The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X300-50S 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. Ø32mm bore, 300mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X300-50S is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that allows you to fine-tune the stroke end by up to 50 mm in the field. With a 32 mm bore and 12 mm rod, this model delivers 402 N of push force at 0.5 MPa, making it a precise actuator for light automation tasks where the final stop position must be dialled in during commissioning or after a format change.
This model includes a built-in magnet (-S suffix), so standard CMSG/DMSG/EMSG reed and solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length (A dimension) is 182 mm, and the adjustable air cushion provides smooth deceleration over a 21 mm cushion length.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X300-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 300 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. |
| ×300 | 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 stroke end during machine commissioning without cutting brackets or adding external hard stops, saving hours of mechanical adjustment.
Fine-tune the retracted position of a product stop on a conveyor line to handle different package sizes, with sensor confirmation via the built-in magnet.
Adjust the stroke end to compensate for tooling or pad wear over time, maintaining consistent contact pressure without replacing the cylinder.
Choose the SCJ32X300-50S when you need a 300 mm stroke with the ability to shorten the end position by up to 50 mm without swapping the cylinder. For higher force requirements, stepping up to a 40 mm bore provides 628 N of push force at the same 0.5 MPa pressure. If your application does not require field adjustability, the fixed-stroke SC32X300-S offers the same bore and stroke in a simpler package. For strokes of 300 mm and above, ensure the rod is not subjected to high side loads; use an external guide rail or consider a guided cylinder if the load is not constrained linearly.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The maximum push force at the 0.9 MPa operating limit is 724 N. The pull force is lower because the 12 mm rod reduces the effective piston area on the return stroke.
A rear-cap screw sets the stroke end position within a 50 mm range, so the effective stroke is adjustable from 250 mm to 300 mm. It is a direct dimensional replacement for an SC32X300-S, provided the 50 mm adjustment screw protrusion is accommodated in your design.
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