Engineering Reference
Miniature & Instrument Ball Bearings
Part Number Interchange
Cross-reference some of NHBB's most common inch series part numbers using the two bearing interchange tables provided below. The first table includes unflanged ball bearing part numbers; the second contains flanged part numbers. Additional resources for identifying product descriptions based on NHBB part numbers are provided on the Part Number Keys webpage.
Unflanged Ball Bearings
| NHBB | NMB | Timken (MPB) | BARDEN | myonic (RMB) | Old NHBB # |
|---|---|---|---|---|---|
| SSRI-2 | DDRI-2 | S2C | SR0-9 | UL1304X | SR09 |
| SSRI-2 1/2 | DDRI-2 1/2 | S2 1/2C | SR0 | UL1505X | SR0 |
| SSRI-2 1/2ZZ | DDRI-2 1/2ZZ | S2 1/2CHH | SR0SS | ULZ1505X | SR0PP |
| SSRI-3 | DDRI-3 | S3C | SR1 | R1706X | SR1 |
| SSRI-3ZZ | DDRI-3ZZ | S3CHH | SR1SS | RF1706X | SR1PP |
| SSRI-4 | DDRI-4 | S4C | SR1-4 | R2508X | SR1-4 |
| SSRI-4ZZ | DDRI-4ZZ | S4CHH | SR1-4SS | RF2508X | SR1-4PP |
| SSRI-3332 | DDRI-3332 | S3332C | SR133 | UL3006X | SR133 |
| SSRI-3332ZZ | DDRI-3332ZZ | S3332CHH | SR133SS | ULZ3006X | SR133PP |
| SSRI-5 | DDRI-5 | S5C | SR1-5 | R3010X | SR1-5 |
| SSRI-5ZZ | DDRI-5ZZ | S5CHH | SR1-5SS | RF3010X | SR1-5PP |
| SSRI-418 | DDRI-418 | S418C | SR144 | UL4008X | SR144 |
| SSRI-418ZZ | DDRI-418ZZ | S418CHH | SR144SS | ULZ4008X | SR144PP |
| SSRI-518 | DDRI-518 | S518C | SR2-5 | R4010X | SR2-5 |
| SSRI-518ZZ | DDRI-518ZZ | S518CHH | SR2-5SS | RF4010X | SR2-5PP |
| SSRI-618 | DDRI-618 | S618C | SR2-6 | SR2-6 | |
| SSRI-618ZZ | DDRI-618ZZ | S618CHH | SR2-6SS | SR2-6PP | |
| SSR-2 | DDR-2 | SR2C | SR2 | R4012X | SR2 |
| SSR-2ZZ | DDR-2ZZ | SR2CHH | SR2SS | RF4012X | SR2PP |
| SSR-2A | DDR-2A | SR2AC | SR2A | SR2A | |
| SSR-2ZZA | DDR-2ZZA | SR2ACHH | SR2APP | ||
| SSRI-5532 | DDRI-5532 | S5532C | SR155 | UL5010X | SR155 |
| SSRI-5532ZZ | DDRI-5532ZZ | S5532CHH | SR155SS | UL5010Z | SR155PP |
| SSRI-5632 | DDRI-5632 | S5632C | SR156 | UL6010X | SR156 |
| SSRI-5632ZZ | DDRI-5632ZZ | S5632CHH | SR156SS | ULZ6010X | SR156PP |
| SSRI-6632 | DDRI-6632 | S6316C | SR166 | UL6012X | SR166 |
| SSRI-6632ZZ | DDRI-6632ZZ | S6316CHH | SR166SS | ULZ6012X | SR166PP |
| SSR-3 | DDR-3 | SR3R | SR3 | R6016X | SR3 |
| SSR-3ZZ | DDR-3ZZ | SR3RHH | SR3SS | RF6016X | SR3PP |
| SSRI-614 | DDRI-614 | S614C | SR168 | UL8012X | SR168 |
| SSRI-614ZZ | DDRI-614ZZ | S614CHH | SR168SS | ULZ8012X | SR168PP |
| SSRI-814 | DDRI-814 | S814C | SR188 | UL8016X | SR188 |
| SSRI-814ZZ | DDRI-814ZZ | S814CHH | SR188SS | ULZ8016X | SR188PP |
| SSR-4 | DDR-4 | SR4C | SR4 | R8020X | SR4 |
| SSR-4ZZ | DDR-4ZZ | SR4CHH | SR4SS | RF8020X | SR4PP |
| SSRI-1214 | DDRI-1214 | SR4AR | SR4A | SR4AD | |
| SSRI-1214ZZ | DDRI-1214ZZ | SR4ARHH | SR4ASS | SR4APPD | |
| SSRI-8516 | DDRI-8516 | S8516R | SR1810 | SR1810 | |
