
The AirTAC SCJ32 Standard Cylinder SCJ32X75-30 is a genuine double-acting DOUBLE-ROD air cylinder whose rear rod carries the stroke ADJUSTER: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø32mm bore, 75mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X75-30 is a double-acting, double-rod pneumatic cylinder that puts precise stroke-end adjustment at your fingertips. With a 30 mm rear-screw range, you can dial in the exact stop position for a 75 mm nominal stroke without swapping the cylinder or adding external hard stops.
At the heart of this model is a 32 mm bore with a 12 mm rod and PT1/8 pneumatic ports. The tie-rod construction keeps it serviceable, while the 21 mm air cushion at each end decelerates the piston quietly. The body length is 182 mm, and it handles strokes up to 1000 mm as standard, so this 75 mm unit has plenty of headroom in its design envelope.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X75-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (double 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 adjuster on the rear rod sets the stroke end position. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 346 N | 346 N |
| 0.7 MPa | 484 N | — |
| Max (@1.0 MPa) | 70 kgf | |
SCJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SC push of the same bore. 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. |
| ×75 | 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.
During machine bring-up, the 30 mm adjustment screw lets technicians quickly fine-tune the end-stop position for grippers, pushers, or ejectors without iterative disassembly, slashing setup time.
On a packaging line, a diverter gate's stop position can drift as parts wear. The SCJ32X75-30 allows operators to easily re-establish the precise gate position in seconds, extending service intervals.
For a small product labeler handling different bottle heights, the adjustable stroke lets a single cylinder stroke be quickly reset to match the new format, eliminating the need for multiple fixed-stroke cylinders.
For applications where the stroke length is fixed and will never change, the standard SC32 fixed-stroke cylinder is a simpler, more cost-effective alternative. This SCJ32X75-30 is a direct replacement for any AirTAC SCJ32 with a 75 mm nominal stroke, a 30 mm adjustment range, PT1/8 ports, and basic mounting.
Adjustable-stroke checklist
A screw in the rear cap lets you shorten the stroke end by up to 30 mm. The 75 mm is the maximum nominal stroke.
The SCJ32 includes a rear adjusting screw for variable stroke-end positioning, making it ideal for applications needing fine-tuning. The SC32 is a fixed-stroke cylinder. Both share the same 32 mm bore, 12 mm rod, and force characteristics, but the SCJ's body is slightly longer to house the adjustment mechanism.
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