Yoke type track roller
Product Characteristics
- Yoke type track rollers manufactured and supplied by us include NART, NAST, NUTR, NK, NA49, SL and NJ.
- JMC yoke type track rollers are composed of inner ring, outer ring, two fastening rings tightly fixed to the inner ring, cage and needle or needle only.
- For NUTR, two additional fixing cores are added and only filling type is available.
- Most components including inner and outer ring, fixing ring and needle are made of high carbon chromium bearing steel.
- Sealant type prevents lubrication oil leakage and is very suitable for preventing foreign body.
- Grease is supplied through oil filling hole on the inner ring.
- Especially, NAST series are separable track rollers where each part may be separated and is being used extensively among industry.
Product Usage
- JMC yolk type track rollers are bearings suitable for enduring heavy load and are applied for guide rollers, rocker valve rollers, eccentric rollers and table supporting rollers.
- It is also utilized in a number of other applications including conversion of straight motion or rotating motion into axial motion since these bearings are easily obtained, easy to install, and low in price.
Notation indicating the Product Types
| NA49 | Needle roller bearing, mm sized, cage non-diversion type. |
|---|---|
| NART.. | yolk type track roller, mm sized. Standard of NART series manufactured by JMC is spherical outer ring. Therefore, NART..R with suffix “R” is the standard type. |
| NAST.. | Yolk type track roller, mm sized, Inner/outer ring cage diversion type. |
| NUTR.. | yolk type track roller, mm sized, filling type, double lined needles. For NUTR series manufactured by JMC, when it has spherical outer ring, its notation is NUTR..R and when it has cylindrical outer ring, its notation is NUTR..SL. Both are filling type. |
Notation indicating the Design Characteristics - Applied only for NART.. types
| V | Filling type, products without "V" are cage types. |
|---|---|
| UU | Contains two oil seals. |
| R | Spherical outer ring – applied only for NART, NUTR. |
| SL | Cylindrical outer ring – applied only for NUTR. |
Notation indicating the Design Characteristics - Applied only for NAST.. types
| ZZ | Two side planes. |
|---|---|
| UU | Contains two oil seals. |
| R | Spherical outer ring, products without "R" have cylindrical outer ring. |
Notation Example
