Purchase now: Bonfiglioli A 10 2 NH 7 P80 B5 Gearbox
Purchase now: Atlantechdrives provides you the A 10 2 NH 7 P80 B5, an ultra-compact, premium-efficiency orthogonal (right-angle) helical-bevel gear reducer masterfully engineered by the power transmission experts at Bonfiglioli. Belonging to the elite A Series, this specialized micro-gearbox is designed to provide the profound space-saving benefits of a 90-degree fractional drive while delivering the extreme mechanical efficiency (often exceeding 95%) of a precision helical gear train. This specific unit features the smallest physical frame size in the high-performance series (Size 10) but utilizes a 2-stage reduction design to achieve a blazing fast 7:1 reduction ratio. Its absolute standout feature is the «NH» (Hollow shaft with Shrink Disc) output configuration, which provides a premium, completely backlash-free frictional connection to your driven machine. Designed to accept a standard IEC P80 electric motor via a large B5 mounting flange, it is the ultimate transmission choice for ultra-fast packaging lines, high-speed sorting conveyors, robotic end-effectors, and dynamic automated test equipment where energy conservation and zero mechanical slop are strictly required.
Technical Specifications of the A 10 2 NH 7 P80 B5
The A 10 series utilizes a highly rigid, ultra-lightweight unibody housing that maintains absolute internal bevel gear alignment even under continuous high-speed shock loads. The internal helical and bevel gears are case-hardened and precision-profiled for virtually silent, continuous 24/7 high-velocity operations.
- Part Number: A 10 2 NH 7 P80 B5
- Gearbox Series: A (Orthogonal Helical-Bevel Reducer)
- Frame Size: 10 (Ultra-compact fractional design)
- Number of Stages: 2 (Dual reduction gearing)
- Reduction Ratio (i): 7:1 (Ultra-fast output speed)
- Output Configuration: NH (Hollow shaft with keyless Shrink Disc)
- Motor Interface: IEC P80 frame
- Motor Flange Type: B5 (Large standard mounting flange)
Expert Installation Advice: Strict Shrink Disc Protocols
The NH shrink disc output is a massive engineering advantage over standard keyed shafts, providing a 360-degree frictional clamping force that eliminates mechanical backlash entirely—a critical feature for high-speed precision robotics. However, it requires absolute precision during installation. Expert Tip: The golden rule of shrink disc installation is strict friction management. You must absolutely never lubricate, oil, or apply anti-seize paste to the internal bore of the gearbox or the surface of your driven machine’s solid shaft where the clamping force is applied. If oil or grease is present on these mating surfaces, the coefficient of friction drops to near zero. Because of the extreme speed of the 7:1 ratio, the machine shaft will slip violently inside the gearbox under torque load, instantly scoring and destroying both the shaft and the gearbox bore. Thoroughly clean the machine shaft with an industrial degreaser before tightening the micro shrink disc bolts evenly with a calibrated torque wrench in a slow, circular pattern.
Maintenance: Torque Arm Anchoring and Total Reversibility
Because the A 10 is a shaft-mounted gearbox (suspended directly on the driven machine shaft via the shrink disc), the entire gearbox housing will forcefully attempt to spin around the shaft when the heavy P80 electric motor engages. You must safely anchor the gearbox to the machine frame using a torque arm (reaction arm) equipped with rubber vibration-dampening bushings. Additionally, automation engineers must understand that a highly efficient 7:1 helical-bevel gearbox is completely dynamically reversible. It offers absolutely zero resistance to back-driving. If your application involves sudden, precise positional stops or holding a load, you must install an external failsafe electromechanical brake on your AC motor.
Frequently Asked Questions (FAQs)
Q: What are the main benefits of the NH shrink disc over a standard keyed hollow shaft?
A: A standard keyway concentrates all the rotational torque on a single tiny piece of steel, which can wallow out and create mechanical backlash over time—disastrous for high-speed precision positioning. A shrink disc clamps around the entire circumference of the shaft, distributing the torque evenly, eliminating backlash entirely, and preventing the shaft from getting stuck over the years.
Q: Why choose the A 10 Helical-Bevel instead of a similarly sized worm gear for a 7:1 ratio?
A: An ultra-fast 7:1 worm gear generates massive sliding friction, converting electrical energy into wasted heat. The A 10 transfers torque through the rolling contact of precision-ground gears, meaning it consumes significantly less electrical amperage, runs drastically cooler, and provides a much longer lifespan without bronze wheel wear.
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When constructing multi-axis material handling setups, this high-performance bevel unit can be synchronized with the W 63 U 30 P71 B14 B3 universal worm gear reducer for optimal load distribution.
