The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X75-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø80mm bore, 75mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X75-75S is an 80 mm bore double-acting single-rod cylinder with a 75 mm maximum nominal stroke and a full 75 mm of field-adjustable range, letting you dial the stroke end anywhere from 0 to 75 mm without swapping the unit. Its 25 mm rod generates 2513 N of push force at 0.5 MPa, while the PT3/8 ports and 28 mm air cushion provide smooth deceleration across the 30-800 mm/s speed band.
A built-in magnet (the -S suffix) allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The body length A(SCJ) is 239 mm, making it slightly longer than a fixed-stroke SC of the same bore. This genuine AirTAC adjustable-stroke cylinder is ideal where commissioning trials or frequent format changes demand quick stroke-end tuning.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X75-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 75 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. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -75 | 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 75 mm adjustment screw lets integrators fine-tune the stroke end-stop on a new machine in minutes, eliminating the need to stock multiple fixed-stroke cylinders during debug.
On a packaging line switching between box heights, the operator can quickly dial the stroke to match the new product without mechanical rework, reducing downtime.
In clamping or pressing fixtures, the adjustable stroke-end can be periodically advanced to take up for pad or tooling wear, maintaining consistent contact force.
Step up to the 100 mm bore for 3927 N push at 0.5 MPa if the 2513 N from this 80 mm unit is borderline; step down to 63 mm (1559 N) when space and weight matter more than force. Choose a fixed-stroke SC when the stroke is permanently set, or a guided cylinder if the rod must handle off-axis loads. For a like-for-like replacement, match an AirTAC SCJ with 80 mm bore, 75 mm nominal stroke, a -75 adjust range, PT3/8 ports, basic mounting, and the -S magnet option.
Adjustable-stroke checklist
At 0.5 MPa it delivers 2513 N push and 2268 N pull (pull is lower because of the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N.
A rear-cap screw sets the physical stroke-end position within a 0-75 mm range. It is a mechanical stop for the piston, not a locking device—the cylinder will drift if air pressure is lost. For load holding without pressure, add an external rod brake or pilot-operated check valve.
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