Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 250mm 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
- Stroke250 mm
- Port size1/4"
- Acting typeDouble acting, 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 MACJ50X250-75S
A double-acting mini cylinder with a 75 mm adjustable-stroke window: an external stop screw trims the extend stroke anywhere inside that range on site, while variable air cushions at both ends dial out end-of-stroke shock. At 0.5 MPa (72 psi) the 50 mm bore pushes 981 N and pulls 881 N, climbing to 1374 N push at 0.7 MPa (102 psi), so it covers the force class most packaging and assembly machines ask of a mid-size actuator.
The body is a riveted stainless-steel round barrel with aluminium covers and a 16 mm hard-chrome plated rod, a build that shrugs off washdown and damp far better than painted-steel minis. Every unit leaves the factory with the piston magnet fitted, so CMSG, DMSG or EMSG switches clip on without a special-order piston. Working the numbers: halve the 981 N push rating and you still have about 589 N of usable force at 0.5 MPa (72 psi) for real work.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 mm |
| Acting type | Double acting, 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MACJ50X250-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -75 | 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 MACJ50X250-75S Is Used
Case transfer on a carton line
Pushes 300 x 200 mm cartons across a transfer plate; the 75 mm window lets line engineers re-tune the throw between SKUs without swapping the cylinder.
Lift assist for a bakery tray elevator
The bore equates to roughly 100 kgf at 0.5 MPa (72 psi), so with a 2:1 margin it lifts about 50 kg vertically, matching loaded tray weights.
Position-checked divert blade
The standard piston magnet feeds CMSG or DMSG switches so the PLC confirms each blade stroke on a pallet divert, cycle after cycle.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X250-75S the Right Cylinder?
Step down to the 40 mm bore if 628 N at 0.5 MPa (72 psi) covers your load, or up to the 63 mm bore (1558 N) when you need headroom. The 75 mm trim sets final extend position mechanically; remember it is an end stop, not a mid-stroke lock, and if air is cut the rod can still drift, so use a valve or lock for held loads. Mount with the FA flange or LB foot, add I or Y rod knuckles where alignment wanders, and at 250 mm of stroke keep side loads low to protect the 16 mm rod from bending.
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 MACJ50X250-75S FAQ
Double-acting with a 75 mm adjustable window: push 981 N and pull 881 N at 0.5 MPa (72 psi), push 1374 N and pull 1233 N at 0.7 MPa (102 psi), and 200.1 kgf theoretical maximum at 1.0 MPa (145 psi). The stop screw shortens the extend stroke anywhere inside the 75 mm window; it does not lengthen travel past 250 mm.
The adjuster is a mechanical end stop for the extend stroke only: it sets final position but will not hold the piston mid-stroke, and on air loss the rod still drifts under load. For position feedback the magnet is built in as standard, so CMSG, DMSG and EMSG switches mount directly on the barrel. Cushions at both ends are variable, so you can soften stops as speed climbs toward the 800 mm/s top of the 30-800 mm/s range.
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.
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