The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X135-75S 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, 135mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X135-75S is an 80 mm bore double-acting, single-rod cylinder that delivers a push force of 2513 N at 0.5 MPa, making it a strong choice for mid-range industrial tasks. Its defining feature is the rear-cap adjusting screw, which provides up to 75 mm of field-adjustable stroke reduction, letting you fine-tune the end position without changing the cylinder body.
This model includes a built-in magnet, allowing for direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. With a 25 mm diameter rod, PT3/8 ports, and a 28 mm air cushion, it handles deceleration effectively at speeds up to 800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X135-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 135 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. |
| ×135 | 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.
Adjust the stroke end on the fly during initial machine setup to perfectly align with mating components without swapping cylinders.
Quickly adapt the stop position for different product sizes on a packaging line by turning the rear screw instead of reprogramming.
Take up mechanical play in a clamping or pressing application over time, maintaining consistent force application at the end of stroke.
Choose the SCJ80X135-75S when you need to dial in a precise stroke end during commissioning or format changes. If 2513 N of push force is insufficient, stepping up to the 100 mm bore provides 3927 N at the same pressure. For applications requiring a fixed, non-adjustable stroke, the standard SC80 series is a simpler alternative. When replacing this unit, match the 80 mm bore, 135 mm nominal stroke, 75 mm adjust range, PT3/8 ports, and the built-in magnet. For strokes over 300 mm, consider an external guide to protect the 25 mm rod from side loads.
Adjustable-stroke checklist
At 0.5 MPa, it provides 2513 N pushing and 2268 N pulling. The force increases to 4523 N at the maximum operating pressure of 0.9 MPa.
Yes, if you need to fine-tune the stroke end. It matches an SC series cylinder of the same 80 mm bore and 135 mm stroke, but adds a 75 mm adjustment range via the rear screw.
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