The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X900-100S 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, 900mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The AirTAC SCJ80X900-100S is a double-acting, single-rod pneumatic cylinder featuring a rear-cap adjusting screw that provides up to 100 mm of field-adjustable stroke-end reduction. With an 80 mm bore, it delivers a robust push force of 2513 N at 0.5 MPa (up to 4523 N at 0.9 MPa), making it a powerful actuator for long-stroke applications requiring fine end-position tuning. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for precise position feedback.
This model has a nominal 900 mm stroke and a 25 mm diameter piston rod with M20x1.5 threads, supported by a 28 mm air cushion for smooth deceleration. The body length (A dimension) is 239 mm, and the cylinder operates on filtered air at 0.15-1.0 MPa. Its adjustable stroke end is ideal for commissioning trials, format changeovers, and compensating for mechanical wear without replacing the entire cylinder.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X900-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 900 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. |
| ×900 | 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.
During machine setup, the 100 mm adjusting screw allows engineers to precisely dial in the 900 mm stroke end position for optimal part placement, eliminating the need for iterative cylinder swaps or complex external hard stops.
Provides a powerful 900 mm linear push to move heavy materials between conveyors or into processing stations. The adjustable stroke allows operators to quickly adapt the end position for different pallet or product sizes without mechanical changes.
In high-cycle clamping fixtures, the adjustable stroke end can be periodically advanced to compensate for wear on tooling or workpieces, maintaining consistent clamping force and position over the machine's lifetime without replacing the cylinder.
Choose the SCJ80X900-100S when you need a powerful, long-stroke actuator with the ability to fine-tune the stroke end position on the machine. If 2513 N of push force at 0.5 MPa is insufficient, stepping up to a 100 mm bore provides 3927 N; if it is excessive, a 63 mm bore delivers 1559 N. For applications where the stroke length is fixed and never needs adjustment, a standard SC80X900 fixed-stroke cylinder is a simpler, more cost-effective alternative.
For a 900 mm stroke, careful management of side loads is critical to prevent rod bending. Always align the load axially with the rod. If side forces are unavoidable, use an external linear guide or consider a guided cylinder. This SCJ model is a direct replacement for another AirTAC SCJ80X900-100S with a PT port, basic mounting, and a magnet sensor. The mounting style can be upgraded with FA front flange, LB foot, or TC centre trunnion kits using the F-SC80 accessory pattern.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The force increases with pressure, reaching 4523 N push at the maximum operating pressure of 0.9 MPa. The pull force is always lower due to the area of the 25 mm piston rod.
A screw on the rear cap mechanically limits the piston's retraction stroke end, allowing you to shorten the 900 mm nominal stroke by up to 100 mm. This is a mechanical end-stop adjustment, not a position-locking device. The cylinder will not hold its position if air pressure is lost; an external brake or pilot-operated check valve is required for load holding.
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