The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X350-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø63mm bore, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X350-100 is a double-acting, single-rod pneumatic cylinder that delivers a robust 1559 N of push force at 0.5 MPa, scaling up to 2805 N at the maximum operating pressure of 0.9 MPa. Its defining feature is the rear-cap adjusting screw, which provides a full 100 mm of field-adjustable stroke-end reduction, allowing engineers to fine-tune the 350 mm nominal stroke without removing the cylinder from the machine.
This 63 mm bore model uses a 20 mm diameter piston rod with an M16x1.5 thread and PT1/4 ports, incorporating a 28 mm air cushion for smooth deceleration. The tie-rod constructed body has a length A(SCJ) of 197 mm, making it a compact yet powerful solution for applications where the end position must be dialed in precisely during commissioning or changeovers.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X350-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 100 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. |
| ×350 | Nominal (maximum) stroke length in mm. |
| -100 | 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 100 mm adjustment range lets technicians dial in the exact stroke end position during initial machine setup, eliminating the need to fabricate custom external hard stops for a 350 mm stroke actuator.
On packaging or sorting lines, operators can quickly re-set the cylinder's end stop to accommodate different product sizes or pallet patterns without swapping the cylinder, reducing downtime between batches.
In high-cycle clamping or pressing fixtures, the rear screw can be advanced over time to compensate for tooling or pad wear, maintaining consistent clamp force and position without reprogramming the machine controller.
Choose the SCJ63X350-100 when you need a mid-range force actuator with the flexibility to adjust the stroke end by up to 100 mm on the fly. If your application requires more force, stepping up to the 80 mm bore provides a significant jump to 2513 N of push at 0.5 MPa. For fixed-stroke applications where adjustability is not needed, the standard SC63X350 is a direct dimensional match and a more economical choice.
For this 350 mm stroke length, be mindful of side-loading on the 20 mm rod. If the load is not guided externally, rod deflection can cause premature seal wear and binding. In such cases, integrate an external guide rail or switch to a guided cylinder assembly. As a direct replacement, match the 63 mm bore, 350 mm nominal stroke, 100 mm adjust range, PT port thread, and basic mounting style.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder produces 1559 N of push force and 1402 N of pull force. The pull force is lower because the 20 mm piston rod reduces the effective piston area on the retract side. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 3118 N.
Yes, provided the nominal stroke, bore, and port thread match. The SCJ body is slightly longer to house the adjusting mechanism, but the mounting footprint is compatible. Ensure you have clearance for the rear adjusting screw and that the 100 mm adjustment range suits your process requirements.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.