Single row angular contact ball bearings

Single row angular contact ball bearings

Main dimensions

The main and connection dimensions of the bearings specified in the dimension tables are in accordance with the international standards ISO 15 (STN 02 4629).


Single row angular contact ball bearings α = 26°, α = 40°

The group of single row angular contact ball bearings comprises of bearings with contact angle α = 26° and α = 40° designed for standard seating and the high-precise single row ball bearings designed for high rotation speed.

These products have deep raceway that enables the absorbtion of radial load at relative heavy axial load in single direction. The bearings are mounted in pairs – face to face or back to back – in order to absorb the axial load in both directions.

Single row angular contact ball bearings designated for high rotation speed

Single row angular contact ball bearings designated for high rotation speed and high precision of seating differ from standard angular contact ball bearings by inner design of bearing rings, contact angle dimension of the ball with the raceways of the rings, construction of cage, high precision degree of operation. The bearings are non-separable and their correct arrangement assures required firmness and precision of seating. The bearings have textite cage guided on the inner ring (TB) or on the outer ring (TA).

Tolerance

Single row angular contact ball bearings are commonly produced in tolerance classes P0 and P6 according to the standard ISO 495. Production of bearings with higher tolerance class (P5 or P4) should be discussed in advance.

Radial equivalent dynamic load

Angular Contact Ball Bearings α = 40°, type B:

Pr = Fr
Pr = 0,35.Fr + 0,57.Fa

for Fa/Fr ≤ 1,14
for Fa/Fr > 1,14


Angular Contact Ball Bearings α = 26°, type AA:

Pr = Fr
Pr = 0,41.Fr + 0,87.Fa

for Fa/Fr ≤ 0,68
for Fa/Fr > 0,68


Radial equivalent static load

Angular Contact Ball Bearings α = 40°, type B:

Por = 0,5.Fr + 0,26.Fa

(Por ≥ Fr)


Angular Contact Ball Bearings α = 26°, type AA:

Por = 0,5.Fr + 0,37.Fa

(Por ≥ Fr)


Designation

Designation of standard single row angular contact ball bearings is specified in the dimension tables.
Modification of the basic design is designated with additional symbols according to STN 02 4608.

The meaning of the most used symbols for single row angular contact ball bearings

SymbolExampleMeaning
AA7203AAContact angle α = 26°, pressed steel cage
B7304BContact angle α = 40°, pressed steel cage
BETNG7206BETNGContact angle α = 40°, higher load rating, machined cage made of polyamide, rolling elements centered
TBB7204AATBCage made of textite guided on the inner ring for high rotation speed
P67206B P6Higher tolerance class than standard