The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-50SH 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. Ø63mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCJ63X150-50SH is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke. A rear-cap adjusting screw provides up to 50 mm of stroke-end reduction, enabling precise fine-tuning during commissioning or format changes without replacing the cylinder. This model features a 63 mm bore, a 20 mm piston rod, and delivers a push force of 1559 N at 0.5 MPa (2805 N at 0.9 MPa).
This specific unit is configured with a built-in magnet (suffix S) for direct mounting of CMSG/DMSG/EMSG sensors, and high-temperature Viton (FKM) seals (suffix H), extending the operating temperature range from 0 to +150 °C. The port thread is standard PT 1/4, and the integral cushion length is 28 mm. Its body length A(SCJ) is 197 mm, making it a compact solution for hot-environment applications requiring sensor feedback and stroke adjustability.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-50SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 50 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. |
| ×150 | 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.
In industrial ovens or foundries, the Viton seals withstand 150 °C while the 50 mm adjustment screw allows operators to dial in the perfect end-stop for a material handling pusher without opening the guarded area.
The built-in magnet enables precise mid-stroke or end-of-stroke sensing. Use it in a high-temperature clamping fixture where the 2805 N force at 0.9 MPa is needed, and the stroke end is fine-tuned to accommodate different workpiece thicknesses.
On a high-cycle press, mechanical wear can alter the shut-height. The 50 mm adjustable stroke on this SCJ63X150-50SH allows maintenance teams to easily compensate for wear by adjusting the screw, restoring the precise 150 mm maximum stroke action.
Choose the SCJ63X150-50SH when you need a robust 63 mm bore cylinder with a 150 mm nominal stroke that can be precisely shortened by up to 50 mm on the machine. If your force requirement is lower, stepping down to a 50 mm bore (982 N push at 0.5 MPa) saves space and air consumption; for higher force, the 80 mm bore provides 2513 N. This adjustable-stroke unit is ideal where end-stop positions need regular tweaking, but if the stroke is fixed, a standard SC63X150 is a more economical choice. For strokes of 300 mm or more, always assess side-loading on the 20 mm rod and consider an external guide or a guided cylinder to prevent rod bending. As a direct replacement, match the bore, nominal stroke, 50 mm adjust range, PT port thread, and the -S magnet and -H Viton seal options exactly.
Adjustable-stroke checklist
This is a single-rod cylinder, so push and pull forces differ. At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 318 kgf. The adjustable stroke screw does not change these force values.
A standard SC63X150 cylinder can provide the same bore and stroke but lacks the 50 mm rear adjusting screw and the Viton seals. To maintain the same functionality in a replacement, you must use another SCJ63X150-50SH with the -S magnet and -H Viton seal options to ensure compatibility with your high-temperature environment and magnetic sensors.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.