The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-30 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-30 is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly on the machine. Its rear-cap adjusting screw provides up to 30 mm of adjustment, letting you dial in the exact end position during commissioning or format changes without swapping the cylinder. With a 20 mm diameter piston rod and a 28 mm air cushion, it delivers controlled deceleration even at the 30-800 mm/s speed range.
At 0.5 MPa, this 63 mm bore cylinder generates 1559 N of push force and 1402 N on the pull stroke, making it a capable mid-range actuator. The body length A is 197 mm, and the standard stroke of 150 mm is well within the 1500 mm maximum for this bore. It uses a PT1/4 port and an M16x1.5 rod thread, ready for standard pneumatic plumbing and tooling attachment.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 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. |
| ×150 | 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-of-stroke position for a new machine axis without needing to fabricate shims or external hard stops. The 30 mm adjustment range allows engineers to quickly dial in the perfect stopping point.
Adjust the stroke end to accommodate different product sizes on a packaging or sorting line. The rear screw makes mechanical format changes fast and repeatable, minimizing downtime between batches.
Take up mechanical play or compensate for seal wear in a clamping or pressing fixture over time. The adjustable stroke end maintains consistent clamping force and position without replacing the entire actuator.
Choose the SCJ63X150-30 when you need a stroke that can be precisely trimmed on-site. If 1559 N of push force at 0.5 MPa is insufficient, stepping up to an 80 mm bore provides 2513 N. For applications where the stroke is fixed and never needs field changes, the standard SC63X150 fixed-stroke cylinder is a simpler, more cost-effective alternative. A direct replacement must match the 63 mm bore, 150 mm nominal stroke, 30 mm adjust range, PT1/4 port, and basic mounting.
For this 150 mm stroke, side-loading is typically not a primary concern, but if the rod experiences any radial force, an external guide rail or switching to a guided cylinder assembly is recommended to prevent premature rod bearing wear and ensure smooth operation.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it delivers 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
Yes, if you need field adjustability. The SCJ63X150-30 shares the same bore, rod, and porting as an SC63, but the body is slightly longer to house the adjusting screw. Ensure the 30 mm adjustment range suits your application and that you match the port thread (PT) and mounting style.
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