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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 interchange bearing 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 below 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

Interchange bearing numbers shown are basic numbers only.

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    

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