2. Piston features bidirectional Y-seal structure with cushioning function, offering extended service life and low friction resistance;
3. Aluminum barrel with cruciform reinforcement and black-anodized piston rod for enhanced corrosion resistance;
4. Precision machined cylinder surface ensures smooth operation;
5. Multiple cylinder specifications and mounting accessories available for flexible configurations.
Category: Standard Cylinders | Brand: AIRTAC | Series: SI125
AirTAC SI125X37 Standard Cylinder Specifications
- Model: SI125X37
- Type: ISO 15552 compliant single-acting/double-acting pneumatic cylinder
- Bore size: 125 mm
- Stroke: 37 mm (customizable from 25-500 mm)
- Operating pressure: 0.1-0.9 MPa (14.5-130.5 PSI)
- Cushioning: Adjustable pneumatic cushion at both ends
- Port size: G3/8 (NPT1/2 optional)
- Piston rod thread: M20×1.5 (standard)
- Material: Aluminum alloy barrel, chrome-plated steel rod
- Seal type: NBR (nitrile) seals standard (FKM available for high temp)
- Temperature range: -20℃ to 80℃ (extended to 150℃ with FKM seals)
- Weight: 3.8 kg (base model without accessories)
- Dimensions:
- Length: 242 mm (min. compact length)
- Body diameter: 140 mm (including mounting brackets)
- Rod end height: 180 mm from centerline
- Mounting types: Basic MF1, foot-mounted MP2, flange-mounted MF4
- Max theoretical force:
- Thrust @ 0.6MPa: 7,358 N (double-acting)
- Return force @ 0.6MPa: 6,892 N
High-precision industrial cylinder designed for heavy-duty applications requiring precise linear motion control. Features wear-resistant chromium plating and self-lubricating bearings for maintenance-free operation. Optional magnetic piston version (SI125X37-M) enables position feedback when paired with sensors. Compatible with ISO 15552 mounting accessories.
- Automotive production line clamping fixtures
- Steel mill roller adjustment systems
- Plastic injection molding machine ejectors
- Paper processing equipment tension control
- High-cycle packaging machine actuators
1. Align cylinder axis within ±0.2° to prevent side load
2. Use flexible couplings for stroke compensation in thermal expansion environments
3. Lubricate with ISO VG32 hydraulic oil if non-lubricated air is used
4. Allow 50mm clearance behind rod end for full stroke operation
| Property | Property Value |
|---|---|
| sku | SI125X37 |
| Seal Material | Polyurethane |
| 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 80°C Speed Range: 30-500 mm/s |
| Port Size | PT 1/2 |
| Piston Rod Material | Medium Carbon Steel |
| Magnet | Non-magnetic |
| Bore Diameter | 125mm |
| Stroke | 37mm |
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.









