The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X160-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 160mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X160-40 delivers a nominal 160 mm stroke with a 40 mm rear-cap adjustment screw, letting you fine-tune the stroke end position on the fly. At 0.5 MPa, it pushes with 2513 N and pulls with 2268 N, drawing air through PT3/8 ports. The 25 mm piston rod and 28 mm air cushion work together to handle mid-range automation tasks where stroke length needs to be dialled in precisely.
This double-acting, single-rod cylinder uses a tie-rod construction and is not an ISO 15552 profile unit. The body length A(SCJ) is 239 mm, and the adjustable screw shortens the stroke end by up to 40 mm without altering the bore or force output. It runs on 40 µm filtered air from 0.15 to 1.0 MPa and operates between -20 and +70 °C with the standard TPU seal.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X160-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 40 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. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Dial in the exact 160 mm stroke end during machine commissioning using the 40 mm adjustment range, eliminating the need to swap cylinders for minor positional changes.
Adjust the stroke end quickly when switching between product sizes on a packaging line, reducing downtime compared to fixed-stroke cylinders that require mechanical stop changes.
Take up mechanical play or seal wear over time by slightly extending the effective stroke with the rear screw, maintaining consistent actuator positioning without replacing the cylinder.
Step up to the 100 mm bore if you need 3927 N of push at 0.5 MPa; drop to 63 mm for a more compact 1559 N. If your stroke never needs field adjustment, the fixed-stroke SC80X160 is a simpler alternative. For a direct replacement, match an SCJ80X160-40 with PT threads, basic mounting, and no magnet. When side loads are present, add an external guide rail or switch to a guided cylinder, as the 25 mm rod is not designed to bear lateral forces.
Adjustable-stroke checklist
At 0.5 MPa, it generates 2513 N pushing and 2268 N pulling. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N. The pull force is lower because the 25 mm rod reduces the effective piston area on the return stroke.
Only if you need the adjustable stroke feature. The SCJ80X160-40 has a longer body (239 mm A-length) to house the adjusting screw. Mounting, port size, and rod dimensions are identical, but you must ensure the extra length fits your machine envelope.
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