NJ306
Cylindrical Roller Bearing
NJ306
Cylindrical Roller Bearing
Single-row bearing with an NJ configuration, providing axial location in one direction and high radial stiffness. [Cylindrical Roller Bearings](https://www.nachi-bearings.de/media/crb_dimensions_web.pdf)
Price Match Promise
Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.
Single-row bearing with an NJ configuration, providing axial location in one direction and high radial stiffness. [Cylindrical Roller Bearings](https://www.nachi-bearings.de/media/crb_dimensions_web.pdf)
Price Match Promise
Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.
Technical Dimensions & Load Ratings
Confirm these values match your shaft, housing and application requirements before ordering.
Dimensions
| Bore Diameter (d) | 30mm |
| Outer Diameter (D) | 72mm |
| Width (B) | 19mm |
| Weight | 0.36kg |
Load & Speed Ratings
| Dynamic Load Rating (Cr) | 51kN |
| Static Load Rating (C0r) | 46.5kN |
| Reference Speed | 9500rpm |
Product Details
| Part Number | NJ306 |
| Brand | Nachi |
| Bearing Type | Cylindrical Roller Bearing |
| Seal Type | Open |
| Material | Chrome Steel |
| Stock Status | Extended Stock |
Technical Datasheet
Download full specifications for NJ306 — dimensions, load ratings, and material data.
Engineering support
Our experienced MRO products specialists are on hand to offer practical solutions to your problems and can assist with an on-site visit.
Call us01709 878282
Frequently Asked Questions
What is a NJ306 bearing?
The NJ306 is a Nachi Cylindrical Roller Bearing with a 30mm bore, 72mm outer diameter and 19mm width. It is Extended Stock at Buy Bearings.
What are the NJ306 dimensions?
The NJ306 measures 30mm bore (inner diameter) × 72mm outer diameter × 19mm width.
What does Open mean on a bearing?
Open bearings have no seals or shields, allowing maximum speed and easy relubrication — best for clean, lubricated environments.
Is the NJ306 in stock?
The NJ306 is Extended Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).
Related & Compatible Bearings
Same cylindrical roller bearing, closest dimensions first — useful if you need a slightly different size or this part is unavailable.
Related Parts — Seals & Bushings
Matching seals and bushings for 30mm shaft diameter — complementary components for your bearing.
