TOLERANCE CLASS ABEC-1

INNER RING  Tolerance in um

d		^dmp		Vdp2)			Vdmp	Kia	^Bs		VBs
				Diameter Series
mm				9	0,1	2,3,4
over	incl.	high	low	max.			max.	max.	high	low	max.
1)0.6	2.5	0	-8	10	8	6	6	10	0	-40	12
2.5	10	0	-8	10	8	6	6	10	0	-120	15
10	18	0	-8	10	8	6	6	10	0	-120	20
18	30	0	-10	13	10	8	8	13	0	-120	20
30	50	0	-12	15	12	9	9	15	0	-120	20
50	80	0	-15	19	19	11	11	20	0	-150	25

1)0.6 is included.
2)No value for diameter series 7,8.

 

 

 OUTER RING Tolerance in um

D		^Dmp		VDp2)4)				VDmp4)	Kea	^Cs		VCs
				Open Bearings			Capped Bearings2)3)
mm
				Diameter Series
				9	0,1	2,3,4	2,3,4
over	incl.	high	low	max.				max.	max.	high	low	max.
1)2.5	6	0	-8	10	8	6	10	6	15	Identical to
6	18	0	-8	10	8	6	10	6	15	^Bs and VBs
18	30	0	-9	12	9	7	12	7	15	of inner ring of
										same bearing
30	50	0	-11	14	11	8	16	8	20
50	80	0	-13	16	13	10	20	10	25
80	120	0	-15	19	19	11	26	11	35
120	150	0	-18	23	23	14	30	14	40

1)2.5 is included.
3)No values for diameter seriers9,0,1.
2)No values for diameter series 7,8.
4)Fit for before assembling and after disestablish of snap rings.

 

 

ABEC STANDARD BEARING TOLERANCES FOR INCH-DIMENSION BALL BEARINGS

Unit: (Inch) 1″=25.4mm
ABEC	O.D. SIZE	Radial		Mean Diam.
		Runout		Tolerance
		Inner	Outer	Bore	O.D.
		Ring	Ring
ABEC+1	(0 – .7086 in.)	0.004	0.006	0/–.0003	0/–.0003
	(over .7086 – 1.1811 in.)	0.004	0.006	0/–.0004	0/–.0004

Flange outside diameter tolerance
(Unit : μm)
D1		Column 1		Column 2
(mm)		ΔD1s
Over	Incl.	Upper	Bottom	Upper	Bottom
	10	220	-36	0	-36
10	18	270	-43	0	-43
18	30	330	-52	0	-52

Remarks : When the flange outside diameter is used for location, column 2 shall apply.

 

Tolerances of flange width and tolerance of rotation precision related to flange
(Unit : μm)
D		ABEC-1			ABEC-1
(mm)		ΔC1s			VC1s
Over	Incl.	Upper	Bottom		MAX
2.5*1	30	0	-80		12*2
			-120		15*3
					20

*1 D = 2.5mm is included in this dimension division.
*2 the values apply only up to and including d = 2.5mm.
*3 the values apply only up to and including d = 10mm.

 

Thrust Bearing Tolerances (l) All Sizes          (Tolerances in (Unit : μm))
Grade	BORE Tolerance	BORE 2	Mean O.D.	Mean OD 2	Mean Height
		Tolerance	Tolerance	Tolerance	tolerance
ABEC-1	0/-8	0/-50	0/-11	_5/-20	0/-75