The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-50H 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. Ø80mm bore, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X100-50 brings 80 mm bore force to applications needing on-machine stroke fine-tuning, with a rear-cap screw that shortens the stroke end by up to 50 mm. At 0.5 MPa it delivers 2513 N push and 2268 N pull, and at the full 1.0 MPa operating pressure it reaches 4523 N push—enough for pressing, clamping, and format-change tooling.
This model is fitted with Viton (FKM) seals, extending the operating temperature range to 0–150 °C for hot environments where standard TPU would degrade. The 25 mm piston rod and PT3/8 ports keep flow high, while the 28 mm air cushion at each end protects the 239 mm body length A(SCJ) from metal-to-metal impact.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-50H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| 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, 28 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×100 | 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.
The 50 mm adjustment screw lets operators compensate for platen wear or material thickness changes in heated laminating presses, with Viton seals handling the sustained 0–150 °C environment.
Fine-tune the open position of a product diverter gate on a conveyor line. The 2513 N push at 0.5 MPa moves heavy packages, and the screw sets the precise gate angle without mechanical shims.
On packaging machines running multiple box sizes, the adjustable stroke sets the correct insertion depth for each format. The 28 mm cushion absorbs the 4523 N peak force quietly at high speed.
Step up to the SCJ100 bore if you need 3927 N push at 0.5 MPa; step down to SCJ63 for 1559 N when space or air consumption matters more. Choose this SCJ adjustable-stroke design when you need to dial in the end position during commissioning or product changeovers—if the stroke is fixed and never adjusted, the standard SC80X100 is a simpler, lower-cost alternative. For a drop-in replacement, match an AirTAC SCJ80 cylinder with 100 mm nominal stroke, 50 mm adjust range, PT3/8 ports, and Viton seals. At 100 mm stroke side-load is minimal, but if the rod sees off-axis force, add an external guide rail.
Adjustable-stroke checklist
At 0.5 MPa it generates 2513 N push and 2268 N pull. At the maximum operating pressure of 1.0 MPa, push force reaches 4523 N. Because it is a single-rod cylinder, push force is always higher than pull force.
Yes, if you need the 50 mm stroke-end adjustment range. The SCJ80X100-50 shares the same bore, rod diameter (25 mm), and PT3/8 port as the SC80, but the body is slightly longer to house the adjusting screw. Ensure your mounting and sensor setup accommodates the extra length.
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