The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-40S 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, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X60-40S is an 80 mm bore double-acting, single-rod cylinder with a field-adjustable stroke, delivering a robust 2513 N push force at 0.5 MPa. Its defining feature is a rear-cap adjusting screw that provides a 40 mm range to fine-tune the stroke end, making it ideal for commissioning and process changeovers without swapping the cylinder. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
This tie-rod cylinder uses a 25 mm diameter piston rod and PT3/8 ports, with an adjustable air cushion (28 mm length) to decelerate the piston smoothly. The body length A(SCJ) is 239 mm, accommodating the rear adjustment mechanism. Operating pressure spans 0.15–1.0 MPa, with a proof pressure of 1.5 MPa, and the standard speed range is 30–800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 60 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. |
| ×60 | 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.
Engineers can fine-tune the actuator's end stop by up to 40 mm during initial machine setup, eliminating the need to fabricate shims or swap cylinders to achieve the exact stroke required for a new fixture.
On high-cycle clamping or pressing stations, the adjustable stroke can be periodically shortened to compensate for wear on tooling or contact surfaces, maintaining consistent clamp force without replacing the cylinder.
In packaging or sorting lines, operators can quickly adjust the pusher stroke via the rear screw to handle different product sizes or case dimensions, reducing downtime between production runs.
Choose the SCJ80X60-40S when you need to dial in a precise stopping position within a 40 mm window on an 80 mm bore platform. For applications requiring a higher force class, stepping up to the 100 mm bore provides 3927 N of push force at 0.5 MPa; for a lighter, more compact solution, the 63 mm bore offers 1559 N. If the stroke does not need field adjustment, a fixed-stroke SC80 cylinder is a simpler alternative.
This model is a direct replacement for an existing AirTAC SCJ80X60-40S with a magnet, basic mount, TPU seals, and PT ports. For strokes of 300 mm or more, consider the potential for side-loading and rod bending; an external guide rail or a switch to a guided cylinder is recommended to protect the rod and bearing.
Adjustable-stroke checklist
As a single-rod cylinder, push and pull forces differ. 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.
A rear adjusting screw lets you shorten the stroke end by up to 40 mm from the nominal 60 mm maximum. Unlike a fixed-stroke SC cylinder, this allows on-machine fine-tuning without changing the cylinder. It does not adjust the cylinder's force or speed.
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