The self-aligning roller bearings used in elevators, with their characteristics of automatic centering, high radial bearing capacity, and resistance to impact and vibration, are mainly suitable for heavy-duty and frequent start stop working conditions of elevators. They are mainly used in the following key positions:
🏋️ The core support of the traction machine spindle is the most essential application scenario for elevator self-aligning roller bearings.
The rotor shaft of a heavy-duty permanent magnet synchronous gearless traction machine usually adopts a configuration of one self-aligning roller bearing and one deep groove ball bearing at both ends. The self-aligning roller bearing bears the majority of the radial load and can compensate for the misalignment between the shaft and the bearing seat during installation, avoiding eccentric wear.
. The traction wheel end of the cantilever steel belt traction machine directly adopts self sealing self-aligning roller bearings, which are adapted to the alternating impact load of steel belt transmission and have lower operating noise.The rotor shaft of low-temperature resistant traction machines in high-altitude regions is equipped with insulated self-aligning roller bearings at both ends, which can operate stably in a low temperature environment of -40 ℃ and avoid erosion of the bearing raceway by shaft current.
.Elevator specific self-aligning roller bearings that meet the requirements of the mechanical industry standard JB/T 13348, with a design life of not less than 15 years, fully meet the long-term high reliability operation needs of traction machines.
.🛞 Anti rope wheel and guide wheel assembly
The anti rope wheel of the elevator ceiling wheel suspension device is directly equipped with self-aligning roller bearings inside, which have excellent shock absorption and noise reduction effects. It can support a maximum load of 1600kg and a maximum operating speed of 4m/s, greatly reducing steel wire rope wear.
.The guide wheels and counterweight wheels of the heavy-duty cargo elevator are equipped with self-aligning roller bearings that can withstand the large radial load transmitted by the steel wire rope, while compensating for the small angular deviation of the wheel axle installation to avoid wheel rotation jamming.
.🏗️ Heavy duty special elevators are equipped with traction systems for large tonnage freight elevators and car elevators. The high radial bearing capacity of self-aligning roller bearings can easily cope with rated loads of several tons, and their impact resistance is much better than that of ordinary deep groove ball bearings. The main drive shaft support position of the escalator, and some heavy-duty escalators will also use elevator level self-aligning roller bearings to withstand the continuous alternating load caused by dense pedestrian flow, extending the maintenance cycle of the drive system.
🔧 Extended universal adaptation scenarios
In addition to elevator specific scenarios, this type of elevator grade self-aligning roller bearing can also be transferred and applied to other heavy-duty equipment that requires low noise, long life, and high reliability:
Main spindle support for hoisting equipment
Drive drum shaft for mining conveying equipment
Press roller shaft support for papermaking machinery
Low speed heavy-duty transmission shaft for metallurgical industry