Technical knowledge center

The technical knowledge center is a collection of studies on the selection of fits, bore tolerances, reconditioning for pins and bushings, circlips, and bearing assembly rules.

The materials were developed on the basis of ISO standards and the practice of remanufacturing components of construction and industrial machinery.

Selection of rolling bearing fits

Principles of selecting a fit depending on the nature of the load, speed and operating temperature.
Discuss tolerance fields k6, m6, n6 and clearances C3-C5.

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H7-H11 hole tolerance fields (ISO 286)

Explanation of the basic hole system and tolerance table according to ISO 286-2.
Examples of practical application in remanufacturing.

👉 Go to tolerance table

Typical fits of bearing nodes

Overview of the most common combinations of tolerance fields for shafts and bores.
Practical configurations used in industry.

👉 See examples of fits

Reconditioning tolerances of holes for pins and bushings

Tables of permissible deviations used in the reconditioning of holes in construction machinery.
Guidelines for the assembly clearance of bushings and pins.

👉 Check regeneration tolerances

DIN 471 / DIN 472 circlips

Differences between shaft and bore rings.
Selection rules and dimensions according to DIN standard.

👉 See ring specifications

Slide bushings – types and selection

Characteristics of steel-bronze, composite and self-lubricating bushings.
Standards DIN 1494 / ISO 3547.

👉 Go to article about bushings

Installation and removal of bearings – technical principles

Basic installation rules, clearance control, heating, hydraulic methods and the most common installation errors.

👉 See installation instructions

If you need hole reconditioning, bushing selection or technical support – contact us.
We work in accordance with ISO standards and provide dimensional inspection after machining.