The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-50SH 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. Ø80mm bore, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
This SCJ80X100-50SH adjustable-stroke cylinder delivers 2513 N of push force at 0.5 MPa, making it a robust choice for mid-range industrial automation tasks. The 50 mm rear adjusting screw provides a wide window for fine-tuning the stroke end position on the fly, which is especially useful during commissioning or for accommodating part tolerance variations without swapping the entire unit.
The cylinder features a 25 mm diameter piston rod and a PT3/8 port. This specific variant is built with high-temperature Viton (FKM) seals, extending the operating range from 0 to +150 °C, and includes a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors. The body length (A dimension) for this SCJ series is 239 mm.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-50SH |
|---|---|
| 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.
Quickly dial in a new stroke end position for packaging or labeling machines when switching between product sizes, minimizing downtime.
The Viton seals allow reliable clamping in autoclaves, heated presses, or foundry equipment where ambient temperatures reach up to 150 °C.
The built-in magnet enables precise end-of-stroke detection with reed or solid-state sensors, ideal for sequencing in automated assembly cells.
Choose the SCJ80 when you need the field-adjustable stroke end and the force class of an 80 mm bore. If your application requires more force, stepping up to the 100 mm bore provides 3927 N of push at the same 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC80 fixed-stroke cylinder is a more economical choice. To replace this unit, match the 80 mm bore, 100 mm nominal stroke, 50 mm adjust range, PT port thread, and the -S magnet option. Since the nominal stroke is 100 mm, standard mounting is sufficient for most axial loads.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it generates 2513 N of push force and 2268 N of pull force. The maximum push force at 0.9 MPa is 4523 N.
A screw in the rear cap allows you to shorten the stroke end by up to 50 mm. The 100 mm in the model code is the nominal maximum stroke; the effective stroke can be field-adjusted anywhere between 50 mm and 100 mm.
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