The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-50S is an 80 mm bore double-acting single-rod air cylinder with a field-adjustable stroke end. A rear-cap adjusting screw lets you shorten the piston stroke by up to 50 mm without removing the cylinder, delivering a push force of 2513 N at 0.5 MPa and 4523 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), so CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The 25 mm piston rod, PT3/8 ports, and 28 mm air cushion make it a robust choice for format-change or commissioning tasks where the stroke must be dialled in precisely on the machine.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 50 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. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -50 | 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 end-stop position during machine commissioning without swapping cylinders or machining external hard stops. The 50 mm adjustment range lets technicians fine-tune the stroke on the fly.
Quickly adapt a packaging or sorting line to a new product size. The rear screw adjusts the pusher stroke end in seconds, reducing downtime between production runs.
Take up mechanical wear in a clamping or pressing fixture over time. The adjustable stroke end restores the original tooling position without replacing the cylinder or adding shims.
Choose the SCJ80X500-50S when you need to fine-tune a 500 mm nominal stroke by up to 50 mm on the machine. If the force requirement is lower, stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa; for more force, the 100 mm bore delivers 3927 N. Because the stroke is 500 mm, check side-loading on the fully extended 25 mm rod—an external guide rail or a guided cylinder is recommended if the load is not perfectly axial.
For a direct replacement, match an AirTAC SCJ adjustable-stroke cylinder with 80 mm bore, 500 mm nominal stroke, a 50 mm adjust range, PT3/8 ports, basic mount, and the -S magnet. If you do not need the stroke adjustment, a fixed-stroke SC80X500-S is a simpler alternative.
Adjustable-stroke checklist
At 0.5 MPa air pressure, the push force is 2513 N and the pull force is 2268 N (the rod area reduces the pull force). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N.
A rear-cap adjusting screw sets the stroke end position within a 50 mm range; the nominal 500 mm stroke is the maximum. Pick an SCJ when you need to fine-tune the stroke on the machine for commissioning, format changes, or wear take-up. Choose a fixed-stroke SC cylinder if the stroke length is permanently fixed.
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.