Airtac SCJ100 Standard Cylinder SCJ100X75-20H
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-20H is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 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-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-20H
The SCJ100X75-20H is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, built on a 100 mm bore platform. Its rear-cap adjusting screw provides up to 20 mm of fine-tuning for the stroke end position, making it ideal for commissioning and format changeovers. At 0.5 MPa, it delivers 3927 N of push force and 3681 N of pull force, driven by a 25 mm diameter piston rod.
This model is equipped with Viton (FKM) seals, extending its operating temperature range to 0–150°C for demanding hot-environment applications. The cylinder features a PT1/2 port, an M20x1.5 rod thread, and a 29 mm adjustable air cushion. With a body length of 245 mm, it is a direct fit for machinery requiring a genuine, high-temperature-capable AirTAC adjustable-stroke actuator.
Airtac SCJ100 Standard Cylinder SCJ100X75-20H Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-20H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 20 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 SCJ100X75-20H
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ100X75-20H Is Used
High-Temp Process Valve Actuation
The Viton seals and 20 mm stroke adjustment allow precise end-stop tuning of valves handling hot fluids or steam, ensuring a perfect seal without actuator swap-outs during thermal cycling.
Hot Press Clamping & Forming
Fine-tune the clamping stroke end on heated platen presses. The 3927 N push force at 0.5 MPa provides robust clamping, while the adjustable screw compensates for tooling wear without reprogramming.
Drying Oven Diverter Gates
Adjust the gate opening stroke in a high-temperature drying line. The 0-150°C seal rating ensures reliability, and the 20 mm adjustment range simplifies setup for different product heights.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-20H the Right Cylinder?
Select the SCJ100X75-20H when you need a high-force, adjustable-stroke solution in a high-temperature environment. If 3927 N of push force at 0.5 MPa is more than required, stepping down to an 80 mm bore reduces force to 2513 N. For applications needing a fixed, non-adjustable stroke, the standard SC100 series is a more economical choice. A direct replacement must match the 100 mm bore, 75 mm nominal stroke, 20 mm adjustment range, PT port thread, and Viton seals.
For a nominal stroke of 75 mm, rod bending from side loads is generally not a primary concern, but any off-axis force should be managed with an external guide rail. The SCJ100's basic mounting configuration can be upgraded with FA, LB, or TC brackets for secure installation.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ100X75-20H FAQ
At the standard 0.5 MPa operating pressure, this double-acting cylinder generates 3927 N of push force and 3681 N of pull force. The push force is higher because the single rod reduces the piston area on the pull side. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7068 N.
The rear-cap adjusting screw sets the stroke end position within a 20 mm range, allowing you to fine-tune the piston's stopping point. It is not a locking device. The cylinder will not hold a load if air pressure is lost or the valve is centered; an external mechanical lock or pilot-operated check valve is required for load holding.
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