Types of Insulated Bearings: Enhancing Electrical Protection in Industrial Applications
Introduction
The model interchangeable table of insulated bearings lists different brands and models of insulated bearings so that users can choose the right bearings according to their needs. The following are some of the insulation bearing models and their corresponding interchangeable models:
Prefix & Suffix Interchange
Sealing Suffix Designator
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| CLOSURES | ||||||
| One Non-Contact Seal | LB | RZ | RZ | RZ | V | LB |
| Two Non-Contact Seals | LLB | 2RZ | 2RZ | 2RZ | VV | LLB |
| One Contact Seal | LU | RS1 | ELS | RS | DU | LU |
| Two Contact Seals | LLU | 2RS1 | 2ELS | 2RS | DDU | LLU |
| One Shield | Z | Z | Z | Z | Z | Z |
| Two Shields | ZZ | 2Z | 2Z | ZZ | ZZ | ZZ |
| One Snap Ring | NR | NR | NR | NR | NR | NR |
Accuracy Level Suffix Designator
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| PRECISION CLASSES | ||||||
| ABEC 3 | P6 | P6 | P6 | M* | P6,PA3 | P6 |
| ABEC 5 | P5 | P5 | P5 | V* | P5,PA5 | P5 |
| ABEC 7 | P4 | P4 | P4S | MM, MMV | P4,PA7 | P4 |
| ABEC 9 | P2 | PA9A | P2 | MMX* | P2,PA7 | P2 |
Angle Rating Suffix Designator
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| CONTACT ANGLES | ||||||
| 15° | C | C | C | 2* | C | C |
| 25° | H | AC, ACD | E | 3* | A5 | H |
| 30° | - | A | N/A | N/A | A | - |
| 40° | B | B | B | - | B | B |
Carrying capacity class code
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| PRELOAD | ||||||
| Extra Light | GL | - | - | UX | EL | GL |
| Light | GN, J74 | GA | L | UL | L, C7 | GN, J74 |
| Medium | GM, J84 | GB | M | UM | M, C8 | GM, J84 |
| Heavy | GH, J94 | GC | H | UH | H, C9 | GH, J94 |
Cage material code
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| CAGE | ||||||
| Phenolic | T1 | TP | TA, TB, TH, TP | CR | T | T1 |
| Pressed Brass | Y | Y | MP | NO SYM | Y | Y |
| Polyamide/Nylon | T2 | TN, P, TN9 | TN, T, TV | PRB/PRC, CF | TY | T2 |
| Brass | L1 | M, MA, MB | M, MP | MBR | CAM, M | L1 |
| Pressed Steel | J | J | J | C, CD | W | J |
Spherical feature suffix
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| DUPLEX | ||||||
| Universal Ground | G, U | G** | U | SU | SU | G, U |
| SPHERICAL FEATURES | ||||||
| Taper Bore | K | K | K | K | K | K |
| Oil Groove | W33, D1 | W33 | S | W33 | E4 | W33, D1 |
| Shaker Screens | UAVS, EF800, EMADIVS | CACM2/W502 | F80 | W800 | VS3(4) | UAVS, EF800, EMADIVS |
Bearing Series Interchange
Cylindrical Roller Insulated Bearings
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| CYLINDRICAL | ||||||
| N | N | N | 000RN0 | N | N | |
| NU | NU | NU | 000RU0 | NU | NU | |
| NF | NF | N/E | 000RF0 | NF | NF | |
| NJ | NJ | NJ | 000RJ0 | NJ | NJ | |
| NH | NH | NJ&HJ | N/A | NH | NH | |
| NN | NN | NN | N/A | NN | NN |
Deep Groove Ball Insulated Bearings
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| BALL BEARINGS | ||||||
| 600 | 600 | 600 | 30K | 600 | 600 | |
| 6800 | 61800 | 61800 | - | 6800 | 6800 | |
| 6900 | 61900 | 61900 | 9300K | 6900 | 6900 | |
| 6000 | 6000 | 6000 | 9100K | 6000 | 6000 | |
| 6200 | 6200 | 6200 | 200K | 6200 | 6200 | |
| 6300 | 6300 | 6300 | 300K | 6300 | 6300 | |
| 6400 | 6400 | 6400 | 6400 | 6400 | 6400 | |
| MAN CAPACITY | BL200 | 200 | 200 | 200W | BL200 | BL200 |
| BL300 | 300 | 300 | 300W | BL300 | BL300 |
Angular Contact Ball Insulated Bearings
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| ANGULAR CONTACT | ||||||
| 7800 | 71800 | 71800 | - | - | 7800 | |
