The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-50SH 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, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-50SH is an 80 mm bore, double-acting, single-rod pneumatic cylinder from the AirTAC SCJ adjustable-stroke family. Its defining feature is a rear-cap adjusting screw that provides up to 50 mm of stroke-end reduction, allowing machine builders to fine-tune the piston stopping position in the field. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, making it a powerful workhorse for medium-duty automation tasks.
This specific configuration includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and is fitted with Viton (FKM) seals (-H), extending the operating temperature range to 0–150 °C for hot or aggressive environments. The 25 mm piston rod, PT3/8 ports, and a 28 mm air cushion ensure robust, controlled motion. The body length A(SCJ) is 239 mm, slightly longer than the fixed-stroke SC version to accommodate the adjustment mechanism.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-50SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 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. |
| ×200 | 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 range allows technicians to quickly dial in the perfect stroke end position during machine commissioning without swapping cylinders or fabricating custom hard stops.
With Viton seals rated for 150 °C, this cylinder is ideal for actuating gates, diverters, or clamps near ovens, autoclaves, or hot-forming presses where standard seals would degrade.
In high-cycle assembly fixtures, the adjustable stroke can be periodically tweaked to compensate for mechanical wear in tooling or contact surfaces, maintaining precise part placement over time.
Choose the SCJ80 over the 63 mm bore when the 1559 N push force of the SCJ63 is insufficient for the application. If space is a constraint but force requirements are lower, stepping down to the 63 mm bore saves weight and air consumption. For applications that do not require field-adjustable stroke, the simpler fixed-stroke SC80 is a cost-effective alternative. This model is a direct replacement for any AirTAC SCJ80X200-50SH cylinder, matching bore, nominal stroke, 50 mm adjust range, PT ports, and sensor-ready magnet. For strokes of 200 mm, ensure the rod is adequately guided if significant side loads are present; consider an external guide rail to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
The theoretical push force at 0.5 MPa is 2513 N, and the pull force is 2268 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N. Note that pull force is lower due to the area of the 25 mm piston rod.
Yes, provided the bore, nominal stroke, port thread (PT), and magnet option match. The -50 suffix indicates a 50 mm adjustment range. Replacing with a different range, like a -30, will change the available stroke-end travel, so ensure the new range covers your machine's required adjustment window.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.