
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-50SH is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø100mm bore, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
The SCJ100X300-50SH is a double-acting, single-rod pneumatic cylinder from the AirTAC SCJ tie-rod series, featuring a rear-cap adjusting screw that provides up to 50 mm of field-adjustable stroke reduction. With a 100 mm bore, it generates a substantial 3927 N of push force at 0.5 MPa, making it a powerful solution for heavy-duty positioning tasks where the end-of-stroke position needs fine-tuning without swapping the cylinder.
This specific configuration includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a Viton (FKM) seal (-H) for reliable operation in high-temperature environments up to 150°C. The 25 mm piston rod and 29 mm air cushion ensure robust, decelerated end-of-stroke performance, while the standard PT ports simplify integration into existing pneumatic circuits.
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-50SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 mm |
| Stroke adjustment | Up to 50 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.
| 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | Nominal (maximum) stroke length in mm. |
| -50 | 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.
Quickly fine-tune the end-stop for different product sizes on a packaging line without mechanical adjustments, reducing downtime between batches.
The Viton seals withstand 150°C, making this cylinder ideal for precise, adjustable stroke clamping in heated press or welding fixture applications.
Use the 50 mm adjustment range to dial in the exact gate angle on a conveyor diverter, handling heavy parcels with the 3927 N push force.
Select the SCJ100 when your application demands a high-force actuator with the flexibility to adjust the stroke end on the machine. If 3927 N of push force at 0.5 MPa is insufficient, stepping up to the 125 mm bore provides 6136 N. For applications not requiring stroke adjustability, the fixed-stroke SC100 is a more economical choice. A direct replacement must match the 100 mm bore, 300 mm nominal stroke, 50 mm adjustment range, PT port thread, Viton seal, and built-in magnet. For this 300 mm stroke, consider an external guide rail or a guided cylinder if the load applies significant side forces, to prevent rod bending and ensure long seal life.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 3927 N and the pull force is 3681 N. The maximum push force at 0.9 MPa is 7068 N. Note that, as a single-rod cylinder, the push force is greater than the pull force due to the area of the 25 mm rod.
It is a direct physical and functional replacement for another AirTAC SCJ100X300-50SH cylinder with a PT port, magnet, and Viton seal. If your current cylinder has a different adjustment range, seal material, or lacks a magnet, verify that the 50 mm adjustment, Viton seal, and sensor compatibility meet your machine's requirements.
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