The AirTAC Airtac SCJ Adjustable-Stroke Cylinders SCJ32X125-50G 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. Ø32mm bore, 125mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The AirTAC SCJ32X125-50G is a double-acting, single-rod adjustable-stroke cylinder in the compact bore 32 class, with G1/8 BSPP parallel ports that seal on a bonded face washer. A rear-cap stroke-end screw lets you shorten the stroke by up to 50 mm from the 125 mm nominal, so commissioning tweaks and format changes are done with a spanner, not a cylinder swap. At 0.5 MPa it delivers about 402 N push (345 N pull on the 12 mm rod), which suits light-duty tooling and small fixtures. This tie-rod body carries the same 21 mm adjustable end cushions as the standard bore 32 SCJ, but is supplied with the made-to-order G-thread variant instead of the default PT ports, and the body is slightly longer than the fixed-stroke SC of the same bore (A = 182 mm on the base version). Genuine AirTAC build throughout; add -S if you need CMSG/DMSG sensor detection.
| Model | Airtac SCJ Adjustable-Stroke Cylinders SCJ32X125-50G |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1000 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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.
On a small carton-sealer cross-fold station, the 50 mm adjust range lets the operator trim the flap-fold travel in millimetres after a box-size change, with 402 N push at 0.5 MPa enough for light board.
In a PCB test fixture, contact pads wear back over months; screwing in the rear adjuster restores pad pressure without dismounting the cylinder from its FA foot mount.
For low-force staking of plastic clips during process trials, engineers dial the stroke end in on the fly and lock it once the 563 N at 0.7 MPa push class is confirmed for the part.
Bore 32 is the smallest SCJ bore, so the only step available is up: if 402 N at 0.5 MPa is marginal for your load, take the bore 40 SCJ, which gives 628 N push at 0.5 MPa. If the stroke end never needs changing on the machine, a fixed-stroke SC of the same bore is the simpler, shorter-body choice; add an external guide for off-axis loads. On this G variant, first confirm your fittings and manifold are BSPP parallel-thread: G ports seal on a bonded washer rather than the thread flanks, and this thread is common on EU and Asia OEM lines - if your plant plumbing is North-American NPT, order the T version instead. For a like-for-like replacement, match bore, nominal stroke, adjust range (-50), G1/8 port thread, SCJ mounting accessory (Basic, FA, LB, TC or TCM1 only) and the -S magnet flag. Replacement is limited to matching another AirTAC SCJ of the same spec - this is not an ISO 15552 interchangeable cylinder.
Adjustable-stroke checklist
Being a single-rod double-acting cylinder, push exceeds pull: about 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at the 0.9 MPa maximum operating pressure, and a theoretical 82 kgf at 1.0 MPa. Operating window is 0.15-1.0 MPa with filtered air; the 50 mm adjust screw sets the stroke end only and does not change force.
Choose the SCJ32X125-50G when your machine already runs G1/8 BSPP fittings on a bonded-washer sealing face - typical of EU and Asia OEM manifolds - and the stroke end needs field adjustment. If ports are NPT, order the T suffix; if the stroke never changes, a fixed-stroke SC of the same bore is cheaper and shorter. Match bore, 125 mm stroke, -50 adjust, port thread, SCJ mounting (Basic/FA/LB/TC/TCM1) and -S magnet exactly for a drop-in replacement.
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.