
The AirTAC SCJ32 Standard Cylinder SCJ32X75-50 is a genuine double-acting DOUBLE-ROD air cylinder whose rear rod carries the stroke ADJUSTER: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø32mm bore, 75mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X75-50 brings field-adjustable stroke control to compact pneumatic tasks, letting you fine-tune the end position by up to 50 mm without replacing the cylinder. Its 12 mm diameter piston rod and M10x1.25 knuckle thread handle precise tooling adjustments, while the 21 mm air cushion at each end protects the assembly during high-cycle operation.
The rear adjusting screw sets the stroke end within a 50 mm window, so commissioning engineers can dial in the exact travel needed on the machine.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X75-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 50 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. |
| -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.
Fine-tune the retract or extend stop during machine setup with the 50 mm adjustment screw, eliminating the need to shim or reposition the cylinder body.
Compensate for tooling wear in light press or staking fixtures by gradually extending the stroke end, maintaining consistent part contact without reprogramming.
For fixed-stroke jobs where no field adjustment is needed, the standard SC32X75 is a simpler alternative. To replace this unit, match the 32 mm bore, 75 mm nominal stroke, 50 mm adjust range, PT ports, and basic mounting. If the 75 mm stroke is close to the rod's buckling limit under side load, consider adding an external guide rail.
Adjustable-stroke checklist
The maximum push force at 0.9 MPa is 724 N.
A screw in the rear cap lets you shorten the stroke end by up to 50 mm. It sets the mechanical stop position for the piston, giving you field-adjustable travel without changing the cylinder's nominal 75 mm rating.
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