Airtac SCJ100 Standard Cylinder SCJ100X350-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X350-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 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-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X350-30
The SCJ100X350-30 is a double-acting, single-rod tie-rod cylinder that delivers a substantial 3927 N of push force at 0.5 MPa (7068 N at 0.9 MPa), making it a powerful actuator for heavy industrial positioning. Its key differentiator is the rear-cap adjusting screw, which provides up to 30 mm of field-adjustable stroke-end reduction, allowing engineers to fine-tune the stopping position of a 350 mm nominal stroke without dismounting the cylinder or machining external hard stops.
This model uses a 25 mm diameter piston rod with an M20x1.5 male thread and PT1/2 ports, and features an adjustable air cushion with a 29 mm cushion length to decelerate high-inertia loads smoothly. The body length A(SCJ) is 245 mm, and the operating pressure ranges from 0.15 to 1.0 MPa. As a tie-rod design, it is not interchangeable with ISO 15552 profiles, but it offers a robust, serviceable construction for demanding factory environments.
Airtac SCJ100 Standard Cylinder SCJ100X350-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X350-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 30 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 SCJ100X350-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ100X350-30 Is Used
End-Stop Fine-Tuning on Presses
The 30 mm screw adjustment lets operators dial in the exact bottom-dead-centre position of a forming or assembly press after tooling changes, compensating for die wear or material thickness variations without reprogramming the machine.
Product Gate or Diverter Positioning
In packaging or logistics lines, the adjustable stroke allows the cylinder's push arm to be perfectly aligned for different box or pallet sizes, ensuring reliable product diverting without mechanical modification during format changeovers.
Commissioning & Process Development
During new machine commissioning, the SCJ100X350-30 allows process engineers to empirically find the optimal 320-350 mm stroke for a glue bead, weld, or cut-off operation, then lock it in place once the process window is validated.
Is the Airtac SCJ100 Standard Cylinder SCJ100X350-30 the Right Cylinder?
Choose the SCJ100 when your application requires a force class around 3927 N push at standard shop air; if you need more force, step up to the SCJ125 which provides 6136 N push at the same pressure. If your stroke length is fixed and will never need field adjustment, the standard SC100 fixed-stroke cylinder is a simpler, more cost-effective alternative. For this 350 mm stroke, consider the potential for side-loading and rod bending—if the load is not guided, use an external linear guide or switch to a guided cylinder to protect the rod bearings and seal.
This SCJ100X350-30 is a direct replacement for an existing AirTAC SCJ100 adjustable-stroke cylinder with the same 100 mm bore, 350 mm nominal stroke, and 30 mm adjustment range, using PT port threads and basic mounting. To add position sensing, specify the -S magnet option; for pivoting motion, the TC centre trunnion mount with TCM1 bracket is the correct SCJ mounting accessory.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ100X350-30 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N (the difference is due to the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N. These values are identical to the fixed-stroke SC100 of the same bore.
No. The SCJ100X350-30 is a standard double-acting cylinder and will drift or drop if air pressure is lost or the valve is centered. The rear adjusting screw only sets the stroke end position and does not act as a mechanical lock. For load holding without live pressure, you must add an external rod brake or a pilot-operated check valve.
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