Bearing Cross Reference & Bearing Interchange

The bearing interchange guide from AST Bearings outlines the bearing series part numbers and corresponding part numbers for the five most high demand ball bearing series. They include cross reference for the R Series 52100 chrome steel, stainless steel instrument series, flanged miniature series inch, miniature series inch and the metric miniature series. Only basic bearing interchange numbers are shown.

Below is just a small sample of AST's interchange and cross reference for five of our more popular ball bearing series. Please contact us directly if you do not find the part number you are looking for in our bearings cross reference guide and we will provide you an answer quickly and accurately.

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R Series (52100 Chrome Steel)

GRW	NEW DEPARTURE	SKF	MRC	FAFNIR	FAG
1/8B	R-2	EE-0	R-2	33-K-3	R-2
1/8B/083	R-2A		R-2-A	33-K-4	R-2-A
3/16	R-3	EE-1	R-3	33-K-5	R-3
1/4A	R-4	EEA-2	R-4	S-1-K-7	R-4
1/4	R-4A	EE-2	R-4-A	S-1-K	R-4-A
3/8	R-6	EE-3	R-6	S-3-K	R-6
	R-8	EE-4	R-8	S-5-K	R-8
	R-10	EE-5	R-10	S-7-K	R-10
	R-12	EE-6	R-12	S-8-K	R-12
	R-14	EE-8	R-14	S-9-K	R-14
	R-16	EE-9	R-16	S-10-K	R-16
	R-18	EE-10	R-18	S-11-K	R-18
	R-20	EE-11	R-20	S-12-K	R-20
	R-22		R-22		R-22
	R-24		R-24		R-24

Instrument Series (Stainless Steel)

GRW	NMB	MPB	BARDEN	RMB	EZO	NHBB
SS1/8B	DDR-2	SR2C	SR2	R4012X	SR2	SSR-2
SS1/8B-2Z	DDR-2ZZ	SR2CHH	SR2SS	RF4012X	SR2ZZ	SSR-2ZZ
SS1/8B/083	DDR-2A	SR2AC	SR2A		SR2A	SSR-2A
SS1S/8 B/083-2Z	DDR-2AZZ	SR2ACHH	SR2ASS		SR2AZZ	SSR-2AZZ
SS3/16	DDR-3	SR3C	SR3	R6016X	SR3	SSR-3
SS3/16-2Z	DDR-3ZZ	SR3CHH	SR3SS	RF6016X	SR3ZZ	SSR-3ZZ
SS1/4A	DDR-4	SR4C	SR4	R8020X	SR4	SSR-4
SS1/4A-2Z	DDR-4ZZ	SR4CHH	SR4SS	RF8020X	SR4ZZ	SSR-4ZZ
SS1/4	DDRI-1214	SR4AR	SR4A		SR4A	SSRI-1214
SS1/4-2Z	DDRI-1214ZZ	SR4ARHH	SR4ASS		SR4AZZ	SSRI-1214ZZ
SS3/8	DDRI-1438	SR6R	SR6		SR6	SSRI-1438
SS3/8-2Z	DDRI-1438ZZ	SR6RHH	SR6SS		SR6ZZ	SSRI-1438ZZ
SS1/2	DDRI-1812	SR8R	SR8		SR8	SSRI-1812
SS1/2-2Z	DDRI-1812ZZ	SR8RHH	SR8SS		SR8ZZ	SSRI-1812ZZ
SSF1/8B	DDRF-2	SR2FC	SFR2	RK4012X	SFR2	SSRF-2
SSF1/8B-2Z	DDRF-2ZZ	SR2FCHH	SFR2SS	RKF4012X	SFR2ZZ	SSRF-2ZZ
SSF3/16	DDRF-3	SR3FC	SFR3	ULK6016	SFR3	SSRF-3
SSF3/16-2Z	DDRF-3ZZ	SR3FCHH	SFR3SS	RKF6016X	SFR3ZZ	SSRF-3ZZ
SSF1/4A	DDRF4	SR4FC	SFR4	RK8020X	SFR4	SSRF4
SSF1/4A-2Z	DDRF4ZZ	SR4FCHH	SFR4SS	RKF8020X	SFR4ZZ	SSRF4ZZ
SSF3/8	DDRIF1438	SR6FR	SRF6		SFR6	SSRIF1438
SSF3/8-2Z	DDRIF1438ZZ	SR6FRHH	SFR6SS		SFR6ZZ	SSRIF1438ZZ
SSF1/2	DDRIF1812				SFR8	SSRIF1812
SSF1/2-2Z	DDRIF1812ZZ				SFR8ZZ	SSRIF1812ZZ

Interchange bearing numbers shown are basic numbers only.

