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
Materials for Electrically Insulated Bearings
Introduction Electrically insulated bearings have additional insulating properties than normal bearings. Insulated bearing technology involves spraying insulating materials on the inner or outer ring of the bearing and using ceramic…
Deep Groove Ball Insulated Bearing
Introduction Welcome to the website of TFL Insulated Bearings.TFL, as one of the leading manufacturers of insulated bearings in China, specializes in the research and development of insulated bearings to…
FAG Insulated Bearings
Introduction: The Revolutionary Impact of FAG Insulated Bearings FAG bearings are fully certified in almost every possible field and have always played a very important role. FAG insulated bearings are…
Insulated Bearings Designator
Introduction Bearing code refers to a set of symbols used to indicate the inner diameter of the bearing, diameter series, width series and type. Code usually consists of letters and…
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…
NTN Insulated Bearings
Introduction NTN Corporation was founded in 1918 and is headquartered in Nishi-ku, Osaka, Japan. The company is one of the world’s leading manufacturers of comprehensive precision machinery for a wide…