The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X275-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø80mm bore, 275mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X275-10 is an 80 mm bore, single-rod double-acting cylinder that delivers a robust 2513 N of push force at 0.5 MPa, making it a solid choice for medium-to-heavy automation tasks. Its defining feature is the rear-cap adjusting screw, which provides a 10 mm field-adjustable stroke range, allowing you to fine-tune the 275 mm nominal stroke end position without removing the cylinder from the machine.
This tie-rod cylinder uses a 25 mm diameter piston rod and PT3/8 ports, with an adjustable air cushion (28 mm long) to decelerate the load smoothly at both ends of travel. The SCJ body length A is 239 mm, and the operating speed range is 30-800 mm/s. At the maximum operating pressure of 0.9 MPa, this unit generates a substantial 4523 N of push force.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X275-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 275 mm |
| Stroke adjustment | Up to 10 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. |
| ×275 | Nominal (maximum) stroke length in mm. |
| -10 | 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 10 mm rear adjustment screw lets technicians dial in the exact stroke end position during initial machine setup without swapping cylinders or fabricating custom hard stops, speeding up the commissioning process.
On a packaging line, the adjustable stroke allows operators to quickly shift the end position of a pusher or diverter arm by up to 10 mm to accommodate a new box or tray size, minimizing changeover downtime.
In a clamping or pressing fixture, the 10 mm adjustment range can be used to take up mechanical wear on contact pads or tooling over time, maintaining consistent clamping force without reprogramming the machine.
Choose this SCJ80X275-10 when you need a 275 mm stroke with a 10 mm window for on-machine fine-tuning, such as adjusting a stop position for different product sizes. If the 2513 N push force at 0.5 MPa is insufficient, stepping up to the 100 mm bore SCJ100 series provides 3927 N; if it is more than you need, the 63 mm bore offers 1559 N. For applications where the stroke is fixed and will never need adjustment, the standard SC80X275 fixed-stroke cylinder is a more economical alternative.
This cylinder is a direct replacement for an existing AirTAC SCJ80X275-10 with PT threads and basic mounting. For a stroke of 275 mm, be mindful of side loads. If the rod is pushing a misaligned or unguided load, use an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. Because this is a single-rod cylinder, the pull force is lower due to the area of the 25 mm rod. At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N.
You can, but the SCJ body is slightly longer to accommodate the adjusting mechanism. The SCJ80X275-10 is a direct dimensional match only for another SCJ80 with a 275 mm nominal stroke and 10 mm adjustment range. It will not be a drop-in fit for a fixed-stroke SC80, as the mounting dimensions and overall length differ.
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