Designations of Spherical Plain Bearings -2

• Additional designation (on the right) - Б Е И К К1 Л Р Т У Э Ю Ю2 Я

The additional designation located on the right after the main designation of the spherical plain bearing indicates special technical requirements.
Б - one or two rings made of bronze;
Е - one or two rings made of polymer material;
И - sliding surface coated with molybdenum disulfide;
К - groove and hole for lubrication on the inner and outer rings;
К1 - groove and hole for lubrication on the outer ring;
Л - one or two rings made of brass;
Р - one or two rings made of heat-resistant steel;
Т - annealing temperature;
У - reduced inner axial clearance;
Э - axes of the outer and inner rings are displaced relative to each other (eccentric bearing).
Ю - one or two rings made of stainless steel;
Ю2 - Sliding surface - stainless steel/silver (coating the inner ring ball with silver);
Я - one or two rings made of rarely used materials.
For spherical plain bearings of the ШЛТ design, the additional designation may also indicate specific loads under which the coating strength was tested. When the specific load is 120 MPa, the special designation is not used. The letters "А" or "Б" encode reduced specific loads used in testing the strength of the organovolokno-coated steel (90 MPa and 60 MPa, respectively).

Lubrication Method of Spherical Plain Bearings.
Spherical plain bearings can be divided into two groups based on the method of lubricating the working surfaces:

Spherical plain bearings requiring lubrication supply (with steel/steel sliding surfaces). Spherical plain bearings with steel/steel sliding surfaces are designed to withstand alternating heavy, impact, or static loads.

Self-lubricating spherical plain bearings without external lubrication (with steel/metal-polymer, steel/organovoloknit sliding surfaces). Self-lubricating spherical plain bearings are primarily designed to handle high constant-direction loads at low sliding speeds. They are used in assemblies with high durability requirements and in situations where maintenance of supports is difficult, making the use of steel/steel sliding surface bearings impractical.

Working Temperature of Spherical Plain Bearings.
Spherical plain bearings are operational at temperatures up to +120°C. Short-term operation of bearings at temperatures up to +150°C is permitted. For more demanding temperature conditions, special execution bearings are produced.

Single-fracture spherical plain bearings, types ШП, ШСП, ШСП...К1, ШСП...К, ШМП.
The advantage of single-fracture bearing types ШП, ШСП, ШСП...К1, ШСП...К, ШМП over types Ш, ШС, ШС...К1, ШС...К lies in the absence of cylindrical belts (grooves) on the inner rings and the absence of grooves on the outer rings, resulting in an increased sliding working surface and, consequently, enhanced load-carrying capacity.
To improve wear resistance, single-fracture bearings can be coated with molybdenum disulfide (indicated by the letter "И" in the designation).

Main Designations of Imported ISO Spherical Plain Bearings

Main Designations of ISO Imported Spherical Plain Bearings

Bearing Type:
G - Spherical Plain Bearing

Precision Degree:
1 - First degree (not specified)
2 - Second degree

Internal Construction Features:
Integral with grooves (not specified)
E - One split outer ring
I - Two splits on the outer ring
Z - Inch size inner ring
G - Wide inner ring
Diameter Series:
K, H, N, C - Series designations (K - not specified in the designation)
For example:
GEH - Heavy-duty series
GE - Standard series

Inner Diameter Designation:
xx - Expressed as a number equal to the nominal size in mm.

Design Variants:
Sliding Surface:
E - Steel/Steel
C - Steel/Metal-Ceramic Composite
F - Steel/Fiberglass Composite
T - Steel/Phenolic Resin/Fabric Composite

Design Variants:
Without holes and grooves for lubrication (not specified)
SA - With holes and grooves for lubrication on the outer ring
SB - With holes and grooves for lubrication on the inner ring
S - With holes and grooves for lubrication on both inner and outer rings

Ring Material:
Rings made of SHX steel (not specified)
GR - Rings made of stainless steel
TVA - Outer ring made of plastic
TVB - Inner ring made of plastic
TV - Both outer and inner rings made of plastic

Protective Elements:
2RS - Double-sided seals
ZZ - Shield on both sides of the bearing

Example: GE40 ES 2RS
Spherical plain bearing of standard series with an inner diameter of 40mm, featuring steel/steel sliding surfaces, with holes and grooves for lubrication on both inner and outer rings, and equipped with double-sided seals.

• spherical plain bearing
• russian bearings