The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-50 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. Ø80mm bore, 175mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X175-50 is an 80 mm bore double-acting single-rod cylinder with a rear-cap adjusting screw that provides a 50 mm field-adjustable stroke range, letting you dial in the exact end position without removing the cylinder. With a 25 mm piston rod, PT3/8 ports, and a 28 mm air cushion, it delivers a robust 2513 N push force at 0.5 MPa, scaling up to 4523 N at 0.9 MPa.
This tie-rod cylinder has a body length A(SCJ) of 239 mm and operates on 40 µm filtered air from 0.15 to 1.0 MPa. The 175 mm nominal stroke is well within the 1500 mm maximum for this bore, making it a standard-stroke unit. The screw only sets the stroke end—it does not adjust force or speed—and the air cushion decelerates the load near end of travel.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 50 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. |
| ×175 | 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.
Dial in the exact stroke end position on a new packaging machine without removing the cylinder, saving hours of mechanical adjustment during setup.
Quickly adjust the pusher stroke on a conveyor diverter when switching between product sizes, using the 50 mm screw range to set the new stop position.
Take up mechanical wear in a clamping fixture by advancing the stroke end screw, maintaining consistent clamp force without replacing the cylinder or adding shims.
Choose the SCJ80X175-50 when you need to fine-tune the stroke end by up to 50 mm during commissioning or format changes. If 2513 N push at 0.5 MPa is insufficient, stepping up to the 100 mm bore (SCJ100) provides 3927 N push; if the force is more than needed, the 63 mm bore (SCJ63) delivers 1559 N push and a smaller footprint. For applications that do not require field adjustability, the fixed-stroke SC80 series is a simpler alternative. When replacing, match the 80 mm bore, 175 mm nominal stroke, 50 mm adjust range, PT3/8 port thread, and basic mounting. For strokes of 300 mm or longer, consider an external guide or a guided cylinder to manage side loads and prevent rod bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (single rod). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N. The theoretical maximum at 1.0 MPa is 513 kgf.
Only if the application requires the adjustable stroke feature. The SCJ80X175-50 has a rear adjusting screw that adds length compared to a fixed-stroke SC80. You must match the 80 mm bore, PT3/8 ports, and mounting style. The SCJ uses the same mounting accessories (FA, LB, TC) as the SC series.
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.