Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40S 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 MBLCJ40X500-40S
The AirTAC MBLCJ40X500-40S is a compact double-acting aluminum mini cylinder featuring a rear adjustable stroke and an adjustable air cushion at both ends. It delivers 628 N of push force at 0.5 MPa, making it well-suited for driving heavy jigs over long 500 mm travels. The built-in magnet (-S) enables direct mounting of CMSG, DMSG, or EMSG sensor switches for precise end-position detection.
This specific SKU lets you trim up to 40 mm at the rear stopper, creating a usable stroke window of 460 to 500 mm to dial in exact tooling distances. Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable air cushions to decelerate heavy loads rapidly without slamming the end covers. The 20 um hard-chrome plated carbon-steel rod resists scuffing, while the riveted aluminum barrel and two-way grease-retaining piston seal ensure long service life. Note that the rear adjuster is a travel stop, not a lock; it sets the end position but does not hold the load without live air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40S |
|---|---|
| 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 MBLCJ40X500-40S
| 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 MBLCJ40X500-40S Is Used
CNC Lathe Bar Feeder
Pushes 3-meter steel bars into a lathe spindle; the 628 N thrust handles heavy stock while the 460-500 mm window fine-tunes the insertion depth precisely.
Pallet Transfer Reject
Diverts loaded 40x48 inch pallets off a high-speed packaging line; the tunable air cushion safely decelerates the 500 mm stroke without slamming the end covers.
Injection Mold Ejector
Knocks large molded plastic bins off a tooling die; the DMSG solid-state sensor tracks the full extension, while the cushion absorbs the heavy stripping force.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-40S the Right Cylinder?
Stepping down from this 40 mm bore (628 N push @0.5 MPa), the 32 mm bore provides 402 N, and stepping up, the 50 mm bore offers 981 N for heavier fixtures. Choose the MBLCJ over the MBLJ when your moving mass requires tuned end-of-stroke deceleration to prevent impact damage, or over the MBLC when you need to fine-tune the travel end-point within that 460-500 mm window. Because the stroke is 500 mm, the small Ø16 rod is highly susceptible to side-load bending; always guide the load externally. Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. For a direct replacement, match the 40 mm bore, 500 mm stroke, 40 mm adjust code, G1/4 port, PT thread, and the -S magnet.
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 MBLCJ40X500-40S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N push and 528 N pull force. At 0.7 MPa, the push increases to 880 N, with a theoretical maximum of 128 kgf at 1.0 MPa. The 500 mm stroke is the maximum standard length for this bore size.
The rear adjustable stroke acts as a mechanical travel stop, letting you trim the stroke by up to 40 mm (a 460-500 mm usable window). The adjustable air cushion is a screw valve that regulates air exhaust at the end covers to decelerate the load. Neither the cushion nor the stopper acts as a lock; the rod will drift if air pressure is removed.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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