The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-20STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø63mm bore, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCJ63X200-20STC is a double-acting, single-rod pneumatic cylinder engineered for applications demanding precise, field-adjustable stroke end positioning. Its rear-cap adjusting screw provides a 20 mm fine-tuning range, allowing operators to dial in the exact stroke end without removing the cylinder or adding external hard stops. With a 63 mm bore, it delivers a substantial 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a robust workhorse for medium-duty automation tasks.
This model is factory-equipped with a built-in magnet (S) for direct mounting of CMSG/DMSG/EMSG sensors, enabling reliable end-of-stroke position sensing. The TC centre trunnion mount allows the cylinder body to pivot, accommodating swinging loads and angular motion. Supplied with the TCM1 bracket, it uses the F-SC63TC mounting kit. The standard TPU seals and PT ports ensure compatibility with common pneumatic setups, operating smoothly at speeds from 30 to 800 mm/s.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-20STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 20 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. |
| ×200 | Nominal (maximum) stroke length in mm. |
| -20 | 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 20 mm adjustable stroke allows technicians to fine-tune the actuator's end position during machine commissioning, perfectly aligning tooling or stops without needing to shim or reposition the entire cylinder.
On packaging or sorting lines, quickly adjust the cylinder's stroke end to accommodate different product sizes or formats. The centre trunnion mount is ideal for the pivoting arms often found in diverter gates.
In a clamping fixture, the adjustable stroke screw can be used to precisely set the final clamp position, compensating for variations in part thickness or taking up wear on contact surfaces over time.
Select the SCJ63X200-20STC when your application requires a 200 mm nominal stroke with the ability to reduce the stroke end by up to 20 mm for commissioning or format changes. If you need more force, step up to the 80 mm bore, which provides 2513 N of push force at the same pressure. For applications where the stroke length is fixed and will never need field adjustment, the standard SC63X200 fixed-stroke cylinder is a simpler, more cost-effective alternative. This SCJ model is a direct replacement for another AirTAC SCJ63X200-20 cylinder with a TC mount, magnet, and PT ports. For this 200 mm stroke, ensure the rod is guided externally if significant side loads are present to prevent bending.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N. The adjustable stroke screw does not change the cylinder's force output.
Yes, this is a direct, form-fit-function replacement for any AirTAC SCJ63X200-20 cylinder that uses a centre trunnion (TC) mount, a magnetic piston (S), and PT ports. Verify your existing mounting bracket matches the TCM1 style supplied with this model.
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