9 February 2026
Discover the causes and how manufacturing precision ensures reliable performance over time.
Rolling bearings are essential components of every industrial plant or machinery.
When they fail, they cause unexpected machine downtime, damage to adjacent components and high operating costs.
In most cases, the cause does not lie in the design, but in insufficient manufacturing precision that compromises the durability and reliability of the system.
Every problem caused by poor manufacturing quality
1 - Premature Wear
Premature wear of a rolling bearing is often caused by:
- Errors in the profile of rolling elements or raceways
- Incorrect surface finishes
- Insufficient surface hardness
Inadequate geometry concentrates the load on localized areas, generating high stress and accelerating material fatigue.
Precision grinding, combined with hardness and dimensional checks performed in a temperature-controlled metrology room, allows maintaining tight geometric tolerances and ensuring uniform contact between rolling elements and raceways.
2 - Vibrations and Noise
Noise and vibrations almost always indicate non-conforming internal clearances or misalignments.
Excessive clearance causes impacts and instability, while too little clearance causes friction with consequent overheating.
Through appropriate geometric checks in the metrology room, Distitec ensures the correct clearance class (C2, CN, C3) for each application, guaranteeing smooth and quiet operation.
3 - Cage Breakage or Roller Seizure
A poorly designed cage or one constructed with unsuitable materials can deform under load or at high temperatures.
Misalignment between cage and rollers can generate friction, contamination from metallic particles or seizure.
Precision mechanical machining, combined with complete geometric verification through latest-generation metrological instruments, guarantee correct concentricity and structural sturdiness of the cage.
The use of high-quality metallic materials – such as brass, steel or aluminum – ensures mechanical strength, dimensional stability and long-term reliability, even in the presence of high stresses or thermal variations.
4 - Raceway Damage (Brinelling, Pitting, Spalling)
Surface defects or non-uniform or poorly executed heat treatments can cause cracks, grooves and material detachment.
Distitec bearings are manufactured with high-purity alloyed steels, subjected to controlled heat treatments, which guarantee uniform microstructure and constant hardness.
Precision Rolling Bearings: The Foundation of Reliability
The geometric and dimensional quality of components is the decisive factor that determines durability, efficiency and safety.
For this reason, Distitec produces high-precision rolling bearings, thanks to an internal production cycle that includes:
- Grinding of all functional components
- Dimensional checks
- Final testing in temperature-controlled metrology room
The Distitec metrology room is equipped with surface roughness tester, roundness measuring instrument and coordinate measuring machines (CMM), which guarantee the geometric conformity of each component and uniformity between production batches.
How We Guarantee the Dimensional Uniformity of Every Bearing
For companies operating in certified environments or on automated lines, dimensional repeatability is an indispensable requirement.
Distitec ensures production uniformity between parts, thanks to rigorous metrological checks carried out under controlled temperature and humidity conditions.
Each production batch is verified, traced and documented, ensuring geometric consistency and complete conformity to the required technical specifications.