The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X50-30S 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, 50mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The AirTAC SCJ80X50-30S is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end adjustment right at your fingertips. With an 80 mm bore generating 2513 N of push force at 0.5 MPa and a 25 mm piston rod, it's built for medium-to-heavy automation tasks. The key differentiator is the rear-cap adjusting screw, which lets you shorten the effective stroke by up to 30 mm without dismounting the cylinder—ideal for dialing in a precise end position during commissioning or changeovers.
This model includes a built-in magnet, allowing you to clamp CMSG, DMSG, or EMSG sensors directly onto the tie-rod barrel for reliable, non-contact position sensing. The body length A(SCJ) is 239 mm, and it features an adjustable air cushion to decelerate the piston smoothly at stroke end. Operating on filtered air from 0.15 to 1.0 MPa, this genuine AirTAC cylinder provides a robust, field-tunable motion solution.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X50-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 50 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. |
| ×50 | 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.
Perfect for clamping or pressing fixtures where the final tooling position must be dialed in precisely on the machine, using the 30 mm adjustment screw to eliminate mechanical shims.
Ideal for diverters or stops on packaging lines that handle multiple product sizes. Operators can quickly reset the cylinder's stroke end to match a new box or tray dimension without tools.
In high-cycle assembly operations, the adjustable stroke can be periodically tweaked to take up slack from pad or gripper wear, maintaining consistent contact force and cycle precision over time.
Choose this 80 mm bore when your application needs a push force around 2513 N at standard plant pressure; stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa, while moving up to a 100 mm bore increases it to 3927 N. The SCJ is the right pick over a fixed-stroke SC when you anticipate needing to fine-tune the stroke end position after installation, such as for wear compensation or format adjustments. For a direct replacement, match an SCJ80X50-30S with the same bore, 50 mm nominal stroke, 30 mm adjust range, PT port thread, and the built-in magnet for sensor compatibility.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is slightly lower at 2268 N at 0.5 MPa due to the area taken up by the 25 mm piston rod. These values are identical to a fixed-stroke SC cylinder of the same bore.
The rear adjusting screw sets the stroke end position, allowing you to shorten the 50 mm nominal stroke by up to 30 mm. It is a mechanical stop for the piston, not a locking device. The cylinder will drift if air pressure is lost; an external rod lock or pilot-operated check valve is required for load holding.
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.