Purchase now: Bonfiglioli A 10 2 UH 20 P71 B14 Gearbox
Purchase now: Atlantechdrives provides you the A 10 2 UH 20 P71 B14, an ultra-compact, highly efficient orthogonal (right-angle) helical-bevel gear reducer masterfully engineered by the power transmission experts at Bonfiglioli. Belonging to the elite A Series, this gearbox is specifically designed to provide the space-saving benefits of a 90-degree worm drive while delivering the extreme mechanical efficiency (often exceeding 95%) of a helical gear train. This specific unit features the smallest frame size in the series (Size 10) but utilizes a robust 2-stage reduction design to achieve a precise 20:1 reduction ratio. Its standout physical feature is the «UH» (Universal Hollow) output shaft with a standard keyway, which allows the entire gearbox to slide directly onto your driven machine’s solid shaft, saving an enormous amount of mounting space. Designed to accept a fractional IEC P71 electric motor via a compact B14 face-mount flange, it is the absolute optimal power transmission choice for small automated conveyors, precision packaging machines, and compact rotary tables where energy conservation is critical.
Technical Specifications of the A 10 2 UH 20 P71 B14
The A 10 series utilizes a highly rigid unibody aluminum housing that maintains absolute internal bevel gear alignment even under continuous radial and axial shock loads. The helical and bevel gears are case-hardened and precision-profiled for virtually silent, continuous 24/7 operation.
- Part Number: A 10 2 UH 20 P71 B14
- Gearbox Series: A (Orthogonal Helical-Bevel Reducer)
- Frame Size: 10 (Ultra-compact, lightweight aluminum)
- Number of Stages: 2 (Dual reduction gearing)
- Reduction Ratio (i): 20:1 (Mid-range output speed)
- Output Configuration: UH (Universal Hollow shaft with standard keyway)
- Motor Interface: IEC P71 frame
- Motor Flange Type: B14 (Compact face mount)
Expert Installation Advice: Hollow Shaft Tolerances and Anchoring
Shaft-mounting an orthogonal gearbox requires strict adherence to mechanical tolerances. Expert Tip: When sliding the A 10’s hollow bore onto the solid steel shaft of your driven machine, dimensional tolerance is paramount. Ensure your machine shaft is machined to the correct ISO tolerance (typically h6 or j6). Furthermore, you must thoroughly coat the machine shaft and the internal keyway of the gearbox with a high-quality Molybdenum Disulfide (MoS2) anti-seize assembly paste before installation. Without this heavy paste, microscopic vibrations will cause fretting corrosion, permanently cold-welding the gearbox to your machine shaft. Because the gearbox is suspended on the shaft, its entire housing will attempt to rotate when the motor engages. You must anchor the gearbox to the machine frame using a torque arm equipped with rubber vibration-dampening bushings.
Maintenance: Helical-Bevel vs. Worm Gear Efficiency
Many engineers wonder why they should invest in a Helical-Bevel gearbox instead of a cheaper worm gear for a 20:1 ratio. The answer is long-term operational cost. Worm gears rely heavily on sliding friction, which generates massive amounts of radiant heat and electrical energy loss. The A 10 transfers torque through the rolling contact of its precision-ground helical and bevel gears. This means it consumes significantly less electrical amperage to perform the exact same mechanical work, runs drastically cooler, and essentially eliminates the bronze gear wear associated with standard worm reducers.
Frequently Asked Questions (FAQs)
Q: What does the B14 motor flange mean for the P71 input?
A: The B14 is a «face-mount» design where the mounting bolts pass directly through the gearbox casting and thread into the face of the electric motor. This significantly reduces the outer radial footprint of the assembly compared to a massive B5 flange, making it perfect for extremely tight machine guards.
Q: Is the A 10 gearbox dynamically reversible?
A: Yes. Because of the extreme mechanical efficiency of the helical-bevel architecture, this gearbox offers absolutely no resistance to back-driving. It will not act as a mechanical brake. You must install a motor brake if holding a load is required.
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