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Challenges

Industrial gearboxes play an important role in processing and manufacturing facilities. Reliable operation over a long service life, with minimum maintenance, is a key requirement. Proactive maintenance can minimize expensive downtime, enhance reliability and dramatically cut costs.

Housing 

Housing

Challenge: Damage and Corrosion in Housing due to Bearing Spin

Bearing outer races are prone to spinning within their housings, resulting in damage to the housing. This damage is regardless of whether or not they have been pressed or shrink fitted in place. Once the clearance increases, the air gap leads to fretting corrosion, causing damage to the parts.

Solution: Fit bearing in housing with LOCTITE 641 Retaining Compound

Housing and Cover Assembly 

Housing and Cover Assembly

Challenge 1: Gasket Failure Between Upper and Lower Housing of a Split Gearbox

Oil leakage from failed gasket between upper and lower housings of split case gearbox can increase risk of gearbox running low on oil and increase overall oil consumption, safety hazards and clean-up costs.

Solution: Seal flanges with LOCTITE 518 Gasketing Compound

Challenge 2: Loosening and Corrosion of Housing and Cover Fasteners

Cover fasteners can loosen when exposed to torque, vibration, thermal expansion and shock loads. Once the fasteners become loose, the preload on the gasket is lost and the gasket fails. Additionally, cover fasteners can corrode and seize making gearbox maintenance difficult and hence create additional labour associated with drilling and tapping of the fastener hole.

Solution: Secure cover fasteners with LOCTITE 243 Threadlocker

Lubrication and Cooling System 

Lubrication and Cooling System

Challenge: Leakages from Threaded Fittings

Pressure and temperature changes within the gearbox can lead to leaks from threaded fittings such as oil drain plug, oil inlet, housing ventilation, oil pump, oil filter, oil gauge, coolant pump, pressure and temperature control unit and all pipe work.

Solution: Seal threaded assemblies with LOCTITE 567 Thread Sealant

Shaft Mounted Components 

Shaft Mounted Components

Challenge 1: Spun Bearings on Shaft

Bearings are prone to spinning on the shaft due to dynamic load on the assembly which produces axial loads higher than the original calculations. This bearing spin leads to damage on both shaft and bearing which may necessitate component replacement, causing unplanned downtime and scrap costs.

Solution 1: Fit bearings on shaft with LOCTITE 641 Retaining Compound (gap < 0.15mm)
Solution 2: Fit bearings on shaft with LOCTITE 660 Retaining Compound (gap < 0.5 mm)

Challenge 2: Loosening of Fitted Gears

Gears are prone to loosening on the shaft under dynamic loads, leading to reduction in the transmitted torque.

Solution: Fit gears on shaft with LOCTITE 638 Retaining Compound

Gearbox Mounting Bolt 

Gearbox Mounting Bolt

Challenge: Misalignment Due to Mounting Bolt Loosening

Vibration and shock loads can loosen gearbox and motor mounting bolts, leading to misalignment which can cause damage to both the machines.

Solution: Secure Mounting Bolts with LOCTITE 277 Threadlocker

 
 
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LOCTITE offers solutions tailored to solving industry-specific challenges, which can optimize manufacturing processes and drive down cost

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LOCTITE products help the machines run smoothly under extreme working conditions, while maintaining high productivity.

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LOCTITE solutions help in fast repair and proactive maintenance of machines to ensure plant reliability.

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LOCTITE solutions help in corrective, preventive and proactive maintenance to ensure process reliability and high productivity.

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LOCTITE products help to combat the above challenges and increase machine reliability.

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Email - customer.enquiries@henkel.com

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