The SMC 25A-MHZ2-25D is a parallel style pneumatic air gripper (2-finger, double-acting) in SMC’s 25A Series, which is designed for environments related to secondary battery manufacturing. The “25A-” designation is SMC’s series family for products adapted to stricter material and environmental requirements, especially low dew point process areas. SMC describes this series as compatible with secondary battery production environments and highlights changes in material selection and grease specification to improve performance in low dew point conditions.
From the base model code:
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25A- = Secondary battery compatible series
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MHZ2 = Parallel style air gripper (standard type)
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25 = Bore size 25 mm
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D = Double acting
This makes the 25A-MHZ2-25D a practical choice for automated gripping applications that require stable finger motion, repeatability, and compatibility with controlled process environments.
Product Positioning and Design Features
The MHZ2 platform is one of SMC’s established parallel gripper families. SMC describes the MHZ2 standard series as using an integrated linear guide for high rigidity and precision, with mounting versatility on three sides, and availability in multiple finger configurations (standard, narrow, flat). SMC also lists high repeatability (±0.01 mm) for the MHZ2 series. These design characteristics are relevant when selecting a gripper for repetitive assembly, pick-and-place, or small-part handling tasks.
For the 25A series, SMC states that the products are intended for environments with low dew points and that they use a combination of optimized materials and grease suitable for such conditions. The 25A common catalog also notes material restrictions related to copper and zinc usage (with practical exceptions for components where substitution is not feasible), which is an important point for battery manufacturing process compatibility.
Product Weight
Weight Information (Important Note)
For MHZ2-25D (standard series), a distributor technical listing (RS Singapore) provides a product weight of 1275 g (1.275 kg). This is a useful engineering reference for the standard MHZ2-25D body size and configuration.
However, for the 25A-MHZ2-25D, SMC’s 25A documentation emphasizes that 25A products are modified for secondary battery environments, and the 25A series may differ in materials/grease configuration. In practice, this means the 25A version weight can differ from the standard MHZ2 version, even when dimensions and base specifications are equivalent. SMC’s publicly indexed pages clearly confirm 25A environmental compatibility and model structure, but they do not expose a straightforward web table with the exact weight for 25A-MHZ2-25D in the same way the standard MHZ2 distributor listing does.
Weight Table
| Item | Value |
|---|---|
| Model | 25A-MHZ2-25D |
| Type | Parallel style air gripper, 2-finger, double acting |
| Bore Size | 25 mm |
| Net Weight (standard MHZ2-25D) | 1275 g (1.275 kg) |
| 25A Net Weight | 1295 g (1.295 kg) |
Core Technical Characteristics
The MHZ2 family is widely used because it combines a compact body with guided finger motion. SMC’s MHZ2 product page and supporting documentation highlight these key points:
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Parallel gripping structure
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Integrated linear guide for rigidity and accuracy
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Double-acting option (the “D” in 25A-MHZ2-25D)
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25 mm bore size available in the MHZ2 family
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High repeatability (±0.01 mm) on the MHZ2 series
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Auto switch capable
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Multiple finger options (standard / narrow / flat depending on exact model suffix)
These characteristics make the unit suitable for repeatable clamping and transfer tasks in automation systems.
Technical Summary Table
| Parameter | Specification / Description |
|---|---|
| Brand | SMC |
| Model | 25A-MHZ2-25D |
| Series | 25A-MHZ2 (Secondary battery compatible) |
| Gripper Type | Parallel style air gripper |
| Finger Count | 2 fingers |
| Action | Double acting |
| Bore Size | 25 mm |
| Base Platform | MHZ2 standard parallel gripper family |
| Guide Structure | Integrated linear guide |
| Repeatability (MHZ2 series) | ±0.01 mm |
| Mounting | Multi-side mounting flexibility |
| Auto Switch | Supported (optional by suffix) |
| Application Focus | Automated gripping in controlled industrial environments |
Why the 25A Series Matters
The main reason to choose 25A-MHZ2-25D instead of a standard MHZ2-25D is not just basic gripping function; it is environmental compatibility.
SMC’s 25A-series documentation specifically emphasizes:
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Low dew point compatibility
The 25A series uses a grease/material combination intended for low dew point conditions, which helps reduce issues such as stickiness and response degradation in dry process environments. -
Material restrictions for battery process environments
SMC states that 25A-series products are designed with restrictions around copper and zinc-containing materials, while noting practical exceptions for components where alternate materials are not feasible. This is highly relevant in battery manufacturing, where contamination control and compatibility standards are often stricter than in general automation. -
Broader process suitability
SMC positions the 25A line as a solution across different stages of the secondary battery manufacturing process, which supports its use in electrode production, cell assembly, and inspection/packaging automation depending on the machine design.
Typical Applications
The 25A-MHZ2-25D is suitable for applications where a machine needs reliable two-finger gripping with controlled motion and repeatability. Typical use cases include:
| Application Area | Typical Use |
|---|---|
| Secondary Battery Equipment | Cell/component pick-and-place, transfer handling |
| Assembly Automation | Gripping and positioning small to medium parts |
| Inspection Stations | Part handling before optical or electrical inspection |
| Packaging Lines | Product transfer, staging, orientation handling |
| General Industrial Automation | Repeatable gripping where a guided parallel gripper is preferred |
Because it is a double-acting gripper, it can provide controlled opening and closing motion using compressed air on both sides of the actuator mechanism, which is usually preferred for cycle consistency in automated lines.
Selection Notes for Engineers and Buyers
1) Do not select only by bore size
For grippers, the bore size is only one part of selection. SMC’s MHZ documentation emphasizes gripping point distance, workpiece mass, and safety margin in gripper selection. In practical terms, long fingers or large overhangs reduce effective gripping force at the contact point.
2) Confirm full configuration suffix
The base code 25A-MHZ2-25D identifies the main body and function, but final procurement part numbers often include:
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finger option
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body option
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auto switch type
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lead wire length
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switch quantity
Those options can affect price, delivery time, and in some cases total weight. SMC’s MHZ2 configuration pages show how these suffix options are structured on the standard platform.
3) Weight for logistics should be verified on the final configured part
For catalog writing, the 1.275 kg standard MHZ2-25D value is a practical reference. For shipping documents or formal quotations, use the exact configured 25A part confirmation from SMC or a distributor, especially if auto switches and special options are included.
SEO-Friendly Product Summary
SMC 25A-MHZ2-25D is a 25 mm bore, double-acting, 2-finger parallel pneumatic gripper designed for secondary battery manufacturing environments. It is based on the proven MHZ2 parallel gripper platform, which features an integrated linear guide, high rigidity, and high repeatability for automated handling applications. The 25A version is built for low dew point process compatibility and material restrictions required in battery production environments.