| SSRI-8516ZZ | DDRI-8516ZZ | S8516RHH | SR1810SS | SR1810PP | |
| SSRI-1438 | DDRI-1438 | SR6R | SR6 | SR6D | |
| SSRI-1438ZZ | DDRI-1438ZZ | SR6RHH | SR6SS | SR6PPD | |
| SSRI-1812 | DDRI-1812 | SR8R | SR8 | SR8D | |
| SSRI-1812ZZ | DDRI-1812ZZ | SR8RHH | SR8SS | SR8PPD |
Flanged Ball Bearings
| NHBB | NMB | Timken (MPB) | BARDEN | myonic (RMB) | Old NHBB # |
|---|---|---|---|---|---|
| SSRIF-2 | DDRIF-2 | S2FC | SFR09 | ULK1304X | SFR09 |
| SSRIF-2 1/2 | DDRIF-2 1/2 | S2 1/2FC | SFR0 | ULK1505X | SFR0 |
| SSRIF-2 1/2ZZ | DDRIF-2 1/2ZZ | S2 1/2FCHH | SFR0SS | ULKZ1505X | SFR0PP |
| SSRF-3 | DDRF-3 | S3FC | SFR1 | RK1706X | SFR1 |
| SSRF-3ZZ | DDRF-3ZZ | S3FCHH | SFR1SS | RKF1706X | SFR1PP |
| SSRIF-4 | DDRIF-4 | S4FC | SFR1-4 | RK2508X | SFR1-4 |
| SSRIF-4ZZ | DDRIF-4ZZ | S4FCHH | SFR1-4SS | RKF2508X | SFR1-4PP |
| SSRIF-3332 | DDRIF-3332 | S3332FC | SFR133 | ULK3006X | SFR133 |
| SSRIF-3332ZZ | DDRIF-3332ZZ | S3332FCHH | SFR133SS | ULKZ3006X | SFR133PP |
| SSRIF-5 | DDRIF-5 | S5FC | SFR1-5 | RK3010X | SFR1-5 |
| SSRIF-5ZZ | DDRIF-5ZZ | S5FCHH | SFR1-5SS | RKF3010X | SFR1-5PP |
| SSRIF-418 | DDRIF-418 | S418FC | SFR144 | ULK4008X | SFR144 |
| SSRIF-418ZZ | DDRIF-418ZZ | S418FCHH | SFR144SS | ULKZ4008X | SFR144PP |
| SSRIF-518 | DDRIF-518 | S518FC | SFR2-5 | RK4010X | SFR2-5 |
| SSRIF-518ZZ | DDRIF-518ZZ | S518FCHH | SFR2-5SS | RKF4010X | SFR2-5PP |
| SSRIF-618 | DDRIF-618 | S618FC | SFR2-6 | SFR2-6 | |
| SSRIF-618ZZ | DDRIF-618ZZ | S618FCHH | SFR2-6SS | SFR2-6PP | |
| SSRF-2 | DDRF-2 | SR2FC | SFR2 | RK4012X | SFR2 |
| SSRF-2ZZ | DDRF-2ZZ | SR2FCHH | SFR2SS | RKF4012X | SFR2PP |
| SSRIF-5532 | DDRIF-5532 | S5532FC | SFR155 | ULK5010X | SFR155 |
| SSRIF-5532ZZ | DDRIF-5532ZZ | S5532FCHH | SFR155SS | ULKZ5010X | SFR155PP |
| SSRIF-5632 | DDRIF-5632 | S5632FC | SFR156 | ULK6010X | SFR156 |
| SSRIF-5632ZZ | DDRIF-5632ZZ | S5632CHH | SFR156SS | ULKZ6010X | SFR156PP |
| SSRIF-6632 | DDRIF-6632 | S6316FC | SFR166 | ULK6012X | SFR166 |
| SSRIF-6632ZZ | DDRIF-6632ZZ | S6316FCHH | SFR166SS | ULKZ6012X | SFR166PP |
| SSRF-3 | DDRF-3 | SR3FC | SFR3X3 | SFR3C | |
| SSRF-3ZZ | DDRF-3ZZ | SR3FCHH | SFR3SS | RKF6016X | SFR3PP |
| SSRIF-614 | DDRIF-614 | S614FC | SFR168 | ULK8012X | SFR168 |
| SSRIF-614ZZ | DDRIF-614ZZ | S614FCHH | SFR168SS | ULKZ8012X | SFR168PP |
| SSRIF-814 | DDRIF-814 | S814FC | SFR188 | ULK8016X | SFR188 |
| SSRIF-814ZZ | DDRIF-814ZZ | S814FCHH | SFR188SS | ULKZ8016X | SFR188PP |
| SSRF-4 | DDRF-4 | SR4FC | SFR4 | RK8020X | SFR4 |
| SSRF-4ZZ | DDRF-4ZZ | SR4FCHH | SFR4SS | RKF8020X | SFR4PP |
| SSRIF-8516 | DDRIF-8516 | S8516FC | SFR1810 | SFR1810 | |
| SSRIF-8516ZZ | DDRIF-8516ZZ | S8516FCHH | SFR1810SS | SFR1810PP | |
| SSRIF-1438 | DDRIF-1438 | SFR6X5 | SFR6DC | ||
| SSRIF-1438ZZ | DDRIF-1438ZZ | SR6FRHH | SFR6SS | SFR6PPD |
