TOLERANCE

Bearing tolerances include dimensional tolerance and rotary tolerance or dimensional accuracy and running accuracy , are regulated by ISO or JIS standards (rolling bearing tolerances) For dimensional accuracy, these standards prescribe the tolerances necessary when Installing bearings on shafts or in housings. Running accuracy is defined as the allowable Limits for bearing run-out during operation.
According to dimension tolerances and run out accuracy, ETC EVO deep groove ball bearing are ranged from ABEC-1 to ABEC-7. ABEC-1 is standard grade.

DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-1 (P0)
																INNER RING
																																	Tolerance in um.
d																V
mm										dmp						diameter Series									V dmp				K ia								Bs				v Bs
													9			0,1					2,3,4
over			incl			high				low						max.									max.				max.				high				low				max.
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

80			120			0				-20			25			25					12				12				25				0				-200				25
120			180			0				-25			31			31					19				19				30				0				-250				30
Notes :
1)0.6 is included																2)No values for diameter series 7,8.

																OUTER RING
																																	tolerance in um.
																V Dp
D						Dmp										Open Bearings									Capped				V Dmp				Kea				Cs				V Cs
mm																Diameter Series									Bearings
													9			0,1					2,3,4				2,3,4
Over			incl			high				low						max.													max.				max.				high low				max.
2/5			6			0				-8			10			8					6				10				6				15
6			18			0				-8			10			8					6				10				6				15
18			30			0				-9			12			9					7				12				7				15

30			50			0				-11			14			11					8				16				8				20				ldentical to
50			80			0				-13			16			13					10				20				10				25				Bs and				V Bs
80			120			0				-15			19			19					11				26				11				35				of inner ring of
																																					same bearing
120			150			0				-18			23			23					14				30				14				40
150			180			0				-25			31			31					19				38				19				45
180			250			0				-30			38			38					23								23				50
Note :
1)2.5 is included																3) No values for diameter series 9,0,1.
2) No values for diameter series 7,8.																4)Fit for before assembling and after disestablishing of snap
																rings.

			lnch-dimension equivalent formula																						1 inch= 25.4 mm
																									1 mm= 0.0393700787 inch

DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-3 (P6)
																	INNER RING
																																				Tolerance in um.
d																	V
mm												dmp					diameter Series									V dmp					K ia									Bs				v Bs
															9		0,1						2,3,4
over				incl				high				low					max.									max.					max.					high				low				max.
0/6				2/5				0				-7			9		7						5			5					5					0				-40				12
2/5				10				0				-7			9		7						5			5					6					0				-120				15
10				18				0				-7			9		7						5			5					7					0				-120				20

18				30				0				-8			10		8						6			6					8					0				-120				20
30				50				0				-10			13		10						8			8					10					0				-120				20
50				80				0				-12			15		15						9			9					10					0				-150				25

80				120				0				-15			19		19						11			11					13					0				-200				25
120				180				0				-18			23		23						14			14					18					0				-250				30
Notes :
1)0.6 is included																	2)No values for diameter series 7,8.

																	OUTER RING
																																				tolerance in um.
																	V Dp
D												Dmp					Open Bearings									Capped					V Dmp					Kea				Cs				V Cs
mm																	Diameter Series									Bearings
															9		0,1						2,3,4			2,3,4
Over				incl.				high				low					max.														max.					max.				high low				max.
2/5				6				0				-7			9		7						5			9					5					8
6				18				0				-7			9		7						5			9					5					8
18				30				0				-8			10		8						6			10					6					9

30				50				0				-9			11		9						7			13					7					10				ldentical to
50				80				0				-11			14		11						8			16					8					13				Bs and				V Bs
80				120				0				-13			16		16						10			20					10					18				of inner ring of
																																								same bearing
120				150				0				-15			19		19						11			25					11					20
150				180				0				-18			23		23						14			30					14					23
180				250				0				-20			25		25						15								15					25
Note :
1)2.5 is included.																	3) No values for diameter series 9.
2) No values for diameter series 7,8.																	4)Fit for before assembling and after disestablishing of snap
																	rings.

				lnch-dimension equivalent formula																						1 inch= 25.4 mm
																										1 mm= 0.0393700787 inch





DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-5 (P5)
																			INNER RING
																														Tolerance in um.
d											v								dp
mm							dmp				Diameter Series									V dmp				K ia			Sd			Sia								Bs				v Bs
											9								0,1,2,3,4
over		incl.			high		low				max.									max.				max.			max.			max.				high				low				max.
0/6		2/5			0		-5				5								4	3				4			7			7				0				-40				5
2/5		10			0		-5				5								4	3				4			7			7				0				-40				5
10		18			0		-5				5								4	3				4			7			7				0				-80				5