Flanged Miniature Series Inch

EZO	GRW	RMB	NHBB	MPB	NMB
		ULK1304X	SSRIF-2	S2FC	DDRIF-2
SFR0	SSF1191	ULK1505X	SSRIF-21/2	S21/2FC	DDRIF-21/2
SFR0ZZ	SSF1191-2Z	ULKF1505X	SSRIF21/2ZZ	S21/2FCHH	DDRIF-21/2ZZ
SFR1	SSF1397	RK1706X	SSRIF-3	S3FC	DDRIF-3
SFR1ZZ	SSF1397-2Z	RKF1706X	SSRIF-3ZZ	S3FCHH	DDRIF-3ZZ
SFR1-4	SSF5/64	RK2508X	SSRIF-4	S4FC	DDRIF-4
SFR1-4ZZ	SSF5/64-2Z	RKF2508X	SSRIF-4ZZ	S4FCHH	DDRIF-4ZZ
SFR133	SSF2380	ULK3006X	SSRIF-3332	S3332FC	DDRIF-3332
SFR133ZZ	SSF2380-2Z	ULKZ3006X	SSRIF-3332ZZ	S3332FCHH	DDRIF-3332ZZ
SFR1-5	SSF3/32	RK3010X	SSRIF-5	S5FC	DDRIF-5
SFR1-5ZZ	SSF3/32-2Z	RKF3010X	SSRIF-5ZZ	S5FCHH	DDRIF-5ZZ
SFR144	SSF3175	ULK4008X	SSRIF-418	S418FC	DDRIF-418
SFR144ZZ	SSF3175-2Z	ULKZ4008X	SSRIF-418ZZ	S418FCHH	DDRIF-418ZZ
SFR2-5	SSF1/8A	RK4010X	SSRIF-518	S518	DDRIF-518
SFR2-5ZZ	SSF1/8A-2Z	RKF4010X	SSRIF-518ZZ	S518FCHH	DDRIF-518ZZ
SFR2-6	SSF1/8A6		SSRIF-618	S618FC	DDRIF-618
SFR2-6ZZ	SSF1/8A6-2Z		SSRIF-618ZZ	S618FCHH	DDRIF-618ZZ
SFR155	SSF3967	ULK5010X	SSRIF-5532	S5532FC	DDRIF-5532
SFR155ZZ	SSF3967-2Z	ULKZ5010X	SSRIF-5532ZZ	S5532FCHH	DDRIF-5532ZZ
SFR156	SSF4763A	ULK6010X	SSRIF-5632	S5632FC	DDRIF-5632
SFR156ZZ	SSF4763A-2Z	ULKZ6010X	SSRIF-5632ZZ	S5632FCHH	DDRIF-5632ZZ
SFR166	SSF4763B	ULK6012X	SSRIF-6632	S6316FC	DDRIF-6632
SFR166ZZ	SSF4763B-2Z	ULKZ6012X	SSRIF-6632ZZ	S6316FCHH	DDRIF-6632ZZ
SFR168	SSF6350A	ULK8012X	SSRIF-614	S614FC	DDRIF-614
SFR168ZZ	SSF6350A-2Z	ULKZ8012X	SSRIF-614ZZ	S614FCHH	DDRIF-614ZZ
SFR188	SSF6350B	ULK8016X	SSRIF-814	S814FC	DDRIF-814
SFR188ZZ	SSF6350B-2Z	ULKZ8016X	SSRIF-814ZZ	S814FCHH	DDRIF-814ZZ
SFR1810	SSF7938		SSRIF-8516	S8516FC	DDRIF-8516
SFR1810ZZ	SSF7938-2Z		SSRIF-8516ZZ	S8516FCHH	DDRIF-8516ZZ

Interchange bearing numbers shown are basic numbers only.
Add suffix SS for 440C stainless steel or DD for 400 series Martensitic stainless steel.

