The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X350-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø50mm bore, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X350-100 delivers a nominal 350 mm stroke with a 100 mm rear adjusting screw, letting you dial the exact end position on the machine during commissioning or format changes. At 0.5 MPa it provides 982 N of push force and 825 N on the pull stroke, scaling to 1767 N push at the 0.9 MPa maximum operating pressure.
This 50 mm bore tie-rod cylinder uses a 20 mm piston rod, PT1/4 ports, and an M16x1.5 rod thread for straightforward mounting. Its adjustable air cushion decelerates the piston smoothly, and the body length A(SCJ) is 194 mm, slightly longer than a fixed-stroke SC of the same bore to house the stroke-setting mechanism.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X350-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 100 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, 21 mm |
| Max stroke | Up to 1200 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×350 | Nominal (maximum) stroke length in mm. |
| -100 | 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.
During machine setup, the 100 mm adjust range lets technicians dial in the perfect stroke end for a pick-and-place arm without iterative cylinder swaps, cutting commissioning time.
On a packaging line switching between box sizes, the rear screw quickly resets the pusher stroke to match the new carton length, restoring line rate with minimal downtime.
In a clamping fixture where tooling pads compress over time, the adjustable stroke end can be extended slightly to take up the wear, maintaining consistent clamp force without replacing the cylinder.
Step up to a 63 mm bore (1559 N push at 0.5 MPa) if your application needs more force, or down to a 40 mm bore (628 N push) for a lighter, faster actuator. If the stroke never needs field adjustment, a fixed-stroke SC50X350 simplifies the bill of materials. For a direct replacement, match an SCJ50X350-100 with PT ports and basic mounting—no magnet is fitted on this unit. At 350 mm stroke, verify the rod is adequately supported against side loads; an external guide rail or a guided cylinder is recommended if the load is not perfectly axial.
Adjustable-stroke checklist
At 0.5 MPa, push force is 982 N and pull force is 825 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N. The pull force is lower because the piston rod reduces the effective area on the return stroke.
A screw in the rear cap sets the stroke end position. You can shorten the effective stroke by up to 100 mm from the nominal 350 mm maximum. It adjusts the stopping point only—it does not change the cylinder's force, speed, or bore size.
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.