The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X350-40S 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. Ø100mm bore, 350mm nominal stroke, PT1/2 ports and adjustable end cushioning.
The SCJ100X350-40S is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 40 mm of field-adjustable stroke-end variation. This model is built around a 100 mm bore, delivering a substantial 3927 N of push force at 0.5 MPa, making it suitable for medium-to-heavy linear applications where the final stop position needs fine-tuning after installation.
Equipped with a built-in magnet (-S suffix), this cylinder is ready for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors for precise end-of-stroke position feedback. The 25 mm piston rod and PT1/2 port ensure robust air flow, while the 29 mm air cushion decelerates the piston smoothly at the stroke end, protecting the end cap from impact.
| Model | Airtac SCJ100 Standard Cylinder SCJ100X350-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 40 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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.
The 40 mm adjustable screw allows technicians to dial in the exact stroke end position during machine commissioning without swapping cylinders or machining external hard stops, saving hours of setup time.
On packaging or sorting lines, operators can quickly adjust the stroke to accommodate different product sizes or box dimensions, enabling rapid format changeovers with minimal downtime.
In long-running clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear in tooling or seals, maintaining consistent contact force and cycle precision over the machine's life.
This 100 mm bore SCJ is a strong mid-range performer; if your application requires more force, stepping up to the 125 mm bore provides 6136 N of push at 0.5 MPa, while a step down to the 80 mm bore reduces push force to 2513 N. For this 350 mm nominal stroke, be mindful of side-loading on the rod—if the load is not perfectly guided, an external guide rail or a switch to a guided cylinder is recommended to prevent rod bending and premature seal wear.
As a direct replacement, match the 100 mm bore, 350 mm nominal stroke, 40 mm adjustable range, PT port thread, and the built-in magnet. This basic mount version uses the cylinder body for support, but foot (LB) or trunnion (TC) mounting accessories from the F-SC100 series can be added if the machine layout changes.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. The maximum push force at 0.9 MPa is 7068 N. The push force is greater than the pull force because the single rod reduces the effective piston area on the return stroke.
Yes, if you need the ability to fine-tune the stroke end. The SCJ100X350-40S matches the mounting and port dimensions of an SC100x350, but its body length A is 245 mm, which is slightly longer to house the adjusting mechanism. Ensure you have the extra space in your machine layout and that the 40 mm adjustment range meets your process needs.
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.