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PC gear units are single-stage or multi-stage helical gearboxes built for conveyor systems, packaging machinery, material handling and automation equipment. A die-cast aluminium housing machines in a single setup to keep bearing bores aligned. Case-hardened and precision-ground helical gears run smoothly and hold torque under reversing load. Seven frame sizes from PC-30 to PC-110 cover 0.12–22 kW input power and up to 2000 Nm output torque, with mounting interfaces that follow IEC and DIN standards for direct replacement.
Seven frames cover the full power and torque range. Smaller frames use compact aluminium housings, larger frames use a wider centre distance to hold higher torque. Every frame shares the same housing concept, gear finishing process and lubrication strategy.
PC gear units support four mounting configurations that follow IEC and DIN standards, so the unit can replace an existing gearbox without changing the machine plate or the coupling.
Base-mounted horizontal output. Standard for conveyors, mixers and general industrial drives on a flat machine bed.
Large output flange that bolts directly to the driven hub. Used when the gearbox must sit close to the load.
Compact flange on the output side for smaller loads. Ideal for confined installation space and weight-sensitive axes.
Combination of foot and flange for higher mounting rigidity under shock or reversing load. Standard for heavy conveyors.
These six design points are what separate a PC helical gearbox from a low-cost unit that loses alignment after a few months on a reversing axis.
Die-cast aluminium alloy housing is produced on horizontal machining centres in a single operation. This keeps the bearing bore, the shaft seat and the mounting face concentric, which protects the gear mesh over a long service life.
Gears use high-grade alloy steel, case-hardened and finished on precision gear grinding machines. Hard-facing gives high wear resistance, and the ground tooth profile keeps backlash stable across the full life of the gearbox.
Helical teeth engage progressively rather than at a single point. Torque is shared across several teeth in mesh, so vibration is reduced, noise is lower and the mesh stays stable under reversing load.
The combination of helical gears and a die-cast aluminium housing delivers high output torque in a compact envelope. This saves machine space, especially on packaging and material-handling equipment where the drive sits inside the frame.
PC units use oil-bath lubrication with double-lip seals on the input and output shafts. Oil-bath lubrication keeps the mesh cool under continuous duty and supports long service intervals, while the seals keep dust and water out of the housing.
Aluminium alloy gives natural corrosion resistance without painting. This makes PC gear units suitable for humid, washdown and outdoor installations, and for food-processing equipment when paired with a food-grade lubricant option.
Typical specifications for the standard PC range. Custom ratios, shaft dimensions and mounting arrangements are available on request.
Mounting, input, output and accessory options that let PC gear units fit an existing machine layout.
PC gear units are used wherever an industrial drive needs high torque, smooth running and a compact footprint.
Belt, roller and screw conveyors in logistics, warehousing and manufacturing lines.
Filling, capping, labelling and cartoning equipment with fast cycle starts and stops.
Hoists, winches, elevators and automated guided vehicles with frequent reversing load.
Mixers, dough kneaders and slicers, with food-grade lubricant options available.
Positioning tables, indexing drives and robotic systems in the general industrial sector.
Sliding gates, rolling shutters and barrier mechanisms where the drive must hold position under load.
Every PC gear unit is inspected for gear geometry, hardness, backlash, leak tightness and noise/vibration before packing. Material certificates and third-party inspection are available on request.
ISO 9001:2015 certified quality management from raw material to final assembly. Products comply with DIN and AGMA gear standards.
Common questions about ratios, mounting, input speed and customisation.
Provide input power, output torque, required ratio, mounting configuration, output shaft type and driven machine description. Raydafon will confirm the correct PC frame and configuration, and reply with a factory-direct quotation within 24 hours.
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Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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