The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 175mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X175-40S is an 80 mm bore double-acting, single-rod cylinder with a field-adjustable stroke end. A rear-cap screw lets you shorten the effective stroke by up to 40 mm without removing the cylinder, making it practical for commissioning fine-tuning and format changeovers on packaging or assembly lines. Its 25 mm diameter rod and PT3/8 ports deliver a push force of 2513 N at 0.5 MPa.
This model includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG solid-state sensors clamp directly onto the tie-rod barrel for non-contact position sensing. The standard TPU seal operates from -20 to +70 °C, and the 28 mm air cushion decelerates the piston smoothly. The body length A(SCJ) is 239 mm, slightly longer than a fixed-stroke SC of the same bore due to the adjusting mechanism.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 40 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. |
| -40 | 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 clamping or pressing station during initial machine build-out without swapping cylinders or machining hard stops.
Quickly adjust a product stop or diverter gate on a conveyor line when switching between different box or pallet sizes, minimizing downtime.
Periodically tweak the stroke end to take up mechanical play or seal wear in a long-running fixture, maintaining consistent part contact.
Choose this 80 mm bore when your application needs roughly 2513 N of push force at standard plant air. If you need more force, stepping up to a 100 mm bore provides 3927 N push at 0.5 MPa; for a lighter, more compact solution, the 63 mm bore delivers 1559 N. The SCJ is the right choice when you need to dial in the stroke end position on the machine—during initial setup, after tooling wear, or when running different product heights. If the stroke is fixed and never needs adjustment, a standard SC cylinder is simpler and slightly shorter. For a direct replacement, match an SCJ with an 80 mm bore, 175 mm nominal stroke, 40 mm adjust range, PT ports, and the -S magnet option. At 175 mm of stroke, rod bending from side loads is generally manageable, but for any off-axis force, add an external guide rail or switch to a guided cylinder.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (the pull force is lower because the 25 mm rod reduces the piston area on the return side). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N.
Yes, provided the bore (80 mm), port thread (PT3/8), and mounting style match. The SCJ body is slightly longer (239 mm A-length) to house the rear adjusting screw. Ensure you have clearance for the extra length and that your sensor setup is compatible with the -S magnet option.
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.