The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X175-30SH 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, 175mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X175-30SH is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw, providing a 30 mm field-adjustable stroke range on a 175 mm nominal body. At 0.5 MPa, it delivers 1559 N of push force and 1402 N on the pull stroke, driven by a 20 mm piston rod. The cylinder's integral air cushion (28 mm length) ensures smooth deceleration, and the PT1/4 port supplies the working air.
This model is built for high-temperature environments, fitted with Viton (FKM) seals that extend the operating range from 0 to +150 °C. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for end-of-stroke detection, making it a robust choice for hot, demanding automation tasks where stroke length needs fine-tuning without cylinder replacement.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X175-30SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 175 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. |
| ×175 | 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 platen stroke end-stop on a heated laminating press during setup. The 30 mm adjustment range and Viton seals handle the 0-150°C environment, while the magnet confirms the press is fully closed.
Adjust the stroke of a part diverter gate inside a curing oven. The adjustable screw lets technicians compensate for thermal expansion or gate wear without stopping the line, and the sensor confirms gate position.
Quickly reset the push stroke for different container heights on a hot-fill beverage line. The 30 mm range allows a single cylinder to handle multiple SKUs, reducing changeover time and spare parts inventory.
Choose the SCJ63 bore for applications needing around 1559 N of push force at standard shop air. If your load requires a step up in power, the SCJ80 bore provides 2513 N of push at the same 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC63 series is a direct alternative. This unit's 175 mm stroke is well within the 1500 mm maximum for the 63 bore, ensuring stable rod support. To replace this cylinder, match the 63 mm bore, 175 mm nominal stroke, 30 mm adjust range, PT port thread, Viton seals, and the integrated magnet sensor option.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder generates 1559 N of pushing force and 1402 N of pulling force. The maximum push force at 0.9 MPa is 2805 N. The pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
The rear adjusting screw sets the physical end-stop for the piston, shortening the stroke by up to 30 mm from the 175 mm nominal maximum. This screw only limits stroke length; it does not lock or hold the piston in place. If the load must be held without air pressure, an external rod brake or pilot-operated check valve is required.
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