The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-20 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, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X60-20 is an 80 mm bore double-acting single-rod cylinder that delivers a substantial 2513 N of push force at 0.5 MPa, making it a workhorse for medium-to-heavy pneumatic tasks. Its defining feature is the rear-cap adjusting screw, which provides up to 20 mm of field-adjustable stroke reduction, allowing you to dial in the exact end position during commissioning or changeovers without replacing the cylinder or adding external hard stops.
This model uses a 25 mm diameter piston rod with a PT3/8 port and an M20x1.5 rod thread, and incorporates a 28 mm air cushion for smooth deceleration. The body length A for this SCJ series is 239 mm, slightly longer than a fixed-stroke SC due to the integrated adjustment mechanism. It is a genuine AirTAC component built for reliable, repeatable performance in industrial automation.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 60 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. |
| ×60 | 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.
During machine commissioning, the 20 mm adjustment screw allows technicians to precisely fine-tune the actuator's end-stop position to align with mating parts, eliminating the need for shims or custom brackets.
On a packaging line, quickly adjust the stroke end to accommodate a new box size or product height. The SCJ80X60-20 enables a single cylinder to handle multiple formats with a simple screw adjustment, reducing downtime.
In clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear on tooling or workpieces over time, maintaining consistent contact force and position without reprogramming the PLC.
Choose this 80 mm bore when your application requires a push force around 2513 N at standard shop air; if you need significantly less, stepping down to the 63 mm bore (1559 N push) can reduce air consumption and physical size. For applications demanding a fixed, unchangeable stroke, the standard SC series is a simpler, more cost-effective alternative. A direct replacement must match an AirTAC SCJ cylinder with an 80 mm bore, a 60 mm nominal stroke, a 20 mm adjustment range, and PT ports.
For this 60 mm stroke, the piston rod is well-supported within the bearing, but if you ever extend to a longer stroke, be mindful of side loads. Using an external guide rail or switching to a guided cylinder assembly will protect the rod bearing and seals from premature wear caused by bending moments.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The maximum push force at the 0.9 MPa operating limit is 4523 N. Because this is a single-rod cylinder, the pull force is always lower due to the rod area.
You can, provided the mounting and porting match. The SCJ80X60-20 is a direct dimensional replacement for another AirTAC SCJ of the same bore, stroke, and adjust range. It is not a drop-in for a fixed-stroke SC cylinder as the overall body length is longer to house the adjustment screw.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.