Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 125mm 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.
- BoreØ40 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH
Just over 64 kgf of push from a compact round body - that is bore 40 at work here, with 628.3 N forward and 527.8 N on retract at 0.5 MPa, climbing to 879.6 N once supply reaches 0.7 MPa and 128.1 kgf theoretical at 1.0 MPa. The 125 mm stroke suits tight clamping work, and the piston magnet is standard, so CMSG, DMSG or EMSG switches report jaw position without a special-order piston.
Construction is a riveted stainless barrel with a hard-chrome plated 16 mm rod, an arrangement that outlasts painted minis in wet or outdoor plant. Variable air cushions at both ends let you tune the stop as cycle speed climbs. For sizing, plan on about 377 N of real push at 0.5 MPa; that is enough to raise a 32 kg load vertically once you keep a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Double acting + cushion |
| 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 | 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 (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 MAC Stainless Steel Mini Air Cylinder MAC40X125SUH
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -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 MAC Stainless Steel Mini Air Cylinder MAC40X125SUH Is Used
Clamping weld fixtures
Holds steel brackets against a jig in a fabrication cell, where 628 N at 0.5 MPa secures parts for manual MIG tacking.
Carton kickers on packaging lines
The 125 mm stroke is enough to kick misaligned cartons off a belt, and the cushions tame the strike at full extension.
Valve actuation in water treatment
Operates a butterfly valve lever in a damp pump house, where the stainless body resists condensation better than painted steel.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH the Right Cylinder?
A bore 32 MAC manages 402 N at 0.5 MPa and a bore 50 manages 981 N, so this 40 mm unit at 628 N fits jobs between light and heavy. With only 125 mm of travel it is a natural clamp or ejector, and side-load leverage stays low. The rod falls back under load the moment air is lost - a plain MAC cannot hold position - so add a rod lock or pilot check wherever a clamp must stay shut on loss of supply. The U flat-end back cover mounts directly to a machine plate; FA flange, LB foot and SDB pivot brackets plus CA and CM back covers handle other arrangements, and the standard magnet pairs with the full switch range.
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 MAC Stainless Steel Mini Air Cylinder MAC40X125SUH FAQ
Push at 0.5 MPa is 628.3 N and pull 527.8 N; at 0.7 MPa it reaches 879.6 N push and 738.9 N pull, with a theoretical maximum of 128.1 kgf at 1.0 MPa. Supply is 40 um filtered air at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), rod speed 30-800 mm/s.
The S in the code confirms the piston magnet, which is standard on every MAC anyway - CMSG, DMSG and EMSG reed or electronic switches clip on anywhere along the barrel. U is the flat-end back cover for direct bolting to a plate; CA pivot and CM round-end covers, plus FA flange, LB foot and SDB pivot brackets, are the alternatives. Ports are 1/8" and the 16 mm rod carries an M12x1.25 male thread.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MAC Stainless Steel Mini Air Cylinder MAC40X125SUH
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.