RE Series Crossed Roller Bearings

The RE series crossed roller bearings are also one of the fundamental types of crossed roller bearings. Their unique design endows them with exceptionally high rigidity, superior rotational accuracy, and robust load-carrying capacity.

The RE series crossed roller bearings are also one of the fundamental types of crossed roller bearings. Their unique design provides exceptionally high rigidity, excellent rotational accuracy, and robust load-carrying capacity. The RE series is ideally suited for applications such as the joint and rotary components of industrial robots, medical devices, testing instruments, and high-precision rotary tables.

I. Methods for Maintaining RE-Series Crossed Roller Bearings

1. Cleaning and Rust Prevention

To extend the service life of RE-series crossed roller bearings, it is necessary to remove and clean them periodically after use. Before cleaning, record their external condition and the state of the lubricant, then proceed with cleaning. The cleaning process consists of two steps: rough cleaning and fine cleaning. Rough cleaning involves using a brush to remove any adhering contaminants or grease from the bearing while slowly rotating it. Fine cleaning entails carefully washing the bearing with a neutral, water-free diesel or kerosene, or with a mild alkaline solution. After cleaning, apply a rust‑preventive oil to the bearing as soon as possible to prevent corrosion.

2. Inspection and Diagnosis

When maintaining RE-series crossed roller bearings, regularly inspect the removed bearings to assess their rotational accuracy, dimensional accuracy, and the condition of the raceway surfaces, cage, seals, and other components. It is advisable to have a qualified technician evaluate the inspection results, as mechanical performance, criticality, and inspection intervals may warrant different evaluation criteria. If any component of the crossed roller bearing exhibits fractures or defects, or if spalling occurs on the raceway or rolling elements, these conditions indicate damage and the bearing must not be reused; it should be replaced with a new unit as soon as possible.

II. Precautions for Using RE-Series Crossed Roller Bearings

1. Timely maintenance and servicing

To ensure that equipment can operate reliably over the long term, RE-series crossed roller bearings require regular maintenance and servicing to preserve their original performance, guarantee smooth operation, prevent failures, and enhance efficiency. Maintenance should be carried out in accordance with the machine’s operating standards and service conditions, encompassing tasks such as monitoring operating status, replenishing or replacing lubricants, and performing periodic disassembly inspections. Inspection and overhaul procedures typically cover aspects such as bearing rotational noise, vibration, temperature, and the condition of the lubricant.

2. Prevention of early-stage injuries

If unexpected premature damage occurs during bearing operation, it becomes difficult to achieve the expected fatigue life, rendering the bearing unusable. Such early‑stage damage may be classified as a failure or an accident; it can result from inadequate consideration of installation, operating conditions, or lubrication, or from the ingress of foreign particles, among other causes.

3. Identify the root cause of the fault

There can be many causes of actual damage to RE‑series crossed roller bearings, including insufficient lubricant, an inappropriate grade, defects in the oil supply and drainage system, foreign‑object contamination, installation errors, or excessive shaft deflection—either individually or in combination. Such issues are sometimes difficult to pinpoint, and misdiagnosis may not only fail to aid bearing maintenance but also make it challenging to prevent recurrence. Therefore, by thoroughly understanding the bearing’s operating conditions and its surrounding structure, clarifying the circumstances preceding and following the failure, and integrating this information with the observed damage and various contributing factors, one can identify the root cause of the problem and effectively prevent similar failures from occurring again.