The FESTO 1310162 DHRS-25-A is a compact radial pneumatic gripper engineered for automated handling tasks that require precise opening motion, stable gripping behavior, and dependable cycle performance. It belongs to FESTO’s DHRS series and is designed as a double-acting, two-jaw radial gripper with proximity-switch-based position detection. In practical automation terms, this means the unit is suitable for equipment that needs consistent gripping and release movement in assembly, pick-and-place, transfer, and positioning applications. FESTO also lists this model as a gripper that can be used for external or internal gripping tasks within the DHRS product family.
One of the main advantages of the DHRS-25-A is that it combines a relatively compact body with a useful gripping output for medium-duty automation stations. The official FESTO datasheet identifies this unit as size 25, with a maximum opening angle of 180 degrees, two gripper jaws, and double-acting operation. The same datasheet gives a product weight of 270 g, which is an important selection point for machine builders trying to keep tooling mass under control while still maintaining sufficient gripping torque and stable jaw movement.
The table below summarizes the key technical data for FESTO DHRS-25-A, part number 1310162, based on FESTO’s official datasheet.
| Item | Value |
|---|---|
| Brand | FESTO |
| Part Number | 1310162 |
| Model | DHRS-25-A |
| Product Type | Radial gripper |
| Size | 25 |
| Number of Gripper Jaws | 2 |
| Operating Principle | Double-acting |
| Gripper Function | Radial |
| Position Detection | Via proximity switch |
| Maximum Opening Angle | 180 deg |
| Maximum Replacement Accuracy | 0.2 mm |
| Repetition Accuracy, Gripper | 0.1 mm |
| Operating Pressure | 2 bar to 8 bar |
| Maximum Operating Frequency | 3 Hz |
| Minimum Opening Time at 6 bar | 102 ms |
| Minimum Closing Time at 6 bar | 105 ms |
| Total Gripping Torque at 6 bar, Opening | 233 Ncm |
| Total Gripper Torque at 6 bar, Closing | 215 Ncm |
| Mass Moment of Inertia | 0.69 kgcm² |
| Maximum Force on Gripper Jaw Fz Static | 75 N |
| Maximum Torque at Gripper Mx Static | 3.2 Nm |
| Maximum Torque at Gripper My Static | 3.2 Nm |
| Maximum Torque at Gripper Mz Static | 3.2 Nm |
| Pneumatic Connection | M5 |
| Ambient Temperature | 5 °C to 60 °C |
| Product Net Weight | 270 g |
| Housing Material | Hard anodised wrought aluminium alloy |
| Gripper Jaw Material | High-alloy steel |
| Cover Cap Material | PA |
| Mounting Type | Via female thread and centring sleeve, or via through-hole and centring sleeve |
| Operating Medium | Compressed air to ISO 8573-1:2010 [7:4:4] |
| Compliance Notes | RoHS-compliant, LABS conformity, low corrosion stress class CRC 1 |
From an application perspective, the DHRS-25-A is well suited to automated systems where the workpiece must be gripped through a radial jaw motion rather than the parallel motion used by standard parallel grippers. That distinction matters in equipment design. Radial grippers are often chosen when the gripping geometry, machine layout, or part shape makes pivoting jaw motion more effective for loading, unloading, centering, or releasing a component. Because FESTO specifies a 180-degree maximum opening angle, this model offers generous jaw travel for part access and integration flexibility in compact stations.
Accuracy is another strong point of this product. FESTO states a maximum replacement accuracy of 0.2 mm and a gripper repetition accuracy of 0.1 mm. Those values are highly relevant in repetitive industrial processes where a gripper must return to a predictable position over many cycles. In automated handling, even a small variation at the jaw can affect pick reliability, transfer consistency, or downstream positioning. For that reason, the DHRS-25-A is a sensible option for machine builders who want a pneumatic gripper with controlled repeatability but without moving into a more complex electric gripper platform.
The gripping performance of the unit is also clearly defined. At 6 bar, FESTO specifies 233 Ncm total gripping torque during opening and 215 Ncm total gripper torque during closing. These figures give integrators a practical basis for evaluating whether the gripper can handle the required part geometry, jaw design, and gripping conditions. The datasheet also lists a mass moment of inertia of 0.69 kgcm², which helps engineers judge how the gripper will behave in dynamic motion and how additional jaw mass or tooling might influence performance. In real machine design, these are not minor details. They affect cycle time, jaw sizing, reliability, and long-term wear.
Speed and cycle behavior are equally important in automated production, and here the DHRS-25-A offers a practical operating profile. FESTO gives a maximum operating frequency of 3 Hz, along with a minimum opening time of 102 ms and a minimum closing time of 105 ms at 0.6 MPa / 6 bar. This indicates that the gripper is suitable for moderate-to-fast repetitive handling tasks, provided the jaw design and payload remain within specification. In assembly equipment, packaging automation, and material transfer stations, this level of response can support stable operation without sacrificing the robustness that pneumatic grippers are known for.
Another important benefit is installation flexibility. FESTO specifies that the gripper can be mounted either via female thread and centring sleeve or via through-hole and centring sleeve, and the general mounting position is not restricted in the standard data. This gives machine designers more freedom when arranging the actuator inside compact tooling zones. The M5 pneumatic connection also reflects a practical interface size for a gripper of this class. In many OEM and retrofit projects, these mounting and connection details determine how quickly a component can be integrated and how easily it can be replaced later during maintenance.
Material construction also supports industrial use. FESTO lists a hard anodised wrought aluminium alloy housing, high-alloy steel gripper jaws, and a PA cover cap. This combination is appropriate for a pneumatic handling device that needs low body weight, structural stability, and wear resistance at the gripping interface. The official datasheet further identifies the product as RoHS-compliant, with LABS conformity according to VDMA24364-B2-L, and assigns corrosion resistance class CRC 1, which FESTO describes as low corrosion stress. These specifications are useful when evaluating the product for general factory automation or for installations where materials and environmental compatibility matter.
The air supply requirements are also straightforward. FESTO specifies compressed air to ISO 8573-1:2010 [7:4:4] as the operating medium, and notes that lubricated operation is possible, but once lubrication is used, it must be continued. That is a standard but important maintenance consideration. Consistent air quality and a stable lubrication policy help preserve seal life and motion consistency. In practice, this means the DHRS-25-A should be used within a properly prepared pneumatic system rather than being treated as a stand-alone mechanical part. Good air preparation is directly linked to service life and predictable gripping behavior.
The 270 g product weight deserves separate attention because it affects more than shipping data. In automation design, the mass of the gripper influences robot wrist loading, gantry payload, bracket stiffness, and the dynamic response of the full handling unit. A gripper that is too heavy can limit cycle speed or require a larger actuator upstream. A gripper that is too light but underpowered can fail to maintain secure handling. The DHRS-25-A sits in a practical middle range for compact industrial gripping: light enough for flexible integration, yet substantial enough to deliver the torque and rigidity needed for many standard automation tasks.
Overall, the FESTO 1310162 DHRS-25-A is best described as a compact radial pneumatic gripper for precise, repeatable industrial handling. Its official combination of 180-degree opening angle, double-acting two-jaw design, 0.1 mm repetition accuracy, 3 Hz operating capability, and 270 g weight makes it a strong choice for machine builders who need reliable gripping performance in a controlled pneumatic system. For applications involving automated loading, unloading, transfer, positioning, or part manipulation, this model offers a practical balance of compactness, speed, repeatability, and installation flexibility.
