Signatures in NTN bearings and their equivalents in products of competitors: SKF, FAG, NSK, KOYO
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The knowledge of the labeling system allows to distinguish products within the offer of one manufacturer, as well as to compare products and their variants with each other.
|
Type of bearings |
Description |
NTN | SKF | FAG | NSK | KOYO |
| Basic designations | stamped steel cage | J | J | omitted | W | // |
| machined brass cage | L1, G1 | M, MA, MB | M | M | FY | |
| polyamide (injection molded) basket | T2 | P, TN, TN9 | TVH, TVP | T | FG | |
| needle holder basket | G2 | & nbsp; | & nbsp; | & nbsp; | FP | |
| solid brass cage, one-piece, outer ring centered | & nbsp; | & nbsp; | MP1A | & nbsp; | PA | |
| bearing with full number of rolling elements (without cage) | V | V | V | V | V | |
| taper 1:12 | K |
K | K | K | K | |
| taper 1:30 | K30 | K30 | K30 | K30 | K30 | |
| snap ring groove on outer surface of outer ring | N | N | N | N | N | |
| groove with snap ring fitted on the outside of the outer ring | NR | NR | & nbsp; | NR | NR | |
| reinforcing the assembly of rolling elements and optimized internal structure |
E | E, EC | E, E1 | E | R | |
| bearing or bearing elements made of hardened stainless steel | F (prefix) | HV (X) | & nbsp; | h | ST (x) | |
| case hardened bearing or bearing components | 4T-ET- / ECO- | HA (X) | & nbsp; | g | H (x), UR, L | |
| ceramic rolling elements | 5s (prefix) | & nbsp; | & nbsp; | & nbsp; | 3 NC (prefix) | |
| bearing filled: Solid Oil | LP ... | W64 | & nbsp; | & nbsp; | SF (prefix) | |
| Type of bearings | Description | NTN | SKF | FAG | NSK | KOYO |
| Ball bearings | one-sided or two-sided sealing pressed with a steel protective plate | Z / ZZ | Z / 2Z | Z / 2Z | Z / ZZ | Z / ZZ |
| one-sided or double-sided sealing with a non-contact rubber seal | LB / LLB | RZ / RRZ | & nbsp; | V / W | RU / 2RU | |
| single-contact or double-contact sealing with reduced friction, made of rubber (NBR), reinforced with a steel plate | LH / LLU | RSL / 2RSL | & nbsp; | & nbsp; | RD / 2RD | |
| one-sided or two-sided seal made of rubber (NBR), reinforced with a steel plate | LU / LLU | RS1 / 2RS1 | RSR / 2RSR | DU / DDU | RS / 2RS | |
| one-sided or two-sided rubber seal (NBR), reinforced with a steel plate | LH / LLH | RSH / 2RSH | & nbsp; | & nbsp; | RK / 2RK | |
| bearing dimensionally stabilized for operating temperature up to + 200oC |
TS3- (prefix) | S1 | S1 | X28 | S1 | |
| Type of bearings | Description | NTN | SKF | FAG | NSK | KOYO |
| Angular Contact Ball Bearings | angular contact spindle ball bearing with an angle15oC | c | & nbsp; | C | C | C |
| angular contact spindle ball bearing with 20oC contact angle | standard at HSE -series | & nbsp; | & nbsp; | & nbsp; | CA | |
| angular contact spindle ball bearing with 25oC contact angle | AD | AC | E | A5 | AC | |
| angular contact ball bearing with 30oC contact angle | A | A | & nbsp; | A | A | |
| angular contact ball bearing with a contact angle of 40oC | B | B | B | B | B | |
| single direction angular contact ball bearing for universal pairing | G | CA, CB, CC G | U | G | GS, GL, GM, GH | |
| angular contact ball bearing with steel cage | partly standard | & nbsp; | JP | & nbsp; | // | |
| Type of bearings | Description | NTN | SKF | FAG | NSK | KOYO |
| Cylindrical roller bearings | a cylindrical roller bearing with a clearance less than C2NA | C1NA | & nbsp; | & nbsp; | CC1 | C1NA |
| cylindrical roller bearing with a clearance less than NA | C2NA | & nbsp; | & nbsp; | CC2 | C2NA | |
| cylindrical roller bearing with standard clearance | NA | & nbsp; | & nbsp; | CC | CNNA | |
| cylindrical roller bearing with a clearance greater than NA | C3NA | & nbsp; | & nbsp; | CC3 | C3NA | |
| a cylindrical roller bearing with a clearance greater than C3NA | C4NA | & nbsp; | & nbsp; | CC4 | C4NA | |
| single row cylindrical roller bearing with optimized internal design and modified contact between the roller end and the rim | A | EC | E | & nbsp; | R | |
| full complement cylindrical roller bearing (no cage) | V | V | V | V | V | |
| Type of bearings | Description | NTN | SKF | FAG | NSK | KOYO |
| Spherical Roller Bearings | spherical roller bearing for higher rotational speeds, modified internal structure machined cage | B | & nbsp; | & nbsp; | & nbsp; | R |
| spherical roller bearing with improved barrel guiding design to carry higher loads | C | C / CC | & nbsp; | CD | RH | |
| spherical roller bearing with improved barrel guiding design to carry heavy loads | E | E | & nbsp; | & nbsp; | RHP | |
| spherical roller bearing adapted to work in vibrating machines | UA | VA405 | T41A | & nbsp; | ROVS | |
| Spherical Roller Bearing with Tightened Tolerance Outer Ring and Lubrication Groove | PX (n) | / W502 | & nbsp; | & nbsp; | W502 | |
| spherical roller bearing with a lubricating groove and three lubrication holes in the outer ring | D1 | / W33 | S | E4 | W33 | |
| spherical roller bearing with contact seal made of rubber (NBR) and steel plate reinforcement | WA - (prefix) | 2CS (2) | & nbsp; | & nbsp; | SR (prefix) | |
| Type of bearings | Description | NTN | SKF | FAG | NSK | KOYO |
| Tapered roller bearings | tapered roller bearing with changed limit dimensions to comply with ISO standards | U | X | X | J | J |
| tapered roller bearing with optimized internal constitution | CR - (prefix) | & nbsp; | A | HR (prefix) | R | |
| tapered roller bearing with 20o contact angle | not specified | & nbsp; | B | C | C | |
| tapered roller bearing with an operating angle of 28o 30 ' | not specificed | & nbsp; | & nbsp; | D | D | |
| tapered roller bearing with tolerances according to ISO class 6x | P6X | CLN | P6X | P6X | P6X | |
| a tapered roller bearing in an x-arrangement with a spacer ring between the outer rings | DF ... | & nbsp; | N11CA | & nbsp; | 45T (prefix) | |
| special tapered roller bearings proper due to friction and increased accuracy of rotation |
ST | CL7C | & nbsp; | & nbsp; | LFT |