| 7900(71900) | 71900 | 71900 | 2MM9300WI | 7900 | 7900(71900) | |
| 7000 | 7000 | 7000 | 7100 | 7000 | 7000 | |
| 7200 | 7200 | 7200 | 7200 | 7200 | 7200 | |
| 7300 | 7300 | 7300 | 7300 | 7300 | 7300 |
Spherical roller-insulated bearings
| Characteristics | NTN | SKF | FAG | TIMKEN | NSK | NTN |
|---|---|---|---|---|---|---|
| SPHERICAL | 21300 | 21300 | 21300 | 21300 | 21300 | 21300 |
| 22200 | 22200 | 22200 | 22200 | 22200 | 22200 | |
| 22300 | 22300 | 22300 | 22300 | 22300 | 22300 | |
| 23000 | 23000 | 23000 | 23000 | 23000 | 23000 | |
| 23100 | 23100 | 23100 | 23100 | 23100 | 23100 | |
| 23200 | 23200 | 23200 | 23200 | 23200 | 23200 | |
| 23400 | 23400 | 23400 | 23400 | 23400 | 23400 | |
| 24000 | 24000 | 24000 | 24000 | 24000 | 24000 | |
| 24100 | 24100 | 24100 | 24100 | 24100 | 24100 |
Deep Groove Ball Insulated Bearings Common Interchangeable Models
| FAG | TFL | SKF | NKE | NSK | NTN |
|---|---|---|---|---|---|
| 6214-M-J20AA-C3 | 6214M/C3VL0241 | 6214M/C3VL0241 | 6214-M-C3-SQ77 | 7MC3-6214C3 | |
| 6215-J20AB-C3 | 6215/C3VL0241 | 6215/C3VL0241 | 6215-M-C3-SQ77 | 6215HDY2C3 | 7MC3-6215C3 |
| 6216-J20AA-C3 | 6216/C3VL0241 | 6216/C3VL0241 | 6216-M-C3-SQ77 | 6216HDY2C3 | 7MC3-6216C3 |
| 6217-J20AA-C3 | 6217/C3VL0241 | 6217/C3VL0241 | 6217-M-C3-SQ77 | 6217HDY2C3 | 7MC3-6217C3 |
| 6218-J20AB-C3 | 6218/C3VL0241 | 6218/C3VL0241 | 6218-M-C3-SQ77 | 6218HDY2C3 | 7MC3-6218C3 |
| 6226-J20C-C3 | 6226/C3VL2071 | 6226/C3VL2071 | |||
| 6228-J20AA-C3 | 6228/C3VL0241 | 6228/C3VL0241 | 7MC3-6228C3 | ||
| 6311-M-J20AA-C3 | 6311M/C3VL0241 | 6311M/C3VL0241 | 7MC3-6311C3 | ||
| 6316-M-J20AA-C3 | 6316M/C3VL0241 | 6316M/C3VL0241 | 6316-M-C3-SQ77 | 6316HDY2C3 | 7MC3-6316L1BC3 |
| 6318-2Z-J20C-C3 | 6318/C3VL2071 | 6318/C3VL2071 | |||
| 6326-M-J20AB-C3 | 6326M/C3VL0241 | 6326M/C3VL0241 | 6326-M-C3-SQ77 | 6326HDY2C3 | 7MC3-6326L1BC3 |
| 6336-M-J20C-C3 | 6336M/C3VL2071 | 6336M/C3VL2071 | |||
| 6338-M-J20C-C3 | 6338M/C3VL2071 | 6338M/C3VL2071 |
Expanded Reading
NSK Insulated Bearings
Introduction NSK Bearing Company was established in 1916. Over the years, it has specialized in research and development and accumulated production experience in the bearing field. Eventually, it gained a…
Areas of Application for Electrically Insulated Bearings
Introduction Electrically insulated bearings play a vital role in modern industry. Electrically insulated bearings, also known as insulated bearings, can block the passage of electric current and have excellent insulating…
Electrically Insulated Bearings for Electric Motors
Introduction Electrically insulated bearings are mainly used in various types of motor industries, and as an important equipment support component, the electrical insulation in bearings plays a crucial role. High-performance…
Insulated Bearings Buyer’s Guide
Introduction Insulated bearings have become an indispensable part of many mechanical devices in today’s highly electrified industrial environment. They cannot only effectively isolate the current and prevent the occurrence of…
TFL Insulated Bearings
Introduction: TFL Insulated Bearings – The Future of Motor Protection Bearing galvanic corrosion occurs on the surface of the bearing due to the presence of shaft currents during the motor’s…
Cylindrical Roller Insulated Bearings
Introduction Cylindrical roller insulated bearings are electrically insulated with added insulation properties to standard cylindrical roller bearings. They are primarily used in various modern industrial fields and become an essential…