
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ32X400-40S is a genuine double-acting aluminum-barrel mini cylinder with a Ø32mm bore, a 400mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 360–400mm. Adjustable air cushion (both ends).
The AirTAC MBLCJ32X400-40S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 402 N push force at 0.5 MPa through a Ø12 mm hard-chrome plated carbon-steel rod. The 40 mm adjustment code lets you trim the rear travel, creating a usable stroke window of 360-400 mm to fine-tune end positions. The integrated magnet (-S) supports CMSG reed and DMSG/EMSG electronic sensors for precise position feedback.
Unlike the fixed rubber bumper on the MBLJ, the screw-tunable air cushion on this SKU decelerates heavy 400 mm moves, protecting the end covers from impact. The riveted rolling-packed aluminum barrel and heterogeneous two-way grease-retaining piston seal maintain consistent lubrication. Remember that the rear stopper sets the travel end; it does not lock the load, and the cushion only decelerates. An external guide is highly recommended for this 400 mm stroke to prevent rod bending from side loads.
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ32X400-40S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø32 mm |
| Nominal stroke | 400 mm |
| Adjustable window | 360–400 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 500 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 32 | Bore size in mm. |
| ×400 | Nominal stroke length in mm. |
| -40 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Acts as an adjustable stop gate on a PCB conveyor line, using the 360-400 mm stroke window to index varying board widths while the cushion softens the stop impact.
Regulates fabric tension on a textile loom; the tunable air cushion prevents sudden jerk at the 400 mm stroke end, protecting delicate yarn from snapping.
Drives a carton flap-folding arm in a packaging machine, leveraging the 402 N push force to bend heavy cardboard while the magnet confirms arm retraction.
When sizing this 32 mm bore cylinder, you can step down to the 25 mm bore (245 N push @0.5 MPa) for lighter duties, or step up to the 40 mm bore (628 N push @0.5 MPa) for heavier loads. Choose the MBLCJ over the MBLJ when your application requires tunable end-of-stroke deceleration rather than a fixed bumper, or over the MBLC when you need the 360-400 mm rear travel adjustment window. The rear adjuster is a mechanical travel stop, not a lock; it will not hold position without live air pressure, so use an external locking device if the load must be held. Mounting is limited to Basic, FA (flange), or LB (foot) brackets; there is no SDB pivot or back-cover option. For exact replacement matching, confirm the 32 mm bore, 400 mm nominal stroke, 40 mm adjust code, G1/8 port, PT thread form, and the built-in magnet.
Quick checklist
At 0.5 MPa, this 32 mm bore cylinder provides 402 N push and 346 N pull force. At 0.7 MPa, the push force is 563 N. The maximum theoretical force is 82 kgf at 1.0 MPa.
The rear adjustable stroke is a mechanical travel stop that lets you trim the end position within a 360-400 mm window. The adjustable air cushion is a screw-tunable valve that decelerates the piston near the end covers. Neither of these features locks or holds the load; the cylinder requires live air to maintain position.
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