Technical Description: Panasonic MX8G25B Gearhead
The MX8G25B is a precision parallel shaft gearhead from Panasonic’s high-reliability MX series. Featuring an 80mm square frame and a 25:1 reduction ratio, this component is specifically designed to be paired with 25W and 40W AC compact motors. It is the industry standard for small-to-medium automation tasks, providing the necessary mechanical advantage for labeling machines, document handling systems, and light conveyor synchronization.
High Reliability and Noise Reduction
Construction of the MX8G25B involves precision-ground gears and high-grade ball bearings, ensuring that vibration and acoustic noise are kept to an absolute minimum. The 25:1 ratio provides a significant torque boost while maintaining a smooth output profile. The internal lubrication system is designed for high-cycle industrial duty, ensuring that the gear teeth maintain their profile over years of operation. This «fit and forget» reliability is a hallmark of Panasonic’s small motor division.
Key Characteristics
- Part Number: MX8G25B.
- Frame Size: 80 mm sq.
- Gear Ratio: 25:1.
- Bearing Type: Ball Bearings.
- Compatibility: Panasonic M8 80mm motors (25W/40W).
- Rotation Direction: Reverse of the motor direction.
- Housing: Aluminum die-cast for thermal stability.
- Shaft: 10 mm diameter with keyway.
Operational Efficiency and System Longevity
The MX8G25B is engineered to reduce the mechanical stress on the motor by providing a consistent load profile. Its high transmission efficiency (approx. 81%) ensures that energy consumption remains low. The standardized mounting dimensions facilitate easy integration into a wide variety of machine frames. Its durability is further enhanced by its resistance to localized heat buildup, making it suitable for compact control enclosures.
| Category | Specification |
| Weight | 0.75 kg |
| Permissible Torque | 8.0 N·m (Heavy Duty) |
| Standard Compliance | RoHS Compliant |
Maintenance Insights
The MX8G25B is maintenance-free. For optimal performance, it is recommended to inspect the mounting bolts and shaft coupling every 12 months to ensure no mechanical loosening has occurred due to vibration. Always use the original mounting screws provided with the motor to ensure a flush, secure fit.
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