Miniature Series Inch

GRW	NMB	MPB	BARDEN	RMB	EZO	NHBB
SS1016	DDRI-2	S2C	SR0-9	UL1304X	SR09	SSRI-2
SS1191	DDRI-2 1/2	S2 1/2 C	SR0	UL1505X	SR0	SSRI-2 1/2
SS1191-2Z	DDRI-2 1/2 ZZ	S2 1/2 CHH	SR0SS	ULZ15O5X	SR0ZZ	SSRI-2 1/2 ZZ
SS1397	DDRI-3	S3C	SR1	R1706X	SR1	SSRI-3
SS1397-2Z	DDRI-3ZZ	S3CHH	SR1SS	RF1706X	SR1ZZ	SSRI-3ZZ
SS5/64	DDRI-4	S4C	SR1-4	R2508X	SR1-4	SSRI-4
SS5/64-2Z	DDRI-4ZZ	S4CHH	SR1-4SS	RF2508X	SR1-4ZZ	SSRI-4ZZ
SS2380	DDRI-3332	S3332C	SR133	UL3006X	SR133	SSRI-3332
SS2380-2Z	DDRI-3332ZZ	S3332CHH	SR133SS	ULZ3006X	SR133ZZ	SSRI-3332ZZ
SS3/32	DDRI-5	S5C	SR1-5	R3010X	SR1-5	SSRI-5
SS3/32-2Z	DDRI-5ZZ	S5CHH	SR1-5SS	RF3010X	SR1-5ZZ	SSRI-5ZZ
SS3175	DDRI-418	S418C	SR144	UL4008X	SR144	SSRI-418
SS3175-2Z	DDRI-418ZZ	S418CHH	SR144SS	ULZ4008X	SR144ZZ	SSRI-418ZZ
SS1/8A	DDRI-518	S518C	SR2-5	R4010X	SR2-5	SSRI-518
SS1/8A-2Z	DDRI-518ZZ	S518CHH	SR2-5SS	RF4010X	SR2-5ZZ	SSRI-518ZZ
SS1/8A/6	DDRI-618	S618C	SR2-6		SR2-6	SSRI-618
SS1/8A/6-2Z	DDRI-618ZZ	S618CHH	SR2-6SS		SR2-6ZZ	SSRI-618ZZ
SS3967	DDRI-5532	S5532C	SR155	UL5010X	SR155	SSRI-5532
SS3967-2Z	DDRI-5532ZZ	S5532CHH	SR155SS	ULZ5010X	SR155ZZ	SSRI-5532ZZ
SS4763A	DDRI-5632	S5632C	SR156	UL6010X	SR156	SSRI-5632
SS4763A-2Z	DDRI-5632ZZ	S5632CHH	SR156SS	ULZ6010X	SR156ZZ	SSRI-5632ZZ
SS4763B	DDRI-6632	S6316C	SR166	UL6012X	SR166	SSRI-6632
SS4763B-2Z	DDRI-6632ZZ	S6316CHH	SR166SS	ULZ6012X	SR166ZZ	SSRI-6632ZZ
SS6350A	DDRI-614	S614C	SR168	UL8012X	SR168	SSRI-614
SS6350A-2Z	DDRI-614ZZ	S614CHH	SR168SS	ULZ8012X	SR168ZZ	SSRI-614ZZ
SS6350B	DDRI-814	S814C	SR188	UL8016X	SR188	SSRI-814
SS6350B-2Z	DDRI-814ZZ	S814CHH	SR188SS	ULZ8016X	SR188ZZ	SSRI-814ZZ
SS7938	DDRI-8516	S8516R	SR1810		SR1810	SSRI-8516
SS7938-2Z	DDRI-8516ZZ	S8516RHH	SR1810SS		SR1810ZZ	SSRI-8516ZZ

