The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-75STC 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, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-75STC is a double-acting, single-rod pneumatic cylinder that integrates a rear-cap adjusting screw, giving you up to 75 mm of field-adjustable stroke-end reduction without removing the cylinder from the machine. With an 80 mm bore, it delivers 2513 N of push force at 0.5 MPa and 4523 N at the maximum operating pressure of 0.9 MPa, using a 25 mm diameter piston rod and PT3/8 ports.
This model is factory-configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion mount (TC) that includes the TCM1 bracket, allowing the cylinder to pivot and absorb misalignment in swinging applications. The standard TPU seals provide reliable operation from -20 to +70 °C, and the 28 mm air cushion decelerates the piston smoothly at both ends of the 200 mm nominal stroke.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-75STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 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. |
| ×200 | 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.
During initial machine setup, use the 75 mm adjustment screw to precisely dial in the stroke end position without fabricating custom hard stops, drastically reducing commissioning time.
On packaging or sorting lines, quickly adjust the cylinder's stroke end to accommodate different product sizes or box formats, enabling a fast changeover between batches.
In clamping or pressing operations, periodically adjust the stroke end to compensate for tooling wear or material thickness variations, maintaining consistent process quality over time.
Choose the SCJ80 when your application needs the force class of a 2513 N push at 0.5 MPa. If you require less force, stepping down to the 63 mm bore reduces push force to 1559 N, while moving up to the 100 mm bore increases it to 3927 N. The SCJ is the right choice over a fixed-stroke SC when you need to fine-tune the stroke end for commissioning, format changes, or wear compensation; select a standard SC if your stroke length is permanently fixed.
For a direct replacement, match the 80 mm bore, 200 mm nominal stroke, 75 mm adjustable range, PT port thread, and the TC centre trunnion mounting with the F-SC80TC bracket. The built-in magnet must also be present on the replacement to maintain sensor compatibility. For this 200 mm stroke, side-loading is generally manageable, but for strokes exceeding 300 mm, consider an external guide rail or a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The push force is higher because the single rod reduces the effective piston area on the retract side. The maximum push force at the 0.9 MPa operating limit is 4523 N.
Only if your application no longer requires the stroke adjustment feature. The SCJ80X200-75STC has a rear adjusting screw that shortens the stroke end by up to 75 mm. A standard SC80X200 lacks this screw and has a fixed 200 mm stroke. For a full functional replacement, you need another SCJ80 with a 75 mm adjust range, matching magnet and TC trunnion mount.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.