Purchase now: Bonfiglioli C 22 2 P 12.5 P90 B5 Helical Gearbox
Purchase now: Atlantechdrives provides you the C 22 2 P 12.5 P90 B5, a premium, high-efficiency inline helical gearmotor assembly from Bonfiglioli’s renowned C series. While worm gears are excellent for 90-degree applications, helical gears offer vastly superior mechanical efficiency (often exceeding 95%). This means more of your electrical motor power is translated directly into turning torque rather than being lost as heat. The C 22 size is engineered with a 2-stage reduction, achieving a precise 12.5:1 ratio. Designed to accept a robust IEC P90 motor with a B5 flange, this coaxial gearbox is the ultimate power transmission solution for high-duty-cycle applications such as continuous fluid pumps, heavy-duty agitators, and long linear conveyors where energy efficiency and low operating temperatures are critical.
Technical Specifications of the C 22 2 P 12.5 P90 B5
The C series features a highly rigid, unibody cast-iron housing that keeps the internal gears perfectly aligned even under severe shock loads. The helical gears are case-hardened and profile-ground to ensure incredibly quiet operation.
- Part Number: C 22 2 P 12.5 P90 B5
- Gearbox Series: C (Inline Coaxial Helical)
- Frame Size: 22
- Number of Stages: 2 (Dual reduction gearing)
- Reduction Ratio (i): 12.5:1
- Motor Interface: IEC P90 frame
- Motor Flange Type: B5 (Large standard flange)
- Efficiency: Highly efficient helical tooth profile
Expert Installation Advice: Fretting Corrosion on Input Shafts
Connecting an electric motor to an inline helical gearbox requires strict mechanical hygiene. Expert Tip: When installing your IEC P90 motor into the B5 input flange of the C 22 gearbox, you are inserting a steel motor shaft into a steel input hub. During thousands of hours of continuous vibration and micro-movements, a phenomenon known as «fretting corrosion» occurs. This creates a rust-like powder that essentially cold-welds the motor shaft to the gearbox bore. Years later, when the motor inevitably burns out, it will be impossible to separate the motor from the gearbox without destroying both. To prevent this, you must apply a high-quality anti-seize compound or molybdenum disulfide assembly paste to the motor shaft and the internal keyway before sliding the motor into the C 22 input hub.
Maintenance and Oil Top-Offs
Unlike standard worm gears, multi-stage inline helical gears are subjected to different internal splash dynamics. Ensure the gearbox is mounted securely to a flat, machined baseplate to prevent twisting the unibody housing, which can cause micro-misalignments in the gear meshing. If your specific C 22 model features an oil sight glass (depending on the requested mounting position), check it monthly. If you must top off the oil, never mix synthetic and mineral oils. Mixing lubrication bases causes a severe chemical reaction that creates a thick sludge, instantly starving the input bearings of lubrication and leading to rapid gearbox failure. Always consult the Bonfiglioli manual for the exact ISO VG oil grade required.
Frequently Asked Questions (FAQs)
Q: What does the «2» mean in the part number C 22 2?
A: The «2» indicates that this gearbox has 2 internal reduction stages (two sets of mating gears). This allows it to achieve the 12.5:1 ratio smoothly. Ratios above 50:1 typically require a 3-stage or 4-stage configuration.
Q: Why choose an inline helical gearbox over a worm gearbox?
A: Helical gearboxes offer significantly higher energy efficiency, produce less heat, and do not suffer from the sliding friction wear inherent to worm gears. They are ideal for applications running 24/7 where electricity costs and long-term durability are paramount.
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