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Bearing Tolerance Class P6/ABEC3

Bearing Tolerance Class P6/ABEC3

 

Bearing Tolerance Class P6/ABEC3 Introduction:

Bearing tolerance class P6/ABEC3 is one of the bearing classes.
Tolerance classes for ball bearings were defined by a committee within the ABMA known as the “Annular Bearings Engineers Committee” (ABEC scale).
Tolerances are commonly referred to as ABEC rating, or grade.
ABMA standard 20 defines 5 classes: ABEC 1, ABEC 3, ABEC 5, ABEC 7 and ABEC 9

Bearing Classes By Standard:

ANSI Standard 20 ISO 492 DIN 620 JIS B1514
ABEC 1 normal class 6X P0 Class 0
ABEC 3 class 6 P6 Class 6
ABEC 5 class 5 P5 Class 5
ABEC 7 class 4 P4 Class 4
ABEC 9 class 2 P2 Class 2

Please Note:
Some bearing manufacturers have created their own customized and branded tolerance standards (like P4+), but in this article we’re only focusing on international recognized standards.

Bearing Tolerance Class P6/ABEC3 Standard:

inner diameter average bore deviation average outer diameter deviation width deviation of inner and outer ring
over to upper deviation lower deviation upper deviation lower deviation upper deviation deviation under normal amend lower deviation
0.6 2.5 0 -7 0 -7 0 -40
2.5 10 0 -7 0 -7 0 -120 -250
10 18 0 -7 0 -8 0 -120 -250
18 30 0 -8 0 -9 0 -120 -250
30 50 0 -10 0 -11 0 -120 -250
50 80 0 -12 0 -13 0 -150 -380
80 120 0 -15 0 -15 0 -200 -380
120 180 0 -18 0 -18 0 -250 -500
180 250 0 -22 0 -20 0 -300 -500
250 315 0 -25 0 -25 0 -350 -500
315 400 0 -30 0 -28 0 -400 -630
400 500 0 -35 0 -33 0 -450
500 630 0 -40 0 -38 0 -500
630 800 0 -45
800 1000 0 -60

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