The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-50STC 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, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-50STC is an 80 mm bore double-acting single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw provides a 50 mm adjustment range, letting you fine-tune the stroke end position without removing the cylinder. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, driven by a 25 mm diameter piston rod.
This model includes a built-in magnet (S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and ships with a TC centre trunnion pivot for swinging applications. The trunnion is supplied complete with the TCM1 bracket, part code F-SC80TC. The body length A(SCJ) is 239 mm, and the standard PT3/8 ports provide reliable air connection for speeds up to 800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-50STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 500 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. |
| ×500 | 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.
A 500 mm stroke with 50 mm of fine adjustment lets operators set the exact stop position for different box sizes on a conveyor line without mechanical rework.
The 2513 N push force at 0.5 MPa clamps large workpieces securely. The adjusting screw allows quick stroke-end changes between part batches, reducing setup time.
In high-cycle pressing operations, the 50 mm adjustment range can be used to compensate for tooling wear over time, maintaining consistent end-position pressure.
Choose the SCJ80X500-50STC when you need a mid-range force class and the ability to dial in the stroke end on a 500 mm nominal stroke. For a step down in force, the 63 mm bore SCJ offers 1559 N push; for a significant step up, the 100 mm bore provides 3927 N push. The 50 mm adjustment range is ideal for commissioning trials and wear take-up on long-stroke applications.
At a 500 mm stroke, manage side loads carefully to prevent rod bending. Use an external guide rail or consider a guided cylinder if the load is not perfectly axial. This SCJ directly replaces another AirTAC SCJ80 cylinder with a 500 mm stroke, 50 mm adjust range, PT ports, TC mount, and magnet sensor option.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force 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. The pull force is lower because the 25 mm piston rod reduces the effective piston area on the return stroke.
It can replace another AirTAC SCJ80 adjustable-stroke cylinder with a 500 mm nominal stroke and 50 mm adjust range, provided the port thread (PT), centre trunnion mount (TC), and magnet sensor option (S) match. It is not a drop-in replacement for a standard fixed-stroke SC cylinder due to the longer body length required for the adjusting screw mechanism.
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