Strengthens Assembly, Prevents Moisture Ingress

Train bogie wheels are assembled utilising a heavy interference fit of 0.001” per inch of axle diameter, (typically 0.009” for a 9” diameter shaft). In addition, press-on tonnage of between 65-110 tonnes must be achieved and documented to ensure optimal assembly strength.
This can be an extremely difficult task, and the consequences of poor assembly can be expensive or even catastrophic. Therefore if metal pick-up occurs during assembly, the components will be scrapped, and if the tonnage is not achieved within specification, the wheel and axle must be separated and re-matched.

Reduces Field Complaints

A leading manufacturer of small domestic appliances was using star washers to lock the yellow passivated M4 screw of top lid handle of domestic pressure cookers they were making. They had several field complaints of handle loosening over the usage period as the star washer not only failed to retain the clamp load but also was unable to accommodate difference in thermal expansion between dissimilar materials.

Augments Strength and Adds Reliability

Mehala Machines is a manufacturer of garment sewing machines in India. Mehala’s High-speed Integral Clutch Motors used in Sewing Machines had their rotors (silicone steel) fixed to shaft (En8) with interference press fits. The interference press fits hold the assembled parts together with friction and are expected to have high load bearing capability, however Mehala was receiving field complaints of rotor spin offs. When parts are assembled with the contact area is still limited to the high ‘peaks’ and ‘valleys’ on the mating surfaces and is typically less than 30 – 40% - due the load on mated parts and micro-movements these peaks and valleys are grinded off and the gaps increases resulting the spin-offs.

Outperforms PTFE Tapes & Copper Washer
A leading manufacturer of CNC machines used PTFE tapes to seal the threaded joints at the oil filter inlet and outlet manifold. But the PTFE tapes shredded while assembling, some of these shreds get into the system and the customer was receiving field complaints of oil filter being blocked with shreds of PTFE tapes. Loctite 542 anaerobic thread sealant designed to seal fine threads was recommended for this application. It gave 100% sealing of threads - filling the thread imperfections and gaps and creating a leak proof joint thus creating additional savings in costs.

Loctite Corporation has been a partner in design with Arctic Cat since the beginning for their line of snowmobiles and personal watercraft. When they began to design their 1999 line of snowmobiles they naturally called Loctite in to be a part of the team. Loctite brought extensive experience to the table and recommended the right products for each application, such as Loctite® 242® Removable Threadlocker, Loctite® 290 Wicking Grade Threadlocker, Loctite® RC™ 609 and RC™ 620, Black Max®380 and Super Lube®. From the drive clutch to brake caliper bolts to the starter assembly, its products are used throughout the snowmobile to protect against vibration loosening and temperature extremes.