The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-50STC 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, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X100-50STC is a double-acting, single-rod pneumatic cylinder from AirTAC, engineered with a rear adjusting screw that provides a 50 mm field-adjustable stroke range. With an 80 mm bore delivering 2513 N of push force at 0.5 MPa, this model is ideal for applications where the end position needs fine-tuning during commissioning or format changeovers without replacing the cylinder. The built-in magnet enables direct mounting of CMSG/DMSG sensors for reliable end-of-stroke detection.
This tie-rod cylinder features a 25 mm diameter piston rod, PT3/8 ports, and an adjustable air cushion for smooth deceleration. The centre trunnion (TC) mounting, supplied with the TCM1 bracket, allows the cylinder to pivot, accommodating swinging loads. Its body length A(SCJ) is 239 mm, providing a compact yet powerful solution for dynamic industrial automation tasks.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-50STC |
|---|---|
| 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 adjustable stroke allows technicians to precisely dial in the end-stop position on new assembly lines, compensating for minor variations in fixture placement without needing to swap out the cylinder.
Quickly adapt the cylinder's stroke to handle different product sizes on a packaging line. The centre trunnion mount lets the cylinder body pivot, ideal for actuating gates or diverters that must swing through an arc.
In high-cycle clamping or pressing operations, the stroke can be incrementally extended via the rear screw to compensate for wear on tooling or workpieces, maintaining consistent process force without reprogramming.
Select the SCJ80X100-50STC when you need a robust 80 mm bore cylinder with the flexibility to adjust the stroke end by up to 50 mm on the machine. If the 2513 N push force at 0.5 MPa is insufficient, stepping up to the 100 mm bore (SCJ100, 3927 N push) adds significant force capacity; if it is excessive, the 63 mm bore (SCJ63, 1559 N push) offers a lighter, more compact alternative. For applications requiring a fixed, non-adjustable stroke, the standard SC80 series is a direct substitute.
This specific model, SCJ80X100-50STC, is configured with a magnet (S), centre trunnion mount with TCM1 bracket (TC), TPU seals, and PT ports. A direct replacement must match the 80 mm bore, 100 mm nominal stroke, 50 mm adjustment range, and this exact mounting and sensor option. For strokes of 300 mm or more, consider an external guide rail or a guided cylinder to protect the 25 mm rod from side-load deflection and ensure long seal life.
Adjustable-stroke checklist
Being a single-rod cylinder, push and pull forces differ. At 0.5 MPa, 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 50 mm stroke adjustment does not alter the cylinder's force output.
Yes, provided the bore, nominal stroke, and mounting style match. The SCJ80X100-50STC is a direct dimensional replacement for an SC80X100 cylinder when you need the added 50 mm adjustable stroke range. It uses the same F-SC80TC centre trunnion mounting kit and PT3/8 ports.
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