Electric motors and generators are the prime drivers of all machinery. Any failure in these, can lead to costly downtime. Proactive maintenance can minimize the risk of such unscheduled breakdowns and increase service life of the motor driven equipment.
Housing and End Plates
Challenge 1: Loosening of End Plates
Vibration and shock loads can lead to loosening of the through bolts that keep end covers bolted to the housing. This can lead to misalignment and can cause damage to the motor.
Solution: Secure end cover through bolts with LOCTITE 222 Threadlocker
Challenge 2: Loosening of Assembly Screws and Cover Screws
The threaded assemblies can work themselves loose under dynamic loads. This can lead to excessive vibration in the machine and can damage the housing and frame.
Solution: Lock assembly and cover screws with LOCTITE 243 Threadlocker
Challenge 3: Ingression of Moisture and Foreign Particles
The interface between end plates and the housing allow foreign particles to enter the motor housing which can significantly reduce the motor performance.
Solution: Seal the end plate and housing interface with LOCTITE 518 Flange Sealant
Shaft Mountings
Challenge 1: Loosening of Bearing or Commutator
Electric motors pick up the required rotational speed with a jerk. This repeated jerk can lead to loosening of the shaft mounted component like bearing and commutator. Loosening of cylindrical fittings can reduce transmitted torque and damage the components.
Solution: Mount cylindrical components with LOCTITE 641 Retaining Compound
Challenge 2: Fretting Corrosion on Bearing
The air gap trapped between the bearing and shaft allows corrosion to build up and seize the bearing on the shaft. In such cases, the bearing will have to be replaced with a new one, resulting in downtime and scrap cost.
Solution: Fit bearings on shaft with LOCTITE 641 Bearing Retainer
Mounting Bolt
Challenge: Misalignment Due to Loose Mounting Bolts
Motor mounting bolts keep the motor frame in place and maintain alignment with the driven equipment. However, the mounting motor bolts can loose clamp loads under vibrational shocks and cause misalignment which can damage the rotational components.
Solution: Fasten mounting bolts with LOCTITE 277 Threadlockers
Most industrial centrifugal pumps carry a significant capital equipment value. It is important to extend their service lives and ensure that they run efficiently. Proactive maintenance can reduce the risk of breakdowns and increase pump reliability and longevity.
Bearing Frame & Housing
Challenge 1: Oil Leaks from Threaded Assemblies
The gaps between threads of drain plugs, oiler nipples, fittings etc. can lead to oil leaks due to constant pressure changes within the bearing housing. Not only do these leaks increase costs but also lead to the seizure of fittings and safety hazards.
Solution: Seal threaded assemblies with LOCTITE 567 Thread Sealant
Challenge 2: Bearing Spinout, Corrosion and Component Damage
Bearings are prone to spinning either on their shafts, or within their housings, resulting in damage to these parts regardless of whether they have been pressed, shrunk or slip fitted in place. The gap that exists between a bearing and shaft is an area where rust can form and cause damage to the parts.
Solution: Fit and seal bearings with LOCTITE 641 Bearing Retainer
Frame Adapter
Challenge 1: Gasket Failure between Bearing Frame and Frame Adapter
Leaks from the frame connection can mean money lost in oil consumption and potential safety hazards. This happens because pre-cut gaskets cannot tackle the gap between flange surfaces. Flange imperfections are potential leak paths that pre-cut gaskets cannot seal and they relax over time to make the gaps large enough for leaks to happen.
Solution: Seal flanges with LOCTITE 518 Flange Sealant
Challenge 2: Fastener Loosening and Corrosion to Frame Adapter Mounting Bolts
Bolts are always under strain caused by torque, vibration, shock, thermal expansion and contraction. The gaps between the engaging nuts and bolts allow these external factors to challenge the clamp load.
Solution: Lock and seal bolts with LOCTITE 243 Threadlocker
Pump Casing
Challenge: Corrosion and Seizure of Pump Casing Bolts
The severe pump environments of constant temperature, pressure and humidity changes cause the pump casing bolts to corrode and seize. Seized casing bolts make pump maintenance difficult and create additional labor associated with drilling and tapping the bolt hole.
Solution: Seal and Protect Bolts with LOCTITE 243 Threadlocker
Challenge: Leaks between the Stuffing Box and Casing
The use of cut gaskets has inherent problems. Neither does it occupy all flange irregularities, nor does it maintain elasticity. This leads to creation of leak paths that corrode and damage the flange surfaces.
Solution: Seal flanges with LOCTITE 518 Flange Sealants
Coupling
Challenge: Misalignment and Damage Due to Coupling Loosening
Couplings are held in place by a key and a set screw. If the set screw loosens, the coupling can begin to slide along the shaft and disengage, or it can begin to wallow out the keyway.
Solution 1: Lock set screws in place with LOCTITE 222 Threadlocker (for > ¼")
Solution 2: Lock set screws in place with LOCTITE 243 Threadlocker (for > ¼")
Pump Base Mounting
Challenge: Misalignment Due to Loose Mounting Bolts
Vibration and possible impact shock can work to loosen the mounting bolts. Loose bolts result in a loss of clamp load, which allows the pump to lose its level and aligned configuration.
Solutions: Maintain alignment by securing mounting bolt with LOCTITE 263 Threadlocker
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
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
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
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
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 torque transmitted.
Solution: Fit gears on shaft with LOCTITE 638 Retaining Compound
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
LOCTITE® 222 is a low-strength threadlocker that is ideal for low-strength metals, which could fracture during disassembly, e.g. aluminum or brass. Some common applications include adjustment of screws including countersunk head screws and setscrews, on collars, pulleys, tool holders and controllers.
