The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X350-100 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, 350mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X350-100 delivers 2513 N of push force at 0.5 MPa from an 80 mm bore, with a field-adjustable stroke end that can be shortened by up to 100 mm via the rear-cap screw. This lets commissioning engineers dial in the exact stop position on the machine without swapping the cylinder or adding external hard stops. The 25 mm piston rod and 28 mm air cushion work together to manage deceleration across the full 30-800 mm/s speed range.
At its nominal 350 mm stroke, the cylinder body length A(SCJ) is 239 mm plus stroke, making it compact enough for packaging and material-handling stations where space is tight. The PT3/8 ports and M20x1.5 rod thread connect directly to standard pneumatic fittings. Because this is a single-rod double-acting cylinder, push force exceeds pull force (2268 N at 0.5 MPa), so always size for the weaker retract direction if the load is bidirectional.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X350-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 350 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. |
| ×350 | 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 line commissioning, the 100 mm adjustment range lets technicians fine-tune the end-stop position on the fly. Once the optimal stroke is found, the screw is locked down, eliminating the need to fabricate custom shims or swap cylinders.
When a packaging machine switches between box sizes, the SCJ80X350-100 can be quickly adjusted to match the new product width. The 2513 N push force at 0.5 MPa is ample for erecting and sealing medium-format cartons.
In automated welding or assembly fixtures, the adjustable stroke compensates for electrode wear or part tolerance drift over thousands of cycles. Operators can restore the correct clamp position in seconds without disassembling the tooling.
Choose the SCJ80X350-100 when you need to fine-tune the stroke end over a 100 mm window without changing the cylinder. If your load requires more push force, step up to the 100 mm bore SCJ100 series, which provides 3927 N at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC80X350 is a simpler alternative that omits the rear adjusting screw. At 350 mm of extension, rod bending under side load becomes a real concern—fit an external guide rail or switch to a guided cylinder if the load is not perfectly axial.
This model is a direct replacement for another AirTAC SCJ80X350-100 with PT ports and basic mounting. If your original cylinder has a magnet, order SCJ80X350-100S; for a centre trunnion mount, specify SCJ80X350-100TC. Always match bore, nominal stroke, and the 100 mm adjust range to maintain the same machine setup.
Adjustable-stroke checklist
At 0.5 MPa, the 80 mm bore generates 2513 N pushing and 2268 N pulling. At the maximum operating pressure of 1.0 MPa, push force reaches 5026 N. Always use the lower pull force for bidirectional load calculations.
Yes, provided the mounting style and port thread match. The SCJ body is slightly longer to accommodate the adjusting screw, so check that the extra length fits your machine. The stroke range will be 250-350 mm, adjustable from the rear cap.
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