Metric Miniature Series

GRW	ADR	NMB*	GRW	ADR	NMB*	GRW	ADR	NMB*
60/2.5		R825	691			681	WAX1	L310
623	623	R1030	69/1.5		R515	68/1.5	WAX1.5	L415
624	624	R1340	692	AX2	R620	682	WBX2	L520
634	634	R1640	69/2.5	X2.5	R725	68/2.35
625	625	R1650	693		R830	68/2.5	WAX2.5	L625
635	635	R1950	694	AY4	R1140	683	WAX3	L730
626	626	R1960	695	AY5	R1350	684	WAX4	L940
607	607	R1970	696	AY6	R1560	685	WX5	L1150
627	627	R2270	697	AY7		686	WAX6	L1360
608	608	R2280	698	AY8		687	WAX7	L1470
609	609		699	AY9		688	WX8	L1680
629	629	R2690	6900	AY10		689	WX9	L1790
6000	6000	6000				6800	WX10	L1910
		RF825	F691
F623		RF1030	F69/1.5		RF515	F681		LF310
F624		RF1340	F692	WFAX2	RF620	F68/1.5	WAX1.5	LF415
F634		RF1640	F69/2.5	WFX2.5	RF725	F682	WFBX2	LF520
F625		RF1650	F693	WFX3	RF830	F68/2.5	WFAX2.5	LF625
F635		RF1950	F694		RF1140	F683	WFAX3	LF730
F626		RF1960	F695		RF1350	F684	WFAX4	LF940
F607			F696		RF1560	F685	WFX5	LF1150
			F697			F686	WFAX6	LF1360
60/2.5-2Z		R825ZZ	F698			F687		LF1470
623-2Z	623ZZ	R1030ZZ				F688		LF1680
624-2Z	624ZZ	R1340ZZ	691-2Z			F689		LF1790
634-2Z	634ZZ	R1640ZZ	69/1.5-2Z	X1.5ZZ	R515ZZ	F6800
625-2Z	625ZZ	R1650ZZ	692-2Z
635-2Z	635ZZ	R1950ZZ	69/2.5-2Z	X2.5ZZ	R725Y03ZZ	681-2Z
626-2Z	626ZZ	R1960ZZ	693-2Z		R830ZZ	68/1.5-2Z	WAX1.5ZZ
607-2Z	607ZZ	R1970ZZ	694-2Z	AY4ZZ	R1140ZZ	682-2Z	WBX2ZZ	L520ZZ
627-2Z	627ZZ	R2270ZZ	695-2Z	AY5ZZ	R1350ZZ	68/2.5-2Z	WAX2.5ZZ	L625ZZ
608-2Z	608ZZ	R2280ZZ	696-2Z	AY6ZZ	R1560ZZ	683-2Z	WAX3ZZ	L730ZZ
609-2Z	609ZZ		697-2Z	AY7ZZ		684-2Z		L940ZZ
629-2Z	629ZZ	R2690ZZ	698-2Z	AY8ZZ		685-2Z		L1150ZZ
6000-2Z	6000ZZ	6000ZZ	699-2Z	AY9ZZ		686-2Z		L1360ZZ
		RF825ZZ	6900-2Z	AY10ZZ		687-2Z	WAX7ZZ	L1470ZZ
F623-2Z		RF1030ZZ				688-2Z		L1680W06ZZ
F624-2Z		RF1340ZZ	F691-2Z			689-2Z
F634-2Z		RF1640ZZ	F69/1.5-2Z		RF515ZZ	6800-2Z		L1910ZZ
F625-2Z		RF1650ZZ	F692-2 Z
F635-2Z		RF1950ZZ	F69/2.5-2Z		RF725Y03ZZ	F681-2Z
F626-2Z		RF1960ZZ	F693-2Z	WFX3ZZ	RF830ZZ	F68/1.5-2Z	WFAX1.5ZZ
F607-2Z			F694-2Z		RF1140ZZ	F682-2Z	WFBX2ZZ	LF520ZZ
			F695-2Z		RF1350ZZ	F68/2.5-2Z	WFAX2.5ZZ	LF625ZZ
			F696-2Z		RF1560ZZ	F683-2Z	WFAX3ZZ	LF730ZZ
			F697-2Z			F684-2Z		LF940ZZ
			F698-2Z			F685-2Z		LF1150ZZ
						F686-2Z		LF1360ZZ
						F687-2Z		LF1470ZZ
						F688-2Z
						F689-2Z
						F6800-2Z

Bearing interchange numbers shown are basic numbers only.
Add suffix SS for 440C stainless steel or DD for 400 series Martensitic stainless steel.

Contact AST Bearings for additional questions regarding our bearings gross reference guide.

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