Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X175-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X175-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 175mm stroke, 1/8" 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.
- BoreØ20 mm
- Stroke175 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MACJ20X175-40S
Double-acting by design, this version lets you dial the extend stroke down by up to 40 mm from its full 175 mm travel using the external adjuster, while variable cushions at each end let you run faster cycles without hammering the covers. The 20 mm bore pushes 157 N at 0.5 MPa and 219.8 N at 0.7 MPa.
AirTAC builds the MA body by rolling the aluminium covers and stainless block onto the barrel - a riveted joint that stays sealed in wet, washed-down corners of the shop. The magnet is standard, so position feedback via CMSG, DMSG or EMSG sensors needs no option codes. With a 2:1 margin, the 157 N extend force translates to about 8 kg of vertical lifting on real parts.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X175-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X175-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X175-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -40 | 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 (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 MACJ20X175-40S Is Used
Carton push-off
Pushes folded cartons off a small conveyor at 157 N, trimming the stroke by up to 40 mm so the rod clears the transfer plate.
Analyser tray positioning
Positions sample trays in an automated lab analyser, where the 40 mm window fine-tunes dispense height without changing fixtures.
Label press idler
Sets idler roller height on a narrow-web label press within the 40 mm band, with cushions softening every stop at speed.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X175-40S the Right Cylinder?
Sizing check: the 20 mm bore at 157 N push suits small clamps and gates; drop to the 16 mm bore (100.5 N) for lighter duty or rise to 25 mm (245.3 N) for heavier picks. Mount with the FA flange or LB foot and pair with I or Y rod knuckles where the load pivots. Note the stop screw only shortens the extend stroke within the window - it will not lengthen travel past 175 mm, and it holds nothing once air is lost.
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 MACJ20X175-40S FAQ
Push is 157 N at 0.5 MPa and 219.8 N at 0.7 MPa; pull is 131.9 N and 184.7 N respectively. Theoretical peak: 32 kgf at 1.0 MPa. Air supply 0.15-1.0 MPa (22-145 psi), rod speed 30-800 mm/s.
No - every MA-series MACJ ships with the magnet built in, so CMSG, DMSG and EMSG switches mount straight onto the barrel. The 40 mm adjust window sets a shorter extend stroke mechanically; it stops the piston at a position but is not a brake, and the rod still moves if air pressure is lost.
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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.
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