke, and mounting envelope, provided the additional length of the rear adjusting screw housing is accommodated. It allows you to fine-tune the stroke end by up to 40 mm, adding flexibility that the fixed-stroke SC does not have.
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