The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø80mm bore, 175mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X175-75 is an 80 mm bore double-acting single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the stop position by up to 75 mm without swapping the unit. Its 25 mm diameter rod delivers 2513 N of push force at 0.5 MPa, while the pull force is 2268 N due to the rod area, making it suitable for mid-range clamping, pressing, and positioning tasks where the stroke needs to be dialled in on the machine.
This tie-rod cylinder uses a rear-cap adjusting screw to set the stroke end within the -75 mm range, so the effective stroke can be shortened from the 175 mm nominal maximum. It features a 28 mm air cushion, PT3/8 ports, and an M20x1.5 rod thread. The SCJ body length A is 239 mm, slightly longer than the fixed-stroke SC of the same bore to accommodate the adjustment mechanism.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 75 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. |
| ×175 | Nominal (maximum) stroke length in mm. |
| -75 | 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 75 mm adjustment range allows technicians to fine-tune the end-stop during machine commissioning without removing the cylinder, speeding up the setup of packaging or assembly stations.
On a multi-product conveyor line, the SCJ80X175-75 lets operators quickly adjust a pusher or diverter stroke to handle different box sizes, reducing changeover time between production runs.
In a clamping fixture, the adjustable stroke end can be periodically advanced to compensate for pad wear or material thickness variation, maintaining consistent clamping force without replacing the cylinder.
Choose the SCJ80X175-75 when you need to commission a stroke precisely or accommodate format changes without external hard stops. If your force requirement grows, stepping up to the 100 mm bore provides 3927 N push at 0.5 MPa. For applications where the stroke never changes, the simpler fixed-stroke SC80 series is a more economical choice. If the load creates significant side forces, consider an external guide rail or a guided cylinder to protect the rod bearing.
For a direct replacement, match the 80 mm bore, 175 mm nominal stroke, -75 mm adjust range, PT3/8 ports, and basic mounting. If your current cylinder has a magnet, order SCJ80X175-75S. The SCJ mounting subset includes FA front flange, LB foot, and TC centre trunnion with TCM1 bracket; flange FB and clevis CA/CB are not available for this series.
Adjustable-stroke checklist
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, push force reaches 4523 N. The pull force is lower because the 25 mm rod reduces the effective piston area on the return stroke.
Yes, if you need field-adjustable stroke capability. The SCJ80X175-75 shares the same bore, port size (PT3/8), and mounting accessories as the SC80 series. Ensure the longer body length (239 mm A dimension) fits your space and match the port thread type (PT or G) and magnet option (S) to your existing setup.
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