- Low Strength
- Thread Size upto M6
- 150oC Service Temperature
- Works on all metal substrates
- Oil tolerant
Threadlocking Adhesive - medium strength. General purpose. Suitable for all metal threaded assemblies.
LOCTITE® 243 is a general purpose threadlocker of medium strength. This threadlocker secures and seals bolts, nuts and studs to prevent loosening due to vibration in assemblies like pump, motor mounting bolts, gearboxes or presses
- Medium Strength Oil Tolerant
- Thread Sizes M6 to M20
- 180oC Service Temperature
- Works on all metal substrates
LOCTITE® 518 is designed for use on rigid iron, aluminum, and steel flanged mating surfaces. Fills gaps up to 0.25mm and forms a flexible, chemical-resistant seal that will not tear or decay. Typical applications include sealing close fittings on transmissions, motor housings etc.
- Fills Gaps upto 0.25mm
- Better Flexibility
- 150oC Service Temperature
- Ideal for use on rigid metal parts, e.g. cast iron components and pump housings
- High oil resistance
- Excellent water and glycol resistance
LOCTITE® 641 is designed for the bonding of cylindrical fitting parts, particularly where disassembly is required for servicing operations. Ideal for parts that need subsequent dismantling, i.e. retention of bearings on shafts and in housings
- Low Strength Bearing Retainer (1700 Psi)
- Fills Gaps upto 0.15mm
- 150oC Service Temperature
- Prevents loosening and leakage from shock and vibration
LOCTITE® 277 is a red, high strength threadlocking adhesive. Suitable for locking and sealing large bolts and studs.
- High Strength
- Large Bolts >M20
- 150oC Service Temperature
- Oil Tolerant
- Works on All Metal Substrates
- High Viscosity
LOCTITE® 567 is an off-white, high temperature resistant threadsealant. It is best suited for use on coarse metal threads.
- For Coarse Threads
- Max Thread Size – 3”
- 250oC Service Temperature
- Provides instant low-pressure seal
- Works well even on stainless steel and aluminium
- Oil tolerant
LOCTITE® 638 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 0.25 mm. Ideal for use where high dynamic forces or cyclic loading is expected, for eg: shafts, gears, pulleys and cylindrical parts that
- High Strength (4200 Psi)
- Fills Gaps Upto 0.25mm
- 180oC Service Temperature
- High temperature resistance
- High strength on all metals, including passive substrates (e.g. stainless steel)
LOCTITE® 263 is a red high strength threadlocker designed for the permanent locking and sealing of threaded fasteners. Particularly suited for heavy-duty applications such as studs into motor housings where high strength is required.
- High Strength
- Thread Sizes upto M25
- 180oC Service Temperature
- Oil Tolerant
Industrial Manufacturing Maintenance
Industrial equipment manufacturers design and build machines that make other machines and end products.
LOCTITE products help industrial equipment manufacturers in maintaining smooth operations and high productivity of all machines.
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Maintenance of Electric Motors
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Maintenance of Pumps
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Maintenance of Gearbox
Paper and pulp
The harsh environment of the paper and pulp industry leads to a variety of maintenance challenges.
LOCTITE can help in eliminating the challenges and increase the productivity of machines.
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Maintenance of Electric Motors
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Maintenance of Pumps
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Maintenance of Gearbox
Rubber and Plastic
The versatile end products manufactured put immense stress on the processing machinery.
LOCTITE products help the machines run smoothly under extreme working conditions, while maintaining high productivity.
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Maintenance of Electric Motors
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Maintenance of Pumps
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Maintenance of Gearbox
Automotive Components
Auto component manufacturers need to deliver within tight deadlines and comply with strict product and process quality.
LOCTITE solutions help in fast repair and proactive maintenance of machines to ensure plant reliability.
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Maintenance of Electric Motors
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Maintenance of Pumps
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Maintenance of Gearbox
Textiles
In order to keep up with the dynamic industry changes, the process machinery should run without unplanned breakdowns.
LOCTITE solutions help in corrective, preventive and proactive maintenance to ensure process reliability and high productivity.
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Maintenance of Electric Motors
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Maintenance of Pumps
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Maintenance of Gearbox
Food and Beverage
Food and Beverage processing industry needs to comply with stringent regulations. Challenges such as loosening due to vibration, leakages and corrosion, threaten the everyday performance of processing machinery.
LOCTITE products help to combat the above challenges and increase machine reliability.
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Maintenance of Electric Motors
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Maintenance of Pumps
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Maintenance of Gearbox
Electric motor is an integral equipment for plant machinery. LOCTITE solutions help to improve performance and reduce costs by preventing minor issues such as self-loosening of threaded assemblies which can lead to unplanned downtime.
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Frequent pump breakdowns can increase downtime costs and reduce productivity. LOCTITE threadlockers ensure pump reliability and longevity by filling all gaps between engaging threads, preventing self-loosening.
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LOCTITE thread sealants provide instant sealing to prevent leakage of gases and liquids, making threaded industrial pumps reliable and leak-proof.
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Industrial pump reliability highly depends on cylindrical components like shaft and bearing. Proactive maintenance of these essential components can reduce the risk of breakdowns, preventing downtime costs and increasing pump service life.
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A gearbox failure can lead to a costly setback and affect overall plant operations. LOCTITE threadlockers combat common challenges such as loosening, corrosion and seizure of fasteners, ensuring high reliability.
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Leakages in gearbox can lead to reduce equipment life and amount to expensive downtime. LOCTITE gasketing compounds ensure 100% flange seal preventing expensive leaks
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