The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X300-30S 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, 300mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X300-30S is an 80 mm bore double-acting cylinder with a 300 mm nominal stroke and a rear adjusting screw that provides up to 30 mm of field-adjustable stroke-end reduction. This model generates a push force of 2513 N at 0.5 MPa and 4523 N at the maximum operating pressure of 0.9 MPa, making it a powerful choice for heavy-duty positioning tasks. The built-in magnet allows for direct mounting of CMSG/DMSG/EMSG sensors to provide precise end-of-stroke feedback without additional brackets.
The 25 mm piston rod and PT3/8 ports deliver robust, responsive actuation. With a body length of 239 mm and a 28 mm air cushion, the unit is designed for reliable deceleration even under high inertial loads. This cylinder is a genuine AirTAC product, ensuring you receive the exact specifications and build quality required for consistent machine performance.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X300-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 300 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. |
| ×300 | 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.
The 30 mm adjustable stroke allows engineers to precisely dial in the end-stop position on a new assembly line without swapping shims or mechanical hard stops, accelerating the commissioning process.
Quickly adjust the stroke end to accommodate different product sizes or box dimensions on a packaging machine, reducing downtime between production runs.
In high-cycle clamping or pressing applications, the stroke can be incrementally extended over time to compensate for wear on tooling or contact surfaces, maintaining consistent process quality.
Select the SCJ80X300-30S when you need a 300 mm stroke with the ability to fine-tune the end position by up to 30 mm during commissioning or changeovers. If 2513 N of push force at 0.5 MPa is insufficient, stepping up to the 100 mm bore SCJ100 series provides 3927 N. For applications requiring a fixed, non-adjustable stroke, the standard SC80X300 cylinder is a more economical alternative. This model is a direct replacement for another AirTAC SCJ80X300-30S with a magnet and PT ports.
For a 300 mm stroke, evaluate the rod for potential side-loading or buckling. If the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder to protect the rod and seals from premature wear, especially when the stroke is fully extended.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is lower due to the single 25 mm rod, providing 2268 N at 0.5 MPa.
A screw in the rear cap limits the piston's retraction. Turning the screw changes the stroke end position by up to 30 mm, giving you a shorter effective stroke without replacing the cylinder or altering the port connections.
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.