Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S
The AirTAC MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S is a genuine double acting, double rod, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 175mm stroke, 1/4" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S
Changeovers rarely land on the same millimetre, so the MACJ50X175-20S carries a 20 mm window over which the extend stroke can be shortened with a stop screw - no shims, no new cylinder. The unit stays double-acting with cushions at each end that you wind in or out to kill end-of-stroke impact at speeds from 30 to 800 mm/s. At 0.5 MPa the bore delivers 981.3 N out and 880.8 N back; push supply pressure toward 0.7 MPa and output reaches 1373.8 N, all inside a 0.15-1.0 MPa (22-145 psi) operating envelope with 200.1 kgf on paper at 1.0 MPa.
The barrel is stainless and the 16 mm rod hard-chrome plated, a pairing that shrugs off condensation, coolant mist and outdoor exposure better than painted minis can. Since the magnet ships built in, CMSG / DMSG / EMSG switches drop straight onto the tube.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 175 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø50mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
MAJ / MACJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (double rod, adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S Is Used
Case packer push-off
Squares and pushes 12-bottle shrink packs onto a transfer belt; 981.3 N at 0.5 MPa gives headroom, with the 20 mm window absorbing pack-height variation.
Rotary index pin
Locks a 600 mm indexing dial between stations on an assembly machine; the 880.8 N pull side keeps the pin seated and an EMSG switch confirms engagement.
Bench crimp fixture
Crimps small terminal housings at a repair bench; about 588 N of dependable working force handles the crimp while cushions soften every cycle at 30-800 mm/s.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S the Right Cylinder?
If the actuator must stay put during a power cut, add a check valve or locking fitting - the 20 mm trim screw sets end of travel, it is not a mid-stroke lock and drift will still occur on air loss. The built-in magnet pairs with CMSG / DMSG / EMSG switches for end-of-stroke confirmation. FA flange and LB foot are the catalog mounts; I and Y rod knuckles cover pivoting linkages, and there is no SDB choice on this adjustable model.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S FAQ
Rated output at 0.5 MPa is 981.3 N on extend and 880.8 N on retract. At 0.7 MPa the numbers become 1373.8 N and 1233.1 N, with 200.1 kgf as the theoretical maximum at 1.0 MPa. Air supply 0.15-1.0 MPa (22-145 psi), 1/4" ports, 16 mm hard-chrome rod with M14x1.5 male thread.
It is the range over which the extend stroke can be shortened on site with the stop screw - useful when the exact end position is only set during commissioning. It cannot lengthen the stroke beyond 175 mm, it works only on the extend side, and it does not lock the rod: on air loss the piston drifts, so add holding valving if the load must stay put.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X175-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.