The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-30TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø63mm bore, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X75-30TC is a double-acting, single-rod pneumatic cylinder that puts fine stroke control at your fingertips. Its rear-cap adjusting screw provides a 30 mm field-adjustable range, letting you dial in the exact stroke end position without swapping the cylinder or adding external hard stops. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need both power and precision.
This model is configured with a TC centre trunnion mount (supplied with the TCM1 bracket, part code F-SC63TC), ideal for applications where the cylinder needs to pivot. The standard PT ports and TPU seals suit filtered-air systems from -20 to +70 °C. The body length A is 197 mm, and the adjustable air cushion decelerates the piston smoothly at the end of its 75 mm nominal stroke.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | 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.
Fine-tune the end position during machine commissioning without fabricating custom stops. The 30 mm adjustment range on the SCJ63X75-30TC lets technicians quickly compensate for variations in tooling or mounting brackets.
Quickly adapt a diverter or stop gate for different product sizes on a packaging line. The rear screw adjusts the stroke end in seconds, minimizing downtime between production runs.
In clamping or pressing operations, the adjustable stroke can be used to take up mechanical wear on pads or tooling over time, maintaining consistent contact without reprogramming the machine controller.
Choose the SCJ63X75-30TC when your application requires a mid-range force output with the ability to fine-tune the stroke on the machine. If you need more force, stepping up to the 80 mm bore provides 2513 N of push at 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, the standard SC63X75 fixed-stroke cylinder is a more economical choice. This adjustable-stroke unit is a direct replacement only for another AirTAC SCJ63 cylinder with a 75 mm nominal stroke and a 30 mm adjustment range.
Adjustable-stroke checklist
A screw in the rear cap limits how far the piston can retract, effectively shortening the stroke end. You can adjust the stroke within a 30 mm range from the nominal 75 mm maximum. It adjusts the end position only, not the cylinder's speed or force.
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. The maximum push force at the 0.9 MPa operating limit is 2805 N. The pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
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