
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ32X450-75 is a genuine double-acting aluminum-barrel mini cylinder with a Ø32mm bore, a 450mm nominal stroke and a rear adjustable-stroke stopper — trim up to 75mm for a usable window of 375–450mm. Adjustable air cushion (both ends).
The AirTAC MBLCJ32X450-75 is a double-acting, single-rod mini cylinder engineered for compact spaces requiring precise end-position tuning. It features a rear stroke adjuster allowing you to trim up to 75 mm of travel, creating a usable stroke window of 375-450 mm. Driven by a 32 mm bore, it delivers 402 N of push force and 346 N of pull force at 0.5 MPa. The riveted aluminum barrel and 20 µm hard-chrome plated carbon-steel rod ensure durability across the 450 mm span.
Unlike the standard MBLJ which relies on a fixed rubber bumper, this MBLCJ variant incorporates a screw-tunable adjustable air cushion at both ends. This allows you to dial in end-of-stroke deceleration for heavier or faster moving loads, absorbing kinetic energy to protect the end covers. Note that this specific SKU lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensors. The rear stopper sets your travel end point but does not lock or hold the load in place.
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ32X450-75 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø32 mm |
| Nominal stroke | 450 mm |
| Adjustable window | 375–450 mm (trim 75 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. |
| ×450 | Nominal stroke length in mm. |
| -75 | 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).
Governs tensioning rollers in weaving machines, using the 375-450 mm adjustable window to maintain exact fabric feed while the air cushion softens the 450 mm rod extension.
Pushes cartons at 402 N push force onto secondary conveyor belts, relying on the tunable cushion to prevent harsh impacts at the end of the 450 mm travel.
Acts as an adjustable travel stop for varying board lengths in woodworking mills, setting the exact 375-450 mm end position without locking the material in place.
When sizing this 32 mm bore model, consider stepping down to the 25 mm bore if your application requires less than 245 N of push force at 0.5 MPa, or stepping up to the 40 mm bore if you need 628 N to move heavier assemblies. Choose the MBLCJ over the MBLJ when your cycle times demand tunable pneumatic cushioning rather than a fixed bumper, or pick the MBLC if you prefer a fixed standard stroke without the rear adjustment mechanism.
Because the overall length equals A + 2 x stroke + adjust, this 450 mm stroke unit is inherently long. The 12 mm rod is susceptible to bending under side loads, so an external guide rail is mandatory to prevent premature seal wear. Mounting is limited to Basic, FA (flange), or LB (foot) styles; no SDB pivot or back-cover options exist. To replace this exact unit, match the 32 mm bore, 450 mm stroke, 75 mm adjust code, G1/8 port, PT thread, and confirm no magnet is required.
Quick checklist
At 0.5 MPa, this 32 mm bore cylinder provides 402 N of push force and 346 N of pull force. At 0.7 MPa, the push force increases to 563 N. The maximum theoretical force is 82 kgf at 1.0 MPa.
The rear adjuster is a mechanical travel stop that trims your usable stroke window down to 375 mm from the 450 mm nominal length, but it does not lock or hold the load. The adjustable air cushion is a separate screw-tunable valve that controls deceleration at the stroke ends to protect the covers. Neither feature acts as a brake.
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