The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X350-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø80mm bore, 350mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X350-75 is an 80 mm bore double-acting single-rod cylinder with a rear adjusting screw that provides up to 75 mm of field-adjustable stroke-end reduction. At 0.5 MPa it delivers 2513 N push and 2268 N pull, while at the maximum operating pressure of 0.9 MPa the push force reaches 4523 N, suiting it for mid-range clamping, pressing, and positioning tasks where the final stroke length must be dialled in on the machine.
The 25 mm diameter piston rod and PT3/8 ports ensure robust flow and mechanical strength. The integral 28 mm air cushion decelerates the piston smoothly at stroke end. The body length A(SCJ) is 239 mm, making it slightly longer than the fixed-stroke SC of the same bore due to the rear adjustment mechanism. This cylinder is a genuine AirTAC product, built for reliable service in filtered-air systems.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X350-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 75 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. |
| ×350 | Nominal (maximum) stroke length in mm. |
| -75 | 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 commissioning, the 75 mm adjust range lets technicians fine-tune the end position for precise part alignment without re-machining brackets or swapping cylinders.
On packaging or assembly lines, operators can quickly adjust the stroke to accommodate different product sizes or pallet widths, reducing downtime between batches.
In long-running clamping fixtures, the adjustable stroke end can be gradually extended to compensate for pad or tooling wear, maintaining consistent clamping force over time.
Choose the SCJ80X350-75 when you need to fine-tune the stroke end within a 75 mm window without swapping cylinders or adding external hard stops. If the force is too low, stepping up to the 100 mm bore provides 3927 N push at 0.5 MPa; if it is too high, the 63 mm bore offers 1559 N. Because the nominal stroke is 350 mm, be mindful of side-loading on the extended rod—an external guide or a guided cylinder should be added if the load is not perfectly axial. For a direct replacement, match the 80 mm bore, 350 mm nominal stroke, 75 mm adjust range, PT ports, and basic mounting. If the application does not need stroke adjustability, the fixed-stroke SC80X350 is a simpler alternative.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The maximum push force at the 0.9 MPa operating limit is 4523 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
Yes, if the old cylinder matches the 80 mm bore, 350 mm nominal stroke, 75 mm adjustable range, PT3/8 ports, and basic mounting style. Always verify the rod diameter (25 mm) and overall body length (239 mm A dimension) against your machine's envelope to ensure a drop-in 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.