Airtac SCJ100 Standard Cylinder SCJ100X300-75SH
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-75SH 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, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke300 mm
- Stroke adjust-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X300-75SH
The SCJ100X300-75SH is a 100 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a nominal 300 mm stroke that can be shortened by up to 75 mm via the rear-cap adjusting screw. This model is built with a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors and features high-temperature Viton (FKM) seals, extending the operating range from 0 to +150 °C. With a 25 mm diameter piston rod and PT1/2 port, it delivers a substantial 3927 N of push force at 0.5 MPa.
This adjustable-stroke design is ideal for applications requiring fine end-position tuning during commissioning, format changeovers, or to compensate for mechanical wear without replacing the cylinder. The body length A for this SCJ series is 245 mm, and the adjustable air cushion provides smooth deceleration. As a genuine AirTAC component, it ensures reliable performance in demanding hot-environment automation tasks.
Airtac SCJ100 Standard Cylinder SCJ100X300-75SH Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-75SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 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 SCJ100X300-75SH
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SCJ100X300-75SH Is Used
High-Temp Process Tuning
The 75 mm adjustment range and Viton seals allow operators to fine-tune the end-stop position for valves or gates in ovens, dryers, or autoclaves without shutting down the hot process line.
Heavy Part Ejection
With 3927 N of push force at 0.5 MPa, this cylinder can eject heavy parts from a mold. The adjustable stroke lets technicians dial in the exact ejection distance to prevent part damage during setup.
Wear Take-Up on Stops
On a high-cycle conveyor divert system, the mechanical stop pad wears down over time. The rear adjusting screw can be quickly turned to recover the precise divert position, extending the maintenance interval.
Is the Airtac SCJ100 Standard Cylinder SCJ100X300-75SH the Right Cylinder?
Select the SCJ100X300-75SH when you need a powerful, adjustable-stroke actuator for high-temperature environments. For applications requiring more force, stepping up to the 125 mm bore provides 6136 N of push at 0.5 MPa. If a fixed stroke is sufficient and cost is a primary concern, the standard SC100X300 cylinder is a more economical choice without the adjustable screw mechanism. This model is a direct replacement for another AirTAC SCJ100 cylinder with a 300 mm nominal stroke, 75 mm adjust range, PT ports, a magnet, and Viton seals.
For this 300 mm stroke length, be mindful of side-loading on the 25 mm rod. If the load is not guided externally, the bending moment can cause premature seal wear or rod damage. In such cases, pair the cylinder with an external linear guide or consider a guided cylinder solution to absorb transverse forces and ensure long service life.
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 SCJ100X300-75SH FAQ
At the standard 0.5 MPa operating pressure, this 100 mm bore cylinder generates 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 7854 N.
The SCJ features a rear-cap adjusting screw that limits the piston's retraction stroke end. You can shorten the stroke by up to 75 mm on this model without changing the cylinder body. This is different from a fixed-stroke SC cylinder, where the stroke is non-adjustable. The SCJ is ideal for applications needing on-machine fine-tuning, while the SC is a simpler, more cost-effective solution for fixed-motion tasks.
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