The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X80-40TC 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, 80mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X80-40TC is an 80 mm bore double-acting single-rod cylinder that lets you fine-tune the stroke end by up to 40 mm using the rear adjusting screw, without swapping the unit. It delivers 2513 N of push force at 0.5 MPa and 4523 N at the 0.9 MPa maximum operating pressure, making it a strong mid-range actuator for tasks that need on-machine adjustability.
This model is configured with a centre trunnion (TC) mount, supplied with the TCM1 bracket (order code F-SC80TC), so the cylinder can pivot as it strokes. The 25 mm rod, PT3/8 ports, and 28 mm air cushion are standard for the 80 bore. Body length A(SCJ) is 239 mm, slightly longer than the fixed-stroke SC version to house the stroke-adjust mechanism.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X80-40TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 80 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. |
| ×80 | 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.
Quickly adjust the end stop by up to 40 mm when a packaging machine switches between different box heights, eliminating manual stop repositioning.
Dial in the exact clamping stroke on a welding fixture to accommodate slight variations in workpiece thickness without reprogramming the controller.
Set the precise open angle of a material diverter gate on a conveyor line, compensating for mechanical wear over time without replacing the cylinder.
Step up to the 100 mm bore SCJ if you need more force (3927 N push at 0.5 MPa); step down to the 63 mm bore (1559 N push at 0.5 MPa) if space or air consumption is tight. Choose this SCJ over a fixed-stroke SC when you need to dial in the end position during commissioning or after tooling wear. For a direct replacement, match the 80 mm bore, 80 mm nominal stroke, 40 mm adjust range, PT3/8 ports, and TC centre trunnion mount. At this 80 mm stroke, side-loading is not a primary concern, but if the rod sees significant radial force, add an external guide rail.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder produces 2513 N pushing and 2268 N pulling. At the maximum operating pressure of 0.9 MPa, the 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 the 40 mm adjustable stroke feature. The SCJ80X80-40 has the same 80 mm nominal maximum stroke and 80 mm bore, but its body is longer (A=239 mm). Ensure your mounting arrangement accommodates the extra length and the rear adjusting screw. The TC mount also requires the TCM1 bracket.
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