Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25 is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 25mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting, double rod + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25
The AirTAC MGCD40X25 is a double acting, double rod JIS round-body mini cylinder with a 40 mm bore and 25 mm stroke. A 16 mm hard-chrome steel rod exits BOTH covers with the same M14x1.5 male thread at each end, so both sides of the piston see the rod-side area and the output force is equal in both directions: about 527.8 N each way at 0.5 MPa and 738.9 N at 0.7 MPa, with a theoretical maximum of 107.6 kgf at 1.0 MPa. The rear rod end can carry a stop flag, position switch trip or a second load, and the through-rod gives natural anti-rotation guidance for the moving fixture.
Unlike a bumper-pad build, this MGCD variant carries a VARIABLE AIR CUSHION at both ends: adjusting screws meter the exhaust at each stroke end so the piston decelerates smoothly, allowing higher travel speeds or heavier loads without hard metal impact. The barrel is SUS304 stainless with riveted covers for a compact JIS footprint, air is filtered to 40 um, operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, temperature range is -20 to +70 C, and speed is 30-800 mm/s. As a realistic working figure, apply about 0.6 of the 0.5 MPa force, which gives roughly 32 kg for safe vertical lifting on this 40 mm bore.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25 Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25 |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | 1/8" |
| 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 MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25 Is Used
High-speed anti-rotation transfer
The 25 mm through-rod keeps a small transfer fixture guided without external rails while the variable air cushion lets the 527.8 N cylinder cycle fast between hard stops without jolt.
Twin-load press with soft stop
Rod ends on both covers each carry a light pressing or marking tool, so one 40 mm bore does two equal-force operations (about 53.8 kgf each way) and the cushion eases contact at both ends.
Rear-switch slide on a short slide
The second rod end drives a cam or flag over a short 25 mm throw, giving a mechanical repeater of piston position in packaging or assembly stations within the 30-800 mm/s speed range.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25 the Right Cylinder?
Size the MGCD40X25 by its equal both-way force of 527.8 N at 0.5 MPa: if your load needs more, step up to bore 50 (824.3 N) or 63 (1400.9 N); if less, bore 32 (345.6 N) or 25 (206.1 N) may suffice. Choose this model when you need a through-rod with a variable air cushion at both ends for smooth high-speed stops; for a double-rod cylinder with fixed bumper pads instead of an adjustable cushion in bores 20-40, pick the MGD, and for a single rod with cushion, the MGC. The 25 mm stroke is well inside the 500 mm maximum standard stroke for this bore. Mount with the FA flange or LB foot (no CB or SDB base options) and pair with I or Y rod knuckles on either or both rod ends. Thread is PT as standard; the model code carries no S code, so no CMSG/DMSG/EMSG magnetic sensor can be fitted unless you order the -S variant, which adds the magnet. For long strokes or visible side load, add external guidance, and remember the cushion only decelerates the stroke end: it is not a lock, so use an external rod lock or pilot check valve if the load must hold on air loss.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA) & knuckle
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 and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25 FAQ
Because the double rod exposes the rod-side area on both sides, force is equal in both directions: 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa, with a theoretical maximum of 107.6 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s, and the medium is air filtered to 40 um. The bore is 40 mm with a 16 mm rod, M14x1.5 male thread on both rod ends and a 1/8" port.
The MGCD40X25 has an adjustable air cushion at both stroke ends: metering screws throttle the exhaust so the piston decelerates smoothly, which permits higher speeds and heavier loads than an unbuffered cylinder. It is not a fixed bumper pad (that is the MGD double-rod build) and not a single-rod cushioned cylinder (that is the MGC). Note the cushion only slows the piston near the end of stroke; it does not lock or hold the load on air loss, so add an external rod lock or pilot check valve where holding is required. This unit has no magnet, so CMSG/DMSG/EMSG sensors need the -S option.
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