Airtac SCJ100 Standard Cylinder SCJ100X75-30N
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-30N 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, 75mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke75 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-30N
The SCJ100X75-30 delivers a robust 3927 N of push force at 0.5 MPa, making it a workhorse for heavy-duty applications where the stroke end needs fine-tuning. Its rear-cap adjusting screw provides up to 30 mm of stroke-end reduction, allowing you to dial in the exact stopping position without swapping the cylinder or adding external hard stops.
This double-acting, single-rod cylinder features a 25 mm diameter rod and PT1/2 ports, with an adjustable air cushion to decelerate loads smoothly. The nitrile (NBR) seals offer reliable performance within the standard -20 to +70 °C temperature range, and the body length A(SCJ) is 245 mm, providing a compact yet powerful package for its force class.
Airtac SCJ100 Standard Cylinder SCJ100X75-30N Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-30N |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 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 SCJ100X75-30N
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SCJ100X75-30N Is Used
Format Changeovers
Quickly adjust the end-stop position for different product sizes on packaging or palletizing machinery, reducing downtime between production runs.
Clamping & Pressing
Fine-tune the final clamping depth in assembly fixtures or pressing operations to accommodate part tolerances without reprogramming the machine controller.
Material Stops
Set a precise, repeatable stop point for heavy workpieces on a conveyor line, with the 30 mm adjustment range allowing for quick repositioning.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-30N the Right Cylinder?
Choose the SCJ100X75-30 when you need substantial force and the ability to fine-tune the stroke end during commissioning or changeovers. If your application requires even more force, stepping up to the 125 mm bore provides 6136 N of push force at the same 0.5 MPa pressure. For a simpler, fixed-stroke solution without the rear adjustment mechanism, the standard SC100X75 is the direct alternative. When replacing this unit, match the 100 mm bore, 75 mm nominal stroke, 30 mm adjust range, PT port thread, and NBR seal material to ensure identical form, fit, and function.
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 SCJ100X75-30N FAQ
At the standard 0.5 MPa operating pressure, this cylinder provides 3927 N of push force and 3681 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7068 N.
A screw mechanism in the rear cap allows you to shorten the stroke end by up to 30 mm from the nominal 75 mm stroke. This is a mechanical stop adjustment, not a pressure or speed control, and it does not hold the piston in place if air pressure is lost—an external lock or brake is needed for load holding.
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