Bonfiglioli Transmission and Automation Product Selection Reference

HDP is a parallel axis structure with a torque of 5000~21000 Nm; HDO is a right angle bevel gear helical gear structure with a torque of 28200~21000 Nm. Both use ductile iron housings and the gears undergo high-precision grinding.

Typical applications of HDP: belt conveyors, bucket elevators, and building materials machinery.

Typical applications of HDO: agitator, paper machine, steel rolling auxiliary transmission.

Common selection points: All options include backstop to prevent the inclined conveyor belt from reversing, forced lubrication system, oil temperature/level sensor, Drywell seal, and Taconic high-temperature resistant seal to adapt to extreme environments.

7. TA series - shaft mounted reducer (special heavy-duty)

The TA series is a shaft mounted reducer designed for harsh environments in mines and quarries, with a torque range of 150-16000 Nm (under 900 min ⁻¹ conditions). The housing is made of sturdy cast iron and is suitable for outdoor installation. The backstop is a standard option and can be directly inspected externally.

Engineering advantages: With a simple structure and low maintenance workload, it is an ideal choice to replace large chain or belt drives.

8. RAN Series - Cone Gear Steering Box

It has been detailed in the second article of this series and will not be repeated here.

Specialized solutions for special environments

1. EP series - corrosion-resistant/sanitary grade worm gear motor

This series is fully anti-corrosion treated on the basis of VF/W worm gear, including stainless steel hollow shaft, stainless steel fasteners, oil seal with stainless steel spring, sealed (no ventilation) box, IP56 motor protection level, and optional FDA certified grease (H1 level) and washable seal.

Application areas: food processing, pharmaceuticals, chemicals, and marine ship deck equipment.

Engineering precautions: EP configuration is suitable for VF44~VF110 and BN63~BN112 motor specifications. During installation, ensure that all unused screw holes are closed with plugs to prevent hygiene blind spots.

2. ATEX series - explosion-proof gearbox

ATEX certification covers the C series, A series, F series, VF/W series, and 300 series, suitable for 2G/2D explosive environments (gases and dust).

Certification basis: European Directive 94/9/CE (ATEX), specific specifications can refer to the torque range list on page 19.

Deployment suggestion: When selecting, complete area classification (Zone 1/2 or 21/22), gas group (IIA/IIB/IIC), and temperature level (T1~T6) must be provided, and the manufacturer can determine the sealing, grounding, and anti-static configuration based on this.

3. 3/H series - planetary bevel gear combination box

This product connects the 300 series star rating and HDO series bevel gear helical gear stages in series, with an output torque of up to 98000~120000 Nm, a speed ratio of 1:100~1:1000, and a maximum power of 980 kW. It is mainly designed for extremely harsh working conditions with low-speed heavy loads and right angle inputs.

Typical applications: large grinding machines, rotary kilns, ship propellers.

Key selection points: A detailed load spectrum (torque speed time curve) is required to verify the heat capacity and lubrication method (forced or oil bath).

4. HDPE series - extruder specific gearbox

A dedicated housing for single screw extruders based on the HDP platform, with a torque of 4650~75000 Nm and a speed ratio of 7.1~125. The core feature is heavy-duty thrust bearings (294... E series), specifically designed to withstand axial thrust from screws. The output hollow shaft can be customized according to customer specifications.

Key points of the project: The input end can be directly installed with a motor (with a coupling bell cover) or an independent input shaft, and the cooling system (cooling coil or independent cooling unit) is a necessary option.

Selection and classification of precision planetary gearboxes (servo grade)

Bonfiglioli's precision planetary product line is divided into multiple levels based on accuracy, torque, and installation form. Engineers should choose the appropriate series according to control accuracy requirements and space limitations.

Series torque range (Nm), maximum acceleration torque (Nm), backlash (arcmin), structural form, typical applications

LC 12~450 20~700<12 (standard)/<6 (low) inline universal servo positioning

LCK 10~450 20~700<12/<6 right angle compact space right angle transmission

MP 20~1000 30~1200<15/<10 Straight/Right Angle/Hollow Axis Medium High Dynamic Positioning

TR 20~1000 30~1200<5/<3 High precision positioning for inline/right angle/hollow axis

SL 25~155 35~300<12/<6 inline (with optional pulley) synchronous belt conveyor servo

KR 3~120 14~170<8 right angle (hollow/solid shaft) small right angle steering

TQ 30~800 45~1200<4/<2 Straight (square flange) high dynamic rigidity

TQK 30~800 45~1200<5/<4 right angle (square flange) compact high rigidity

Key points of selection project:

Back clearance selection: For point control (such as picking and placing, machine tool changing), a back clearance of ≤ 3 arcmin (TR series) can achieve the best repeat positioning accuracy; For regular speed control, standard backlash is sufficient.