The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X25-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 25mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X25-30 is an 80 mm bore double-acting, single-rod cylinder with a rear-cap adjusting screw that provides up to 30 mm of field-adjustable stroke-end reduction. With a 25 mm rod and PT3/8 ports, it delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it a strong mid-range actuator for tasks that need precise mechanical stop tuning.
This model features a 28 mm air cushion for smooth deceleration and a body length A of 239 mm. The adjustable screw lets operators dial in the exact end position during commissioning or changeovers without dismounting the cylinder, ensuring consistent part placement and faster setup recovery.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X25-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 25 mm |
| Stroke adjustment | Up to 30 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. |
| ×25 | Nominal (maximum) stroke length in mm. |
| -30 | 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 stroke end position during initial machine setup. The 30 mm adjustment range allows engineers to compensate for stack-up tolerances in tooling and fixtures without machining custom stops.
Quickly adapt to different product sizes on a packaging or assembly line. Operators can reset the stroke end in seconds to match a new format, minimizing downtime between production runs.
Take up mechanical play or wear in linked components over time. The rear screw lets maintenance teams restore precise end positioning without disassembling the actuator or replacing parts.
Choose the SCJ80X25-30 when you need to fine-tune the stroke end stop within a 30 mm window without replacing the cylinder. If you require more force, the 100 mm bore SCJ100 series pushes 3927 N at 0.5 MPa; for a lighter, more compact solution, the 63 mm bore offers 1559 N. If your application does not require field adjustability, the fixed-stroke SC80 series provides the same force in a slightly shorter body. For direct replacement, match the 80 mm bore, 25 mm nominal stroke, 30 mm adjust range, PT3/8 ports, and basic mounting style.
Adjustable-stroke checklist
At 0.5 MPa, it produces 2513 N pushing and 2268 N pulling. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N.
Yes, if you need field-adjustable stroke end control. The SCJ80X25-30 matches the SC80 mounting footprint and porting, but the body is slightly longer to house the adjusting screw. Ensure your machine has clearance for the rear mechanism and that the 30 mm adjustment range covers your stroke variation needs.
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