The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-30SH 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, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X75-30SH is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides a 30 mm field-adjustable stroke range. This lets you fine-tune the stroke end position without swapping the cylinder. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a strong mid-range actuator.
This model is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and high-temperature Viton seals (-H), extending the operating range from 0 to +150 °C. The standard PT1/4 port and 28 mm air cushion ensure reliable, decelerated end-of-stroke performance in demanding environments.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-30SH |
|---|---|
| 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.
The 30 mm rear adjustment screw allows technicians to quickly dial in the exact stroke end during machine commissioning without needing to re-plumb or swap out the cylinder.
With Viton seals rated to 150 °C, this cylinder is suited for clamping or pressing applications near ovens or heated platens where standard seals would fail.
In high-cycle applications, the adjustable stroke can be used to compensate for mechanical wear in tooling or grippers, maintaining precise positioning over the cylinder's service life.
Choose the SCJ63 when you need more force than the 40 mm bore (628 N push) but less than the 80 mm bore (2513 N push). The 30 mm adjustable stroke is ideal for commissioning and fine-tuning end positions. For a direct replacement, match the 63 mm bore, 75 mm nominal stroke, 30 mm adjust range, PT ports, and the -S magnet and -H Viton seal options.
For strokes of 300 mm or more, consider the rod's buckling load. If the application involves significant side forces, use an external guide rail or switch to a guided cylinder to protect the rod and bearings from premature wear.
Adjustable-stroke checklist
At 0.5 MPa, 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 theoretical force at 1.0 MPa is 318 kgf.
No. The rear adjusting screw only sets the stroke end position. The cylinder will not hold a load if air pressure is lost or the valve is centered. For load holding, you must add a pilot-operated check valve or an external mechanical brake.
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.