The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-50STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø100mm bore, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
The SCJ100X300-50 is a double-acting, single-rod pneumatic cylinder that puts a 50 mm field-adjustable stroke range at your fingertips. With a 100 mm bore, it delivers a substantial 3927 N of push force at 0.5 MPa and up to 7068 N at 0.9 MPa, making it a workhorse for heavy clamping, pressing, and positioning tasks. The rear-cap adjusting screw lets you fine-tune the stroke end position without dismounting the cylinder, which is invaluable during commissioning or for adapting to process changes.
This model is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion mount (TC) that includes the TCM1 bracket, allowing the cylinder to pivot smoothly under load. The 25 mm diameter rod and PT1/2 ports handle high flow, while the 29 mm air cushion at each end decelerates the piston quietly. Its body length A(SCJ) is 245 mm, providing a robust platform for demanding industrial environments.
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-50STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 mm |
| Stroke adjustment | Up to 50 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. |
| ×300 | Nominal (maximum) stroke length in mm. |
| -50 | 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.
Fine-tune the end position of a heavy material stop on a conveyor line during initial setup. The 50 mm adjustment range allows engineers to dial in the exact stopping point without fabricating new brackets.
Quickly adapt a packaging machine's pusher stroke for different box sizes. The rear screw adjustment eliminates the need to swap cylinders or add external hard stops, minimizing downtime between production runs.
In a high-cycle pressing operation, use the adjustable stroke to compensate for tooling wear over time. The 3927 N push force at 0.5 MPa ensures consistent pressure is maintained as the end position is incrementally extended.
Choose the SCJ100X300-50 when you need a powerful 100 mm bore with the flexibility to adjust the stroke end by up to 50 mm on the machine. If your force requirement is lower, stepping down to the 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and physical size. For applications requiring a fixed, unchangeable stroke, the standard SC series is a simpler and more cost-effective alternative. As a direct replacement, match the 100 mm bore, 300 mm nominal stroke, 50 mm adjust range, PT port thread, TC centre trunnion mount, and the magnet option (-S) to ensure identical fit and function.
Given the 300 mm stroke, be mindful of side loads on the rod. For applications with significant lateral force, use an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear, ensuring long service life.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, the cylinder provides 3927 N of push force and 3681 N of pull force. The maximum push force at 0.9 MPa is 7068 N. The pull force is lower due to the area of the 25 mm piston rod.
Yes, if you need a 100 mm bore, 300 mm maximum stroke, and the ability to adjust the stroke end by up to 50 mm. Ensure your mounting matches the TC centre trunnion, the port thread is PT, and you need the -S magnet for sensors. The adjustable screw makes the body slightly longer than a fixed-stroke SC, so check the 245 mm body length A(SCJ) for clearance.
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.