18		30			0		-6				6								5	3				4			8			8				0				-120				5
30		50			0		-8				8								6	4				5			8			8				0				-120				5
50		80			0		-9				9								7	5				5			8			8				0				-150				6

80		120			0		-10				10								8	5				6			9			9				0				-200				7
120		180			0		-13				13								10	7				8			10			10				0				-250				8
Notes :
1)0.6 is included																				3) Fit for groove ball bearing only.
2)No values for diameter series 7,8.
																			OUTER RING
																														tolerance in um.
D											v								dp
mm							Dmp				Diameter Series									VDmp				Kea			SD			Sea								Cs				v Bs
											9								0,1,2,3,4
over		incl.			high		low				max.									max.				max.			max.			max.				high				low				max.
2/5		6			0		-5				5								4	3				5			8			8												5
6		18			0		-5				5								4	3				5			8			8				ldentical to								5
18		30			0		-6				6								5	3				6			8			8								Bs				5
																																		of inner ring of
30		50			0		-7				7								5	4				7			8			8				same bearing								5
50		80			0		-9				9								7	5				8			8			10												6
80		120			0		-10				10								8	5				10			9			11												8

120		150			0		-11				11								8	6				11			10			13												8
150		180			0		-13				13								10	7				13			10			14												8
180		250			0		-15				15								11	8				15			11			15												10
Note :
1)2.5 is included																								4)No values for flanged bearing.
2) No values for diameter series 7,8.																								5)Fit for groove ball bearings.
3) No values for shielded and sealed bearings.

		lnch-dimension equivalent formula																						1 inch= 25.4 mm
																								1 mm= 0.0393700787 inch











DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-7 (P4)
																						INNER RING
																																											Tolerance in um.
d																		v				dp
mm									dmp					ds				Diameter Series										V dmp				K ia			Sd				Sia						Bs	v Bs
																		7,8,9				1,7,2,3,4
over	incl				high				low			high		low				max.										max.				max.			max.				max.				high		low	max.
0/6	2/5				0				-4			0		-4				4				3						2				2/5			3				3				0		-40	2/5
2/5	10				0				-4			0		-4				4				3						2				2/5			3				3				0		-40	2/5
10	18				0				-4			0		-4				4				3						2				2/5			3				3				0		-80	2/5

18	30				0				-5			0		-5				5				4						2/5				3			4				4				0		-120	2/5
30	50				0				-6			0		-6				6				5						3				4			4				4				0		-120	3
50	80				0				-7			0		-7				7				5						3/5				4			5				5				0		-150	4

80	120				0				-8			0		-8				8				6						4				5			5				5				0		-200	4
120	180				0				-10			0		-10				10				8						5				6			6				7				0		-250	5
Notes :
1)0.6 is included																						2)Dimeter Series 7 refers to those defined by GB 273.3
																						as the miniature bearing series 7.
																						OUTER RING
																																											tolerance in um.
D																		v				dp
mm									Dmp					Ds				Diameter Series										V Dmp				Kca			SD				Sea						cs	v Cs
																		7,8,9				1,7,2,3,4
over	incl.				high				low			high		low				max.										max.				max.			max.				max.				high		low	max.
2/5	6				0				-4			0		-4				4				3						2				3			4				5							2/5
6	18				0				-4			0		-4				4				3						2				3			4				5				ldentical			2/5
18	30				0				-4			0		-5				5				4						2/5				4			4				5				to		Bs	2/5
																																											of inner
30	50				0				-5			0		-6				6				5						3				5			4				5				ring of			2/5
50	80				0				-6			0		-7				7				5						3/5				5			4				5				same			3
80	120				0				-7			0		-8				8				6						4				6			5				6				bearing			4

120	150				0				-8			0		-9				9				7						5				7			5				7							4
150	180				0				-10			0		-10				10				8						5				8			5				8							5
180	250				0				-11			0		-11				11				8						6				10			7				10							7
Note :
1)2.5 is included																						3)Not applicable for closed type bearings.
2)These windage is applicable for																						4)Dimeter Series 7 refers to those defined by GB273.3
diameter series 1.7.2.3.and 4.																						as the miniature bearing series 7.

	lnch-dimension equivalent formula																					1 inch= 25.4 mm
																						1 mm= 0.0393700787 inch