The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X160-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø80mm bore, 160mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X160-20 adjustable-stroke cylinder delivers 2513 N of push force at 0.5 MPa, making it a robust choice for mid-range pneumatic applications that require on-the-fly stroke tuning. Its 25 mm diameter rod and PT3/8 port ensure solid air flow for consistent cycling, while the rear adjusting screw provides up to 20 mm of stroke-end reduction without dismounting the cylinder.
With a body length A of 239 mm and a 28 mm cushion, this double-acting, single-rod unit decelerates loads smoothly. The adjustable feature is ideal for commissioning trials or processes where the end position needs fine-tuning after installation, eliminating the need for external hard stops.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X160-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 20 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. |
| -20 | 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 stroke end for different product sizes on a packaging line without swapping cylinders or adding mechanical stops.
Take up mechanical play in clamping or pressing fixtures over time by advancing the stroke end with the rear screw.
Fine-tune the actuator's stop position during machine commissioning to achieve precise part alignment.
Choose the SCJ80X160-20 when you need to dial in the stroke end position within a 20 mm window. For higher force, the SCJ100 series offers 3927 N push at 0.5 MPa; for a lighter, more compact option, the SCJ63 provides 1559 N. If your application does not require stroke adjustability, the fixed-stroke SC80X160 is a direct dimensional match. For strokes over 300 mm, consider an external guide to protect the 25 mm rod from side loads.
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, the push force reaches 4523 N.
A screw in the rear cap limits the piston's retraction, allowing you to shorten the 160 mm nominal stroke by up to 20 mm. It sets the stroke end position and does not adjust force or speed.
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