The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X300-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 300mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X300-30 is an 80 mm bore double-acting single-rod cylinder with a field-adjustable stroke end, letting you fine-tune the piston stop position by up to 30 mm without swapping the unit. It delivers 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa, while the pull force is slightly lower at 2268 N (0.5 MPa) due to the 25 mm piston rod area.
This adjustable-stroke design uses a rear-cap screw to set the stroke end, which is ideal for commissioning trials, format changeovers, or taking up mechanical wear. The body length A is 239 mm, and the standard 21 mm air cushion at each end decelerates the piston smoothly. PT3/8 ports and an M20x1.5 rod thread are standard on this 80 mm bore model.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X300-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 300 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| 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, 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | Nominal (maximum) stroke length in mm. |
| -30 | 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-stop position during machine commissioning without removing the cylinder, saving hours of mechanical adjustment on a 300 mm stroke actuator.
Quickly adjust the stroke end for different product sizes on packaging or material-handling lines, where an 80 mm bore provides the force to move heavier items.
Take up mechanical play or tooling wear over time by advancing the rear screw, maintaining precise positioning without replacing the cylinder.
Choose the SCJ80X300-30 when you need to dial in the stroke end on a 300 mm nominal cylinder. If 2513 N of push force is more than your load requires, the 63 mm bore SCJ63 offers 1559 N at 0.5 MPa; if you need more, the 100 mm bore provides 3927 N. For fixed-stroke applications where adjustment is not needed, the standard SC80X300 is a simpler, lower-cost alternative. When replacing this cylinder, match the 80 mm bore, 300 mm nominal stroke, 30 mm adjust range, PT3/8 ports, and basic mounting. At 300 mm stroke, ensure the rod is guided externally if side loads are present to prevent bending.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 2513 N pushing and 2268 N pulling. At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N. The pull force is lower because the 25 mm rod reduces the piston area on the return stroke.
Yes, the SCJ80X300-30 shares the same 80 mm bore, 300 mm nominal stroke, and PT3/8 ports as the SC80X300. The SCJ body is slightly longer to house the adjusting screw, so check the 239 mm A dimension for clearance. Mounting accessories from the SC series (FA, LB, TC) also fit.
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.