Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-100S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-100S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke400 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 MAJ40X400-100S
Long travel rarely needs every millimetre, so the MAJ40X400-100S pairs a 400 mm stroke with a generous 100 mm on-site trim window, all double-acting. The push is about 628 N at 0.5 MPa, which works out near 64 kg of theoretical vertical lift - plan on moving around 32 kg to keep a 2:1 margin.
Across 400 mm of travel, the stainless barrel and hard-chrome plated 16 mm rod hold a straight, low-friction path where painted-steel minis would corrode, and the standard built-in magnet lets CMSG, DMSG or EMSG switches report position anywhere along the run.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-100S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-100S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MAJ40X400-100S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -100 | 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 MAJ40X400-100S Is Used
Bandsaw cross-feed
Trims the 400 mm feed by up to 100 mm so one cylinder serves both short stock and full bar cut-off.
Tray drawer loader
Shuttles component trays in and out of a deep shelf rack; 528 N pull at 0.5 MPa handles a 20 kg loaded tray.
Booth slide-door automation
Opens a 400 mm access panel on a powder-coating booth, trimmed inside the 100 mm window to clear fixtures.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-100S the Right Cylinder?
Dropping to a 32 mm bore saves space but caps push at about 402.2 N at 0.5 MPa; this 40 mm bore is the ceiling of the MA series, so heavier thrust means leaving the family. Long strokes amplify side loads - guide the load externally or fit I/Y rod knuckles so the 16 mm rod is never asked to resist bending, and attach via FA flange or LB foot. The 100 mm stop is an extend-side end stop rather than a mid-travel brake: with air removed, the piston can still be pushed along its travel.
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 MAJ40X400-100S FAQ
Bore 40 mm, stroke 400 mm (well inside the 500 mm standard limit for this bore), extend stroke adjustable by up to 100 mm. Forces: 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, 128.1 kgf theoretical maximum at 1.0 MPa. Air port is 1/8"; pressure 0.15-1.0 MPa (22-145 psi).
The screw is a travel limiter, not a brake. Cut the air and the piston still slides freely right up to the set stop, so anything carried on the rod needs its own mechanical support or latch where hold-in-place matters.
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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