The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X40-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 40mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X40-40S is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a rear-cap adjusting screw that provides a 40 mm field-adjustable stroke range. This allows fine-tuning of the stroke end position without swapping the cylinder, ideal for commissioning and format changeovers. With a 63 mm bore, it delivers 1559 N of push force at 0.5 MPa, making it a robust workhorse for medium-duty automation tasks.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable, non-contact position sensing. The 20 mm rod is threaded M16x1.5, and the cylinder uses PT1/4 ports. It features an adjustable air cushion (28 mm length) for smooth deceleration and a body length A of 197 mm, providing a compact yet powerful actuation solution.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X40-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 40 mm |
| Stroke adjustment | Up to 40 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. |
| ×40 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Perfect for commissioning automated test fixtures where the final push position must be dialed in under live conditions. The 40 mm adjustment screw allows operators to fine-tune the cylinder's end point for precise engagement without mechanical rework.
In clamping or pressing applications, the adjustable stroke can be periodically shortened to compensate for tooling or pad wear over time. This maintains consistent clamping force and cycle time without replacing the cylinder or adding shims.
Ideal for packaging lines running multiple box sizes. The stroke can be quickly adjusted by 40 mm to match a new product width, simplifying changeover for stops, pushers, or diverters and significantly reducing downtime.
Choose the SCJ63X40-40S when you need a 63 mm bore with 1559 N of push force at 0.5 MPa and the ability to precisely dial in the stroke end by up to 40 mm. If your force requirement is lower, stepping down to a 50 mm bore (982 N push) can reduce air consumption and physical size. For a fixed, non-adjustable stroke, the standard SC63 series is a simpler, cost-effective alternative; however, the SCJ's screw adjustment eliminates the need for external hard stops.
For replacement, match this genuine AirTAC SCJ63X40-40S with another SCJ cylinder of identical 63 mm bore, 40 mm nominal stroke, and 40 mm adjust range, ensuring the PT port thread and built-in magnet are specified. The basic mount configuration allows direct integration, or you can add FA, LB, or TC mounting accessories from the SCJ subset for new installations.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this 63 mm bore cylinder provides a push force of 1559 N and a pull force of 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, if you need the 40 mm stroke adjustability. The SCJ63X40-40S has the same 63 mm bore, 20 mm rod, and PT1/4 ports as an SC63, but its body is slightly longer to house the rear adjusting screw. Ensure the nominal 40 mm stroke and the -S magnet option match your sensor requirements for a direct functional replacement.
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.