The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X350-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø63mm bore, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X350-10S is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a field-adjustable stroke end via a rear-cap screw. With a 63 mm bore and a 20 mm rod, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a capable mid-range actuator. This model's -10 adjustment range allows operators to fine-tune the stroke end position by up to 10 mm, ideal for commissioning tweaks or taking up minor mechanical wear without replacing the unit. The built-in magnet (S suffix) enables direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
This tie-rod cylinder has a PT1/4 port, an M16x1.5 rod thread, and a 28 mm air cushion at each end for smooth deceleration. The body length A(SCJ) is 197 mm, and the maximum standard stroke for this bore is 1500 mm. It operates on 40 µm filtered air from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa. The standard temperature range with the default TPU seals is -20 to +70 °C.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X350-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 10 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. |
| -10 | 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.
Engineers can use the 10 mm rear adjustment screw to perfectly dial in the stop position during initial machine setup, compensating for minor stack-up tolerances in the assembly without needing shims or custom end stops.
On a packaging line, the stroke end can be quickly re-adjusted when switching between product sizes, ensuring the actuator's push stroke is perfectly matched to a new box dimension without a cylinder swap.
In high-cycle clamping or pressing fixtures, the adjustable stroke can be used to periodically take up slack caused by pad wear or material compression, maintaining consistent clamp force and position over the tool's life.
Select the SCJ63X350-10S when you need a robust 63 mm bore actuator with a 350 mm stroke and the ability to dial in the stroke end precisely. If your application requires more force, stepping up to an 80 mm bore provides 2513 N of push force at 0.5 MPa; for a lighter, more compact solution, a 50 mm bore delivers 982 N. For applications where the stroke length is fixed and never needs adjustment, the standard SC63X350 fixed-stroke cylinder is a direct, more economical alternative. When ordering a replacement, match the 63 mm bore, 350 mm nominal stroke, 10 mm adjust range, PT port thread, basic mounting, and the integrated magnet sensor option. For this 350 mm stroke, be mindful of side loads; if the rod is not guided externally, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 3118 N.
Yes, the SCJ63X350-10S is dimensionally compatible with an SC63 fixed-stroke cylinder of the same bore and mounting, but it adds the rear adjusting screw. Ensure you have clearance for the slightly longer body length A(SCJ) of 197 mm. The sensor magnet is built-in, so you can immediately use CMSG/DMSG sensors for position feedback.
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