The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-100S 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. Ø80mm bore, 175mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X175-100S is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a nominal stroke of 175 mm and a substantial 100 mm adjustment range via the rear-cap screw. This model delivers a push force of 2513 N at 0.5 MPa and is built with a 25 mm diameter piston rod and PT3/8 ports, making it a robust choice for applications where the stroke length must be fine-tuned during commissioning or product changeovers.
Equipped with a built-in magnet (-S suffix), this cylinder allows for direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for precise, non-contact end-of-stroke detection. The body length A(SCJ) is 239 mm, and the unit operates smoothly within a speed range of 30-800 mm/s, cushioned by an adjustable pneumatic end-cushion system.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 100 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. |
| -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.
Quickly adjust the end stop on packaging or filling machines to accommodate different box or bottle sizes without swapping out the cylinder, reducing downtime between production runs.
In pressing or clamping operations, the 100 mm screw adjustment can be used to take up mechanical wear on tooling or seals over time, maintaining consistent clamping force without reprogramming.
During machine commissioning, the adjustable stroke allows engineers to empirically find the optimal actuator travel for a new process, then lock it in place once the ideal 175 mm or shorter stroke is determined.
Select the SCJ80X175-100S when you need to dial in the end position of an 80 mm bore actuator on the fly, with up to 100 mm of screw-driven adjustment. If the force requirement is lower, stepping down to the 63 mm bore provides 1559 N of push force at 0.5 MPa; for heavier loads, the 100 mm bore delivers 3927 N. This adjustable-stroke model is ideal for iterative machine setup, whereas a fixed-stroke SC80 cylinder is the better choice once the exact stroke is locked in and repeatability is the only concern.
For direct replacement, match an SCJ cylinder with an 80 mm bore, a nominal stroke of 175 mm, a -100 adjust range, PT3/8 ports, and a built-in magnet. If the cylinder is mounted horizontally with a stroke of 175 mm, consider an external guide rail or a guided cylinder to counteract potential rod bending from side loads.
Adjustable-stroke checklist
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder generates a push force of 2513 N. The pull force on the retract stroke is 2268 N, as the 25 mm piston rod reduces the effective piston area.
You can, provided the mounting and porting align. The SCJ80X175-100S has a nominal 175 mm stroke with a rear adjusting screw that can shorten it by up to 100 mm. It is a direct dimensional replacement for another AirTAC SCJ80X175-100S, but a fixed-stroke SC80 cylinder lacks the rear screw mechanism and has a shorter overall body length.
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