Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 250mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke250 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM12×1.25
- CushionFixed anti-impact bumper pads
- 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S
A 10 mm trim window is the whole point of the MAJ40X250-10S: a 250 mm double-acting stroke whose extend end position can be nudged with the external stop screw until it lands exactly where the machine needs it. Force output is 628.3 N push and 527.8 N pull at 0.5 MPa, ample for gate and pusher duties at this length.
Construction follows the MA recipe: a stainless round barrel rolled together with aluminium covers and a stainless block, with no fasteners along the tube. The 16 mm hard-chrome rod resists scoring from dust-laden air, and the standard built-in magnet lets a DMSG switch report end position without any special piston order. When budgeting the machine, work from about 377 N of usable force at 0.5 MPa and keep the rest as reserve.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 | Fixed anti-impact bumper pads |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -10 | 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S Is Used
Stopper gate on a roller conveyor
Pops up to stop cartons at a robot pick cell; the 10 mm window squares the stopper blade to the belt line during commissioning without re-drilling.
Test rig actuator with fine end trim
Presses connectors into a burn-in board where seating depth varies by batch; the stop screw sets depth across the 10 mm range, at 879.6 N if you run 0.7 MPa.
Diverting pusher at a sortation spur
Sweeps parcels onto a reject lane; the built-in magnet and a CMSG switch confirm full retract before the next parcel is released.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S the Right Cylinder?
A 32 mm bore gives 402.2 N push at 0.5 MPa if the job is light; this 40 mm bore is the ceiling of the MA range at 628.3 N. The trim screw shortens the extend stroke only - it acts as an end stop rather than a brake, so a dropped-load risk calls for a separate locking valve. For a 250 mm stroke, mount by FA flange or LB foot and keep the payload guided, since side loads bend a 16 mm rod quickly. End-position sensing comes free via the standard magnet.
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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X250-10S FAQ
Expect 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, and a theoretical 128.1 kgf peak at 1.0 MPa. Air supply spans 0.15-1.0 MPa (22-145 psi) and the extend stop adjusts across the 10 mm window.
No. The MAJ40X250-10S carries fixed anti-impact pads that only soften the final impact; they cannot be metered like the adjustable cushions on the MACJ series. What you can adjust is the extend stroke, by up to 10 mm, via the external stop screw.
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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.
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Most inquiries answered within 7-8 hours.
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