The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X175-50STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 175mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The AirTAC SCJ80X175-50STC is an 80 mm bore double-acting single-rod cylinder offering a nominal 175 mm stroke that is field-adjustable by up to 50 mm via a rear-cap screw. This model delivers 2513 N of push force at 0.5 MPa, making it a strong candidate for mid-range automation tasks where the end position must be fine-tuned during commissioning or product changeovers.
This specific unit is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) pivot mount, which ships with the TCM1 bracket for swinging loads. The 25 mm rod and PT3/8 ports handle flow efficiently, while the 28 mm air cushion decelerates the piston smoothly at stroke end.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X175-50STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 50 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. |
| ×175 | Nominal (maximum) stroke length in mm. |
| -50 | 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.
Fine-tune the 175 mm stroke end by up to 50 mm during machine bring-up without swapping the cylinder or machining external hard stops, speeding up system integration.
Adjust the stop position on a packaging or palletizing line to accommodate different product sizes, using the rear screw to shift the stroke end quickly between batches.
Take up mechanical play or tooling wear over time by advancing the stroke end screw, maintaining precise positioning in clamping or pressing operations without replacing parts.
Choose this SCJ80 model when you need a robust 80 mm bore actuator with a push force of 2513 N at 0.5 MPa and the ability to dial in the stroke end by up to 50 mm. If your force requirement is lower, stepping down to the 63 mm bore reduces push force to 1559 N; for heavier loads, the 100 mm bore provides 3927 N. The centre trunnion mount is ideal for applications where the cylinder body must pivot during operation.
For a direct replacement, match the SCJ80 bore, the 175 mm nominal stroke, the -50 adjust range, PT port thread, and the TC mounting with magnet. If the 175 mm stroke introduces side-loading concerns, consider adding an external guide rail or switching to a guided cylinder to protect the rod bearing from bending moments.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this 80 mm bore cylinder produces 2513 N of push force and 2268 N of pull force. The maximum push force at 0.9 MPa is 4523 N. The pull force is lower due to the 25 mm piston rod area.
Yes, if you need the 50 mm field-adjustable stroke end. The SCJ80X175-50STC matches the SC80 bore and 175 mm nominal stroke, but adds the rear adjusting screw. Ensure your mounting (TC centre trunnion) and magnet sensor option are compatible, as the SCJ body length is slightly longer than the fixed-stroke SC.
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