1. Compliant with ISO 21287 standard, featuring highly versatile mounting dimensions;
2. Thread-connected cylinder body with front/rear covers ensures structural integrity and maintenance convenience;
3. Precision-machined bore with hard anodizing treatment delivers exceptional wear resistance and extended service life;
4. Asymmetric bidirectional piston sealing configuration combines compact dimensions with integrated oil reservoir functionality;
5. Space-optimized design reduces installation footprint by 50% compared to ISO 15552 standard cylinders of equivalent bore size;
6. Triple-side sensor grooves along cylinder body facilitate flexible sensor mounting;
7. Integrated shock absorber pads effectively dampen residual energy from high-speed operation and mechanical rotation;
8. Comprehensive selection of standardized mounting accessories available.
Category: Adjustable Cylinder | Brand: AIRTAC | Series: ACEJ12
AirTAC ACEJ12X40-20B Adjustable Compact Cylinder Specifications
- Model: ACEJ12X40-20B
- Type: Adjustable stroke compact pneumatic cylinder
- Bore size: 40mm (1-9/16")
- Stroke: 20mm (0.79")
- Adjustment range: ±2mm (axial stroke adjustment)
- Buffer type: Rubber cushion (front) + adjustable cushion (rear)
- Operating pressure: 0.05–1.0 MPa
- Temperature range: -20℃ to 80℃
- Mounting style: Basic type (MF1) with axial mounting holes
- Port size: M5x0.8 (standard), G1/8 optional
- Weight: 420g ±5% (without accessories)
- Dimensions: 102mm(L) × 40mm(W) × 40mm(H)
- Piston rod material: Hard chrome-plated carbon steel
- Tube material: Anodized aluminum alloy
- Seal material: NBR/PU compound
- Protection rating: IP54 (standard), IP67 optional
- Lubrication: Pre-lubricated (Grease-free operation)
Ultra-compact cylinder with mechanical stroke adjustment capability, featuring dual cushioning system for precise end-position control. The hexagonal body design enables easy wrench adjustments and space-efficient clustering. Includes built-in auto-stop mechanism at minimum stroke position for safety.
- Precision workpiece clamping in CNC fixtures
- Micro-positioning in semiconductor handling systems
- Valve actuation in compact fluid control modules
- Paper feed mechanisms in office automation equipment
- Medical device component positioning
| Property | Property Value |
|---|---|
| sku | ACEJ12X40-20B |
| Adjustable Stroke | <20mm> |
| Understood. Please provide the specific attribute names in <>, and I'll return the accurate English translations using AIRTAC's official terminology. Example: User input: <缸径> My output: Bore | Operating Temperature: -20°C to 70°C Speed Range: 30 to 500 mm/s |
| Port Size | M5×0.8 |
| Piston Rod Thread Type | External Thread |
| Magnet | Non-magnetic |
| Bore Diameter | 12mm |
| Stroke | <40mm> |
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.











