Airtac SCJ100 Standard Cylinder SCJ100X350-75
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X350-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X350-75
The SCJ100X350-75 is a double-acting, single-rod pneumatic cylinder with a 100 mm bore and a nominal 350 mm stroke, delivering a substantial push force of 3927 N at 0.5 MPa. Its defining feature is the rear-cap adjusting screw, which provides up to 75 mm of field-adjustable stroke-end reduction, allowing precise mechanical end-stop tuning without removing the cylinder from the machine.
This tie-rod cylinder uses a 25 mm diameter piston rod and PT1/2 ports, with an adjustable air cushion length of 29 mm to decelerate the piston smoothly. The body length A(SCJ) is 245 mm, and the maximum operating pressure is 1.0 MPa, at which point the cylinder generates a theoretical push force of 7068 N.
Airtac SCJ100 Standard Cylinder SCJ100X350-75 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X350-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 75 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 SCJ100X350-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ100X350-75 Is Used
Format Changeovers on Packaging Lines
The 75 mm adjustment range lets operators quickly dial in a new stop position for different box or carton sizes on a packaging machine, eliminating the need for mechanical stop rework during product changeovers.
Wear Compensation in Heavy-Duty Clamping
In high-cycle clamping fixtures for large workpieces, the stroke-end screw can be advanced to compensate for jaw or pad wear over time, maintaining consistent clamping force and stroke without replacing the entire actuator.
Commissioning & End-Stop Tuning
During machine commissioning, the adjustable stroke allows engineers to empirically find the perfect end-stop position for a 350 mm stroke actuator, fine-tuning the motion profile of a heavy transfer gate or lift mechanism on the fly.
Is the Airtac SCJ100 Standard Cylinder SCJ100X350-75 the Right Cylinder?
Select this SCJ100X350-75 when you need a powerful, field-tunable stroke end within a 75 mm window for a 350 mm nominal stroke. If the force is over-specified, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) reduces energy consumption and physical size. For applications where the stroke length is fixed and never needs adjustment, a standard SC100X350 fixed-stroke cylinder is a simpler, more cost-effective alternative.
For this 350 mm stroke, be mindful of side-loading, which can cause rod bending and premature seal wear. If the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder. A direct replacement must match the 100 mm bore, 350 mm nominal stroke, 75 mm adjust range, PT port thread, basic mounting, and the SCJ series.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ100X350-75 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7068 N. The push force is always higher than the pull force because it is a single-rod cylinder.
Yes, this is a direct drop-in replacement for any AirTAC SCJ100X350-75 cylinder. To ensure full compatibility, verify that the replacement has the same 100 mm bore, 350 mm nominal stroke, 75 mm adjust range, PT port threads, and basic mounting configuration.
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