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
Insulated Bearings Buyer’s Guide
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