Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 500mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 460–500mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke500 mm
- Adjustable460–500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
- 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 MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40
The AirTAC MBLCJ40X500-40 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a screw-tunable air cushion at both ends. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa. The 40 mm adjustment code allows you to trim the rear travel up to 40 mm, creating a usable end-position window of 460 to 500 mm for precise machinery setup.
This 40 mm bore variant uses a G1/4 port and a Ø16 carbon-steel rod with 20 µm hard-chrome plating to resist corrosion and wear. The riveted rolling-packed aluminum barrel and heterogeneous two-way grease-retaining piston seal ensure stable friction. Because this 500 mm stroke pushes the bore's maximum standard length, the small 16 mm rod is highly susceptible to side-load bending; an external guide rail is strongly recommended to prevent premature seal failure. The overall length extends to A + 1000 + 40 mm.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 500 mm |
| Adjustable window | 460–500 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 | 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.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40 Is Used
Textile Loom Takedown
Drives the 500 mm extraction stroke on fabric take-up units, using the 460-500 mm window to dial in exact beam alignment while the air cushion softens the high-speed end impact.
Pallet Reject Arm
Pushes misaligned cartons off a 40 mm bore logistics conveyor, relying on the 628 N push force at 0.5 MPa to overcome box inertia without slamming the end cover.
Wood Planer Feed
Actuates the thickness gate on woodworking machinery, where the tunable cushion prevents the heavy 500 mm rod assembly from hammering the cylinder heads during rapid retraction.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40 the Right Cylinder?
For lower force needs, stepping down to the 32 mm bore yields 402 N of push force at 0.5 MPa, whereas moving up to the 50 mm bore provides 981 N. Choose this MBLCJ over the MBLJ if your machine cycles heavy loads and needs tunable end-cover protection rather than a fixed rubber bumper. Select the MBLC variant instead if your design requires a fixed stroke without a rear stopper.
Remember that the rear adjuster is a travel stop, and the air cushion only decelerates the piston; neither component locks or holds the load in place, so external locking mechanisms are required for vertical positioning. Mounting is limited to Basic, FA flange, or LB foot brackets; this series does not support SDB pivots or back-cover options. As an exact replacement, match the 40 mm bore, 500 mm stroke, 40 mm adjust code, G1/4 port, PT thread, and note that this specific SKU lacks the -S suffix, meaning no built-in magnet is fitted for CMSG, DMSG, or EMSG sensor switches.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40 FAQ
At 0.5 MPa, this 40 mm bore cylinder delivers 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa. The operating pressure range is 0.15 to 1.0 MPa.
This specific SKU lacks the -S suffix, so it has no built-in magnet and cannot accept AirTAC CMSG, DMSG, or EMSG position sensors. The 40 mm rear adjustment is a travel stop that sets the end position within a 460-500 mm window, and the air cushion only decelerates the piston; neither feature locks or holds the load in